Re: [Discuss-gnuradio] rx_ofdm Does Not Work Past Synchronizer
A good way to test is to use the hier blocks for OFDM (you still need to reduce amplitude), they will set up everything in a way that will work for sure. See the loopback example in gr-digital/examples/ofdm. M On 03/19/2014 08:41 PM, Jonathan Fox wrote: Thanks for the responses. When I use the USRPs the UHD sink is placed after the OFDM Cyclic Prefixer, right after the Mutliply Const (50m). I haven't changed any settings because I remember reading in a few previous emails that the most common question people ask is Did you change anything? Sadly, the delay wasn't the case, at least for the loopback mode. I reduced the amplitude of the signal by an additional 0.02, so the multiply constant is at 0.03 as opposed to 0.05. It brought the clipping well within +1, -1. Before the signal clipped past -1 but never rose above +1. No effect but I am not ruling out that it wouldn't help. The video is interesting enough that I am going to continue watching after the first half, maybe I can figure out more from there. Jon On Wed, Mar 19, 2014 at 7:50 AM, Martin Braun martin.br...@ettus.com mailto:martin.br...@ettus.com wrote: On 03/19/2014 12:25 AM, Jonathan Fox wrote: So I have the stock python scripts (tx_ofdm and rx_ofdm) located in the gr-digital examples and put USRP sources and sinks in the appropriate spots. I left sampling alone (100K for TX, 3.2M for RX) and had the TX/RX frequency at 500 MHz. The USRPs used are N210s with WBX daughterboards. I tested the USRP used for TX out by outputting a signal to another and looking at it on the GNU Radio spectrum analyzer. Also, this is through SMA cables and a 30 dB attenuator, no over the air transmission. I placed file sinks after each block in the process; each file is a binary file. After multiple runs I felt like something wasn't working after looking at the binary files. Maybe you're probably screwing up your tx signal by clipping, although I can't say for sure from your flow graphs (where exactly do you put the UHD sink?) See http://video.fosdem.org/2014/AW1125/Sunday/Tutorial_OFDM_Packet_Transceivers.webm, starting around ~27 mins for an explanation, or search the mailing list archive. Martin When I execute, only the file sinks placed after the Schmidl Cox OFDM Synchronizer freq_offset and detect have data in them, at least their files have some size to them, implying something has been written. The file sinks after FFT (or the header/payload demux) have no data, 0 KB. When I discovered that the receive didn't work, I took the grc file another user made back in October with both TX mod and RX demod in the same flowgraph to see if that would work (files attached). Again same issue, all the binary files after the FFT have no data so something is getting screwed up in my demod. Has any user on this list run into this issue before or can offer some insight to why the receiver is failing? Thank you, Jon Attached is the python script, grc file, and screen shot of the TXRX combo in GRC. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org mailto:Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org mailto:Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] uhd_rx_cfile: getting constant O-overflows using the USRP B200 with debian
Hi Aditya, Thanks for your reply. Today I got the chance to measure the lower samplerates and here are the results: I measured the writingspeed on disk and the number of the Os for 1 minute runtime. Running X and iotop in the back has nearly no impact. MHz Mb/sO-count 32 310 350 16 180 107 8106 32 4 53 6 2 27 3 Do you have a hint for me for fixing this problem? regards, Ingmar Von: Aditya Dhananjay [mailto:adi...@cs.nyu.edu] Gesendet: Mittwoch, 19. März 2014 16:09 An: Ingmar Splitt Cc: discuss-gnuradio@gnu.org Betreff: Re: [Discuss-gnuradio] uhd_rx_cfile: getting constant O-overflows using the USRP B200 with debian Hello Ingmar, Can you please repeat the experiment with lower sampling rates (say, 10 Mhz)? Thanks. best, aditya On Wed, Mar 19, 2014 at 8:42 AM, Ingmar Splitt ingmar.spl...@eas.iis.fraunhofer.demailto:ingmar.spl...@eas.iis.fraunhofer.de wrote: Hi developers, I have a fresh gnu radio installed with pybombs for my usrp B200. It runs on a Lenovo X230 with debian testing x64. When I use uhd_rx_cfile i get constant O-overruns (output given below). The uhd-benchmark runs without problems: sudo ./benchmark_rate --duration 600 --rx_rate 3200 So the USB3-Port isn't the Problem. Storing in ram is also fine: sudo ./uhd_rx_cfile -f 244500 --samp-rate=3000 /tmp/test.cfile I use a Samsung Evo 840 1TB (newest firmware) and did the SSD-Optimizations (https://wiki.debian.org/SSDOptimization) while searching for the error. HDPerm-, DD- and copy-benchmarks give 500mb/s for the first seconds, later constant ~400mb/s writing speed. Debugging with iotop brings (output below) 90% io-call-workload for the benchmarks, but 0% for the uhd_rx_cfile which writes only with 240mb/s. So everything should work as expected. Btw: I also get overruns (at a lower rate) when sampling with lower sample rate and try to change the nice number. Have you got any idea how to find and fix the bottleneck? ## user@debian:~/tools/grc/target/bin$ sudo ./uhd_rx_cfile -f 244500 --samp-rate=3000 /test/test.cfile -v linux; GNU C++ version 4.8.2; Boost_105400; UHD_003.007.000-1-ga8caec5f -- Operating over USB 3. -- Initialize CODEC control... -- Initialize Radio control... -- Performing register loopback test... pass -- Performing CODEC loopback test... pass -- Asking for clock rate 32 MHz -- Actually got clock rate 32 MHz -- Performing timer loopback test... pass UHD Warning: The hardware does not support the requested RX sample rate: Target sample rate: 30.00 MSps Actual sample rate: 32.00 MSps Using mid-point gain of 36.5 ( 0.0 - 73.0 ) Motherboard: B200 (E6R04Z7B2) Daughterboard: B200 (RX2, A:A) Rx gain: 36.5 Rx baseband frequency: 2.445G Rx DDC frequency: -596.046m Rx Sample Rate: 32M Receiving samples until Ctrl-C Writing 32-bit complex floats Output filename: /test/test.cfile # iotop TID PRIO USER DISK READ DISK WRITE SWAPIN IOCOMMAND 171 be/4 root3.91 K/s0.00 B/s 0.00 % 6.63 % [kworker/u16:3] 2656 be/4 root0.00 B/s0.00 B/s 0.00 % 0.04 % X :0 -auth /var/run/lightdm~olisten tcp vt7 -novtswitch 3502 be/4 root0.00 B/s 236.78 M/s 0.00 % 0.00 % python2 ./uhd_rx_cfile -f 2~000 /test/test.cfile -v messung@debian:~/tools/grc/target/bin$ sudo hdparm -tT /dev/sda /dev/sda: Timing cached reads: 17832 MB in 2.00 seconds = 8921.71 MB/sec Timing buffered disk reads: 1526 MB in 3.00 seconds = 508.55 MB/sec ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.orgmailto:Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] VOLK - vector multiplication
Hi all, I am using ubuntu 13.04, GNUradio 3.7. I have a question related to VOLK library. When I create a vector, lets say: vectorgr_complex y1; Can I multiply this vector to another vector using VOLK? Is there any good documentation for this? -- NE___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] maxtrix inverse
Can we replace Eigen with VOLK in some extent? - NE Понедельник, 17 марта 2014, 11:50 +01:00 от Moritz Fischer moritz.fisc...@ettus.com: Hi BZS, Eigen is a pretty good library. Other's that might come to might is using blas/lapack in fortran or armadillo. I wouldn't expect too much of a speedup when compared to Eigen though. For examples on how to use fortran or armadillo with GNU Radio look at the gr-specest out of tree module. Cheers, Moritz On Mon, Mar 17, 2014 at 8:49 AM, 猪猪头 794226...@qq.com wrote: hi, when i deal data in my block,i want to scramble the positions symbol in a frame,and at receiver-end descramble these symbols,get correct the order,for this purpose,i need to compute the inverse of 64*64 matrix,and when i used the eigen library ,it works slowly wnen compare with the deal data speed of gnuradio,anyone could give me some other libraries or other methods to satify my need, thanks , BZS ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio -- NE ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] maxtrix inverse
Well you could implement your Matrix inversion using VOLK, of course. But to my knowledge you'd have to write the necessary kernels yourself. Cheers, Moritz On Thu, Mar 20, 2014 at 12:13 PM, Nasi nesaz...@mail.ru wrote: Can we replace Eigen with VOLK in some extent? - NE Понедельник, 17 марта 2014, 11:50 +01:00 от Moritz Fischer moritz.fisc...@ettus.com: Hi BZS, Eigen is a pretty good library. Other's that might come to might is using blas/lapack in fortran or armadillo. I wouldn't expect too much of a speedup when compared to Eigen though. For examples on how to use fortran or armadillo with GNU Radio look at the gr-specest out of tree module. Cheers, Moritz On Mon, Mar 17, 2014 at 8:49 AM, 猪猪头 794226...@qq.comhttps://e.mail.ru/compose?To=794226...@qq.com wrote: hi, when i deal data in my block,i want to scramble the positions symbol in a frame,and at receiver-end descramble these symbols,get correct the order,for this purpose,i need to compute the inverse of 64*64 matrix,and when i used the eigen library ,it works slowly wnen compare with the deal data speed of gnuradio,anyone could give me some other libraries or other methods to satify my need, thanks , BZS ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.orghttps://e.mail.ru/compose?To=discuss%2dgnura...@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.orghttps://e.mail.ru/compose?To=discuss%2dgnura...@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio -- NE ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] [GSoC] Proposal: Measurement Toolbox
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hello community, I've just pushed all changes to my GSoC proposal for a Measurement Toolbox. You can get the full PDF on https://github.com/marcusmueller/gsoc14-proposal/blob/master/gsoc14-proposal-mueller-announce.pdf?raw=true or of course access the repository on https://github.com/marcusmueller/gsoc14-proposal . To give you a short Introduction: The idea is that doing measurements and benchmarks of signal processing and computational performance is a day-to-day job for every developer and researcher, and yet there is no reasonable framework to do that reliably, distributed and reproducibly. I therefore proposed an extension to the brand new gr-benchmark tools, as well as a dispatcher architecture to let benchmarks run on different machines and minimize the total simulation time or run every benchmark on all machines to test things like VOLK performance. Overall, I try to achieve a shift from the purely algorithm-oriented benchmarking to more of an application performance benchmarking. Furthermore, I will integrate the tools into existing user interfaces (basically extending gnuradio-companion). I'm looking forward to storms of criticism ;) Greetings, Marcus -BEGIN PGP SIGNATURE- Version: GnuPG v1 Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJTKuoJEBQ6EdjyzlHtGysIALHn6/PW+HsTdLx7izRfHb+6 bHbWq0mq+h70RQZ8ythyeU4mak5oC33xwqE9FEixrnXRW5AMOmi0vRF91RnYrOi4 nzvYnfaBetjrVnLXJxq0cC9dxw9dq/vhvvZNv8CkNsidbjfIzGlmNX5yRhKTpGaW 1l4QozhxcYAl8uHWo4vU8/1fL62eOtNfGG18E7PyXDIrnvB1UbbGbjs+Qw5J+acJ gkV1iBgTfrE6lIxw32kMTqRnhK9Xu9r+HW/7IF7oXfNTc2fsdaN7CT1heHpevLLm j/A4d4jb1FqL88jWc6GRoa7q0C0agTIpn06BcvoDKXYfDQ92Mn29A2L7tKtXQXo= =ehHO -END PGP SIGNATURE- ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] GSoC: 2 Items
We have a great selection of GSoC'14 proposals coming in! Here are a couple quick reminders, primarily for GSoC students (but, everyone can benefit): 1) Please note that the deadline for submitting your proposal to Google Melange is Friday, March 21, 19:00 UTC. 2) If you update your proposal off-Melange only (e.g., you include a link in Melange and maybe some static text, neither of which needs updating when you change the proposal), please add a comment to your Melange proposal page as well so that we reviewers know (we'll receive an email with the update notice, as well as can sort proposals by last update time correctly). Posting to the GR discussion list is good for everyone, but it will help those of us doing for formal review -a lot- to have this new info on your Melange proposal page! Thanks! - MLD ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] uhd_rx_cfile: getting constant O-overflows using the USRP B200 with debian
Sorry, I do not. On Thu, Mar 20, 2014 at 6:23 AM, Ingmar Splitt ingmar.spl...@eas.iis.fraunhofer.de wrote: Hi Aditya, Thanks for your reply. Today I got the chance to measure the lower samplerates and here are the results: I measured the writingspeed on disk and the number of the Os for 1 minute runtime. Running X and iotop in the back has nearly no impact. MHz Mb/sO-count 32 310 350 16 180 107 8106 32 4 53 6 2 27 3 Do you have a hint for me for fixing this problem? regards, Ingmar *Von:* Aditya Dhananjay [mailto:adi...@cs.nyu.edu] *Gesendet:* Mittwoch, 19. März 2014 16:09 *An:* Ingmar Splitt *Cc:* discuss-gnuradio@gnu.org *Betreff:* Re: [Discuss-gnuradio] uhd_rx_cfile: getting constant O-overflows using the USRP B200 with debian Hello Ingmar, Can you please repeat the experiment with lower sampling rates (say, 10 Mhz)? Thanks. best, aditya On Wed, Mar 19, 2014 at 8:42 AM, Ingmar Splitt ingmar.spl...@eas.iis.fraunhofer.de wrote: Hi developers, I have a fresh gnu radio installed with pybombs for my usrp B200. It runs on a Lenovo X230 with debian testing x64. When I use uhd_rx_cfile i get constant O-overruns (output given below). The uhd-benchmark runs without problems: sudo ./benchmark_rate --duration 600 --rx_rate 3200 So the USB3-Port isn't the Problem. Storing in ram is also fine: sudo ./uhd_rx_cfile -f 244500 --samp-rate=3000 /tmp/test.cfile I use a Samsung Evo 840 1TB (newest firmware) and did the SSD-Optimizations (https://wiki.debian.org/SSDOptimization) while searching for the error. HDPerm-, DD- and copy-benchmarks give 500mb/s for the first seconds, later constant ~400mb/s writing speed. Debugging with iotop brings (output below) 90% io-call-workload for the benchmarks, but 0% for the uhd_rx_cfile which writes only with 240mb/s. So everything should work as expected. Btw: I also get overruns (at a lower rate) when sampling with lower sample rate and try to change the nice number. Have you got any idea how to find and fix the bottleneck? ## user@debian:~/tools/grc/target/bin$ sudo ./uhd_rx_cfile -f 244500 --samp-rate=3000 /test/test.cfile -v linux; GNU C++ version 4.8.2; Boost_105400; UHD_003.007.000-1-ga8caec5f -- Operating over USB 3. -- Initialize CODEC control... -- Initialize Radio control... -- Performing register loopback test... pass -- Performing CODEC loopback test... pass -- Asking for clock rate 32 MHz -- Actually got clock rate 32 MHz -- Performing timer loopback test... pass UHD Warning: The hardware does not support the requested RX sample rate: Target sample rate: 30.00 MSps Actual sample rate: 32.00 MSps Using mid-point gain of 36.5 ( 0.0 - 73.0 ) Motherboard: B200 (E6R04Z7B2) Daughterboard: B200 (RX2, A:A) Rx gain: 36.5 Rx baseband frequency: 2.445G Rx DDC frequency: -596.046m Rx Sample Rate: 32M Receiving samples until Ctrl-C Writing 32-bit complex floats Output filename: /test/test.cfile # iotop TID PRIO USER DISK READ DISK WRITE SWAPIN IOCOMMAND 171 be/4 root3.91 K/s0.00 B/s 0.00 % 6.63 % [kworker/u16:3] 2656 be/4 root0.00 B/s0.00 B/s 0.00 % 0.04 % X :0 -auth /var/run/lightdm~olisten tcp vt7 -novtswitch 3502 be/4 root0.00 B/s 236.78 M/s 0.00 % 0.00 % python2 ./uhd_rx_cfile -f 2~000 /test/test.cfile -v messung@debian:~/tools/grc/target/bin$ sudo hdparm -tT /dev/sda /dev/sda: Timing cached reads: 17832 MB in 2.00 seconds = 8921.71 MB/sec Timing buffered disk reads: 1526 MB in 3.00 seconds = 508.55 MB/sec ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] maxtrix inverse
On Thu, Mar 20, 2014 at 7:15 AM, Moritz Fischer moritz.fisc...@ettus.com wrote: Well you could implement your Matrix inversion using VOLK, of course. But to my knowledge you'd have to write the necessary kernels yourself. Cheers, Moritz No, but it would be nice to have a kernel for that. The caveat is that VOLK is really meant for and designed to work with vectors, not matrices. So you'd have to adapt the concept to work with the matrix as a long vector and provide the dimensions to the kernel. Tom On Thu, Mar 20, 2014 at 12:13 PM, Nasi nesaz...@mail.ru wrote: Can we replace Eigen with VOLK in some extent? - NE Понедельник, 17 марта 2014, 11:50 +01:00 от Moritz Fischer moritz.fisc...@ettus.com: Hi BZS, Eigen is a pretty good library. Other's that might come to might is using blas/lapack in fortran or armadillo. I wouldn't expect too much of a speedup when compared to Eigen though. For examples on how to use fortran or armadillo with GNU Radio look at the gr-specest out of tree module. Cheers, Moritz On Mon, Mar 17, 2014 at 8:49 AM, 猪猪头 794226...@qq.com wrote: hi, when i deal data in my block,i want to scramble the positions symbol in a frame,and at receiver-end descramble these symbols,get correct the order,for this purpose,i need to compute the inverse of 64*64 matrix,and when i used the eigen library ,it works slowly wnen compare with the deal data speed of gnuradio,anyone could give me some other libraries or other methods to satify my need, thanks , BZS ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio -- NE ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] VOLK - vector multiplication
On Thu, Mar 20, 2014 at 7:05 AM, Nasi nesaz...@mail.ru wrote: Hi all, I am using ubuntu 13.04, GNUradio 3.7. I have a question related to VOLK library. When I create a vector, lets say: vectorgr_complex y1; Can I multiply this vector to another vector using VOLK? Is there any good documentation for this? -- NE Myself and Nick McCarthy have published and presented on VOLK. Here's a pretty good overview video of using it: http://www.trondeau.com/blog/2013/6/12/nearly-50-minutes-of-volk.html To answer your question, yes, building a vector like that is acceptable for use with volk kernels as long as you are using the correct data types. Be aware of alignment requirements, though, which the link above explains. Tom ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] VOLK - vector multiplication
I had the same question. Thanks! :) On Thu, Mar 20, 2014 at 10:07 AM, Tom Rondeau t...@trondeau.com wrote: On Thu, Mar 20, 2014 at 7:05 AM, Nasi nesaz...@mail.ru wrote: Hi all, I am using ubuntu 13.04, GNUradio 3.7. I have a question related to VOLK library. When I create a vector, lets say: vectorgr_complex y1; Can I multiply this vector to another vector using VOLK? Is there any good documentation for this? -- NE Myself and Nick McCarthy have published and presented on VOLK. Here's a pretty good overview video of using it: http://www.trondeau.com/blog/2013/6/12/nearly-50-minutes-of-volk.html To answer your question, yes, building a vector like that is acceptable for use with volk kernels as long as you are using the correct data types. Be aware of alignment requirements, though, which the link above explains. Tom ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] [GSoC] Proposal for radar toolbox, Update
Hi! Thanks a lot for the feedback on the mailings list and on Google Melange! I have integrated your suggestions in the actual proposal on github [1]. Comments are still welcome! I left a note on the Melange page as well. Best regards Stefan W. [1] https://github.com/stwunsch/gsoc-proposal ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] VOLK - vector multiplication
On Thu, Mar 20, 2014 at 10:09 AM, Aditya Dhananjay adi...@cs.nyu.edu wrote: I had the same question. Thanks! :) One thing that I forgot to mention is that VOLK is written purely in C, so C++ vectors as-is won't work. You need to index them, but luckily, std::vector's are guaranteed to be contiguous in memory when indexed. In other words: std::vectorgr_complex x; volk_32fc_something_32fc(x[0], ...); Tom On Thu, Mar 20, 2014 at 10:07 AM, Tom Rondeau t...@trondeau.com wrote: On Thu, Mar 20, 2014 at 7:05 AM, Nasi nesaz...@mail.ru wrote: Hi all, I am using ubuntu 13.04, GNUradio 3.7. I have a question related to VOLK library. When I create a vector, lets say: vectorgr_complex y1; Can I multiply this vector to another vector using VOLK? Is there any good documentation for this? -- NE Myself and Nick McCarthy have published and presented on VOLK. Here's a pretty good overview video of using it: http://www.trondeau.com/blog/2013/6/12/nearly-50-minutes-of-volk.html To answer your question, yes, building a vector like that is acceptable for use with volk kernels as long as you are using the correct data types. Be aware of alignment requirements, though, which the link above explains. Tom ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] catching unrecognized exception
Dear gnuradioers,
I would like to ask againi if somebody can help me understand this:
thread[thread-per-block[0]: gr_block db_logger2 (62)]: caught
unrecognized exception
I have two blocks of db_logger type and it looks like only one catch this
unrecognized exception and another keeps working fine.
best and thank you
On Mon, Mar 3, 2014 at 12:55 PM, Nemanja Savic vlasi...@gmail.com wrote:
Hi all guys,
I have a block which is responsible to receive certain messages from other
blocks and to write the data from the message into database. Sometimes the
following exception occures and the block stops writing into database:
thread[thread-per-block[0]: gr_block db_logger2 (62)]: caught
unrecognized exception
The structure of the block is really simple:
def handle_msg(self, msg):
message = pmt.pmt_symbol_to_string(msg)
msg_lines = message.split('\n')
try:
sensor_id = msg_lines[0]
vendor = msg_lines[2]
sensor_type = msg_lines[3]
time = msg_lines[1]
#try:
querry = INSERT INTO `%s`.`%s` (`id` ,`sens_id` ,`vendor`,
`sensor_type`, `det_id`) VALUES (NULL , '%s', '%s', '%s','%s'); %
(self._db_name, self._det_table, sensor_id, vendor, sensor_type, self._id)
#print querry
cur = self._con.cursor()
cur.execute(querry)
except mdb.Error, e:
print Unexpected error while trying to insert into table
print msg_lines
print 50*'-'
print Error %d: %s % (e.args[0],e.args[1])
sys.exit(1)
Is there any way to track this problem and find the cause?
Best regards,
--
Nemanja Savić
--
Nemanja Savić
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Re: [Discuss-gnuradio] catching unrecognized exception
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Hi Nemanja,
your except syntax is wrong, most probably you wanted to use except
ExceptionType as e instead, refer to
http://docs.python.org/2/tutorial/errors.html
Anyway, have you tried surrounding all your handler code with a try
and catch not only the database related errors?
Greetings,
Marcus
On 20.03.2014 15:58, Nemanja Savic wrote:
Dear gnuradioers,
I would like to ask againi if somebody can help me understand
this: thread[thread-per-block[0]: gr_block db_logger2 (62)]:
caught unrecognized exception
I have two blocks of db_logger type and it looks like only one
catch this unrecognized exception and another keeps working fine.
best and thank you
On Mon, Mar 3, 2014 at 12:55 PM, Nemanja Savic vlasi...@gmail.com
wrote:
Hi all guys,
I have a block which is responsible to receive certain messages
from other blocks and to write the data from the message into
database. Sometimes the following exception occures and the block
stops writing into database:
thread[thread-per-block[0]: gr_block db_logger2 (62)]: caught
unrecognized exception
The structure of the block is really simple:
def handle_msg(self, msg): message =
pmt.pmt_symbol_to_string(msg) msg_lines = message.split('\n')
try: sensor_id = msg_lines[0] vendor = msg_lines[2] sensor_type =
msg_lines[3] time = msg_lines[1] #try: querry = INSERT INTO
`%s`.`%s` (`id` ,`sens_id` ,`vendor`, `sensor_type`, `det_id`)
VALUES (NULL , '%s', '%s', '%s','%s'); % (self._db_name,
self._det_table, sensor_id, vendor, sensor_type, self._id) #
print querry cur = self._con.cursor() cur.execute(querry) except
mdb.Error, e: print Unexpected error while trying to insert into
table print msg_lines print 50*'-' print Error %d: %s %
(e.args[0],e.args[1]) sys.exit(1)
Is there any way to track this problem and find the cause?
Best regards,
-- Nemanja Savić
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[Discuss-gnuradio] Measuring the Level of a Peak in a Signal
I imagine this is doable, but between experimenting and Google I have not been able to find a solution. The application is fairly simple- a FCD is connected to a QT GUI Sink. The FCD is tuned to the pilot frequency of a ATSC television channel. The attached image shows the resulting spectrum. The application is intended to assist in pointing an antenna to receive television broadcasts in a rural area. What I would like to do is measure the peak and display a number that represents its level. I have been able to average the entire signal but can't figure out how to measure the peak. Any advice would be appreciated. Thanks, George attachment: Screenshot.png___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] rx_ofdm Does Not Work Past Synchronizer
So I found the loopback script, tied the ends together with a multiply const block and was successful in modding and demodding that sinusoidal waveform. Added a UHD source and sink, success again. Then I split the process into two separate GRC files, a TX and a RX script. Everything works. I am extremely happy right now to see OFDM work. Thank you for the nudge in the right direction. So the next question I have is why I have success with the hierarchal blocks in the loopback script but not so much with rx_ofdm or that custom loopback I posted? Even with a binary file source with the modulated signal, that rx script won't work. I wouldn't say too terribly important but it is interesting to learn how OFDM works. But for what I am working on, those hierarchical blocks will suffice. Thanks again. Jon On Thu, Mar 20, 2014 at 5:05 AM, Martin Braun martin.br...@ettus.comwrote: A good way to test is to use the hier blocks for OFDM (you still need to reduce amplitude), they will set up everything in a way that will work for sure. See the loopback example in gr-digital/examples/ofdm. M On 03/19/2014 08:41 PM, Jonathan Fox wrote: Thanks for the responses. When I use the USRPs the UHD sink is placed after the OFDM Cyclic Prefixer, right after the Mutliply Const (50m). I haven't changed any settings because I remember reading in a few previous emails that the most common question people ask is Did you change anything? Sadly, the delay wasn't the case, at least for the loopback mode. I reduced the amplitude of the signal by an additional 0.02, so the multiply constant is at 0.03 as opposed to 0.05. It brought the clipping well within +1, -1. Before the signal clipped past -1 but never rose above +1. No effect but I am not ruling out that it wouldn't help. The video is interesting enough that I am going to continue watching after the first half, maybe I can figure out more from there. Jon On Wed, Mar 19, 2014 at 7:50 AM, Martin Braun martin.br...@ettus.com mailto:martin.br...@ettus.com wrote: On 03/19/2014 12:25 AM, Jonathan Fox wrote: So I have the stock python scripts (tx_ofdm and rx_ofdm) located in the gr-digital examples and put USRP sources and sinks in the appropriate spots. I left sampling alone (100K for TX, 3.2M for RX) and had the TX/RX frequency at 500 MHz. The USRPs used are N210s with WBX daughterboards. I tested the USRP used for TX out by outputting a signal to another and looking at it on the GNU Radio spectrum analyzer. Also, this is through SMA cables and a 30 dB attenuator, no over the air transmission. I placed file sinks after each block in the process; each file is a binary file. After multiple runs I felt like something wasn't working after looking at the binary files. Maybe you're probably screwing up your tx signal by clipping, although I can't say for sure from your flow graphs (where exactly do you put the UHD sink?) See http://video.fosdem.org/2014/AW1125/Sunday/Tutorial_OFDM_Packet_Transceivers.webm , starting around ~27 mins for an explanation, or search the mailing list archive. Martin When I execute, only the file sinks placed after the Schmidl Cox OFDM Synchronizer freq_offset and detect have data in them, at least their files have some size to them, implying something has been written. The file sinks after FFT (or the header/payload demux) have no data, 0 KB. When I discovered that the receive didn't work, I took the grc file another user made back in October with both TX mod and RX demod in the same flowgraph to see if that would work (files attached). Again same issue, all the binary files after the FFT have no data so something is getting screwed up in my demod. Has any user on this list run into this issue before or can offer some insight to why the receiver is failing? Thank you, Jon Attached is the python script, grc file, and screen shot of the TXRX combo in GRC. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org mailto:Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org mailto:Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org
[Discuss-gnuradio] [GSoC] proposal - VNA
Hello Everyone, I am a first year PHd student from TU Budapest. I would like to participate in the GSoC 2014 in the Vector network analyzer project. I have uploaded my proposel to a public repository. Any comments and suggestions are welcome! The link to my repository: https://github.com/horvlint/gsoc2014 Thank you in advance! Balint ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Measuring the Level of a Peak in a Signal
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hi George, practical implementation aside: Thanks to Parseval's theorem, looking at relative signal strength in frequency and time domain is equivalent. You can just use a number sink or time sink with a low pass filter to visualize the received signal power of the carrier. If you're feeling like doing things completely right, you can automatically fine tune to the carrier by using PLL carrier tracking ;) As for implementation: there is the max block. What you could do is: PLL - low pass - complex to mag² - integrate - stream to vector - max/argmax (depends on what you actually want to do) but that will not update your maximum during runtime but only find the maximum within a vector. However, implementing an always output the (abs)maximum float value block is really easy as a python block - in fact, doing that might be a great start into developing GNU Radio blocks. Doing it somewhat optimized might need some thought, though ;) Greetings, Marcus PS: please make sure not to respond to previous posts when bringing up a new topic; otherwise, your post will appear in that thread and is more likely to be ignored. On 20.03.2014 16:05, George S. Williams wrote: I imagine this is doable, but between experimenting and Google I have not been able to find a solution. The application is fairly simple- a FCD is connected to a QT GUI Sink. The FCD is tuned to the pilot frequency of a ATSC television channel. The attached image shows the resulting spectrum. The application is intended to assist in pointing an antenna to receive television broadcasts in a rural area. What I would like to do is measure the peak and display a number that represents its level. I have been able to average the entire signal but can't figure out how to measure the peak. Any advice would be appreciated. Thanks, George ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio -BEGIN PGP SIGNATURE- Version: GnuPG v1 Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJTKxeHAAoJEBQ6EdjyzlHtYBgIALINVGpZDTQ962aMmNQfCiNm hePnKufnAgC6qL2PWgbnh6CaoIAgx2PF6O4RQlE+fO/qepves6KR5RG5zu5AnIqJ QEmBWlkxXn8GawBi27XDKc5X3hECUZzNVDrvXixePolYh/sCgQZdyYksWLEQ10fV nVCSvXVtXyEtNZqeabNGwk0xcaeiV85POuHm2j6QWOOGKjvUUCE3za33e0id7ras 9ykXyph1Nd/3r1Hoj+su9GiKKaWYwRLU/TJGdSpxhiUPk+XxHJEg1BkUyDX1MCFk KRaxadKjtJ5kFP/MhZXTqjY4trsS2aMviiwwNKVgD0iLUocOjJyDkTmuly6N8Ks= =ma6/ -END PGP SIGNATURE- ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] VOLK - vector multiplication
Thanks! As I see you apply it to the first element of x as in volk_32fc_something_32fc(x[0], ...);. I want to multiply the whole vector like as a inner product of two vectors. Is it possible? - NE Четверг, 20 марта 2014, 10:28 -04:00 от Tom Rondeau t...@trondeau.com: On Thu, Mar 20, 2014 at 10:09 AM, Aditya Dhananjay adi...@cs.nyu.edu wrote: I had the same question. Thanks! :) One thing that I forgot to mention is that VOLK is written purely in C, so C++ vectors as-is won't work. You need to index them, but luckily, std::vector's are guaranteed to be contiguous in memory when indexed. In other words: std::vectorgr_complex x; volk_32fc_something_32fc(x[0], ...); Tom On Thu, Mar 20, 2014 at 10:07 AM, Tom Rondeau t...@trondeau.com wrote: On Thu, Mar 20, 2014 at 7:05 AM, Nasi nesaz...@mail.ru wrote: Hi all, I am using ubuntu 13.04, GNUradio 3.7. I have a question related to VOLK library. When I create a vector, lets say: vectorgr_complex y1; Can I multiply this vector to another vector using VOLK? Is there any good documentation for this? -- NE Myself and Nick McCarthy have published and presented on VOLK. Here's a pretty good overview video of using it: http://www.trondeau.com/blog/2013/6/12/nearly-50-minutes-of-volk.html To answer your question, yes, building a vector like that is acceptable for use with volk kernels as long as you are using the correct data types. Be aware of alignment requirements, though, which the link above explains. Tom ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio -- NE ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] VOLK - vector multiplication
On Thu, Mar 20, 2014 at 12:51 PM, Nasi nesaz...@mail.ru wrote: Thanks! As I see you apply it to the first element of x as in volk_32fc_something_32fc(x[0], ...);. I want to multiply the whole vector like as a inner product of two vectors. Is it possible? - NE Not sure I exactly follow your comment, but you can do something like this: int N; vectorgr_complex x(N); vectorgr_complex y(N); vectorgr_complex z(N); // fill x and y with stuff volk_32fc_x2_dot_prod_32fc(z[0], x[0], y[0], N); That will take the dot product of x and y and put the results in z. Tom Четверг, 20 марта 2014, 10:28 -04:00 от Tom Rondeau t...@trondeau.com: On Thu, Mar 20, 2014 at 10:09 AM, Aditya Dhananjay adi...@cs.nyu.edu wrote: I had the same question. Thanks! :) One thing that I forgot to mention is that VOLK is written purely in C, so C++ vectors as-is won't work. You need to index them, but luckily, std::vector's are guaranteed to be contiguous in memory when indexed. In other words: std::vectorgr_complex x; volk_32fc_something_32fc(x[0], ...); Tom On Thu, Mar 20, 2014 at 10:07 AM, Tom Rondeau t...@trondeau.com wrote: On Thu, Mar 20, 2014 at 7:05 AM, Nasi nesaz...@mail.ru wrote: Hi all, I am using ubuntu 13.04, GNUradio 3.7. I have a question related to VOLK library. When I create a vector, lets say: vectorgr_complex y1; Can I multiply this vector to another vector using VOLK? Is there any good documentation for this? -- NE Myself and Nick McCarthy have published and presented on VOLK. Here's a pretty good overview video of using it: http://www.trondeau.com/blog/2013/6/12/nearly-50-minutes-of-volk.html To answer your question, yes, building a vector like that is acceptable for use with volk kernels as long as you are using the correct data types. Be aware of alignment requirements, though, which the link above explains. Tom ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio -- NE ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] Draft Proposal for MIMO Transceiver
Hello, Below is the link for my proposal for GSoC 14. http://www.google-melange.com/gsoc/proposal/review/student/google/gsoc2014/kunalsankhe/5629499534213120 Please let me know your feedback on this. Thanks and regards, Kunal Sankhe ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] No Dev Call this March
Hi everyone, Sorry for the short notice, but there will be no Dev Call today. With the hackfest, WSR and the recent release, we've been discussing a lot of things all the time, and don't really have important stuff lined up for this call. Cheers, Martin ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] VOLK - vector multiplication
I've got this error: /tmp/ccE79VRG.o: In function `main': t2_rx_ompalg.cc:(.text+0x6a5): undefined reference to `volk_32fc_x2_dot_prod_32fc' collect2: error: ld returned 1 exit status I was running it inside main function as g++ -std=c++11 t2_rx_ompalg.cc -o t2_rx_ompalg -lm -lfftw3 Do you know what is it for? - NE Thu, 20 Mar 2014 13:04:02 -0400 от Tom Rondeau t...@trondeau.com: On Thu, Mar 20, 2014 at 12:51 PM, Nasi nesaz...@mail.ru wrote: Thanks! As I see you apply it to the first element of x as in volk_32fc_something_32fc(x[0], ...);. I want to multiply the whole vector like as a inner product of two vectors. Is it possible? - NE Not sure I exactly follow your comment, but you can do something like this: int N; vectorgr_complex x(N); vectorgr_complex y(N); vectorgr_complex z(N); // fill x and y with stuff volk_32fc_x2_dot_prod_32fc(z[0], x[0], y[0], N); That will take the dot product of x and y and put the results in z. Tom Четверг, 20 марта 2014, 10:28 -04:00 от Tom Rondeau t...@trondeau.com : On Thu, Mar 20, 2014 at 10:09 AM, Aditya Dhananjay adi...@cs.nyu.edu wrote: I had the same question. Thanks! :) One thing that I forgot to mention is that VOLK is written purely in C, so C++ vectors as-is won't work. You need to index them, but luckily, std::vector's are guaranteed to be contiguous in memory when indexed. In other words: std::vectorgr_complex x; volk_32fc_something_32fc(x[0], ...); Tom On Thu, Mar 20, 2014 at 10:07 AM, Tom Rondeau t...@trondeau.com wrote: On Thu, Mar 20, 2014 at 7:05 AM, Nasi nesaz...@mail.ru wrote: Hi all, I am using ubuntu 13.04, GNUradio 3.7. I have a question related to VOLK library. When I create a vector, lets say: vectorgr_complex y1; Can I multiply this vector to another vector using VOLK? Is there any good documentation for this? -- NE Myself and Nick McCarthy have published and presented on VOLK. Here's a pretty good overview video of using it: http://www.trondeau.com/blog/2013/6/12/nearly-50-minutes-of-volk.html To answer your question, yes, building a vector like that is acceptable for use with volk kernels as long as you are using the correct data types. Be aware of alignment requirements, though, which the link above explains. Tom ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio -- NE -- NE ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] rx_ofdm Does Not Work Past Synchronizer
On 03/20/2014 05:14 PM, Jonathan Fox wrote: So I found the loopback script, tied the ends together with a multiply const block and was successful in modding and demodding that sinusoidal waveform. Added a UHD source and sink, success again. Then I split the process into two separate GRC files, a TX and a RX script. Everything works. I am extremely happy right now to see OFDM work. Thank you for the nudge in the right direction. So the next question I have is why I have success with the hierarchal blocks in the loopback script but not so much with rx_ofdm or that custom loopback I posted? Even with a binary file source with the modulated signal, that rx script won't work. I wouldn't say too terribly important but it is interesting to learn how OFDM works. But for what I am working on, those hierarchical blocks will suffice. Well, it's hard to say from a distance, but you could check the output on the header path after the header/payload demuxer to see what's going on. M ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] VOLK - vector multiplication
On 03/20/2014 07:16 PM, Nasi wrote: I've got this error: /tmp/ccE79VRG.o: In function `main': t2_rx_ompalg.cc:(.text+0x6a5): undefined reference to `volk_32fc_x2_dot_prod_32fc' collect2: error: ld returned 1 exit status I was running it inside main function as g++ -std=c++11 t2_rx_ompalg.cc -o t2_rx_ompalg -lm -lfftw3 You need to link to VOLK, too. M ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] UHD blocks
My friend has installed GNU Radio from this link http://blogs.bu.edu/mhirsch/2012/07/installing-gnu-radio-in-ubuntu-12-04-x64/comment-page-1/ Then when running GNURadio , she found UHD blocks in it . 1- Does this mean that this link has installed GNURadio UHD on Ubuntu , and that there is no need to install UHD ? 2- Is there any command that she can run in terminal to check if UHD is installed? Thanks ! :) ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] UHD blocks
On 03/20/2014 03:56 PM, Sara Chérif wrote: My friend has installed GNU Radio from this link http://blogs.bu.edu/mhirsch/2012/07/installing-gnu-radio-in-ubuntu-12-04-x64/comment-page-1/ Then when running GNURadio , she found UHD blocks in it . 1- Does this mean that this link has installed GNURadio UHD on Ubuntu , and that there is no need to install UHD ? 2- Is there any command that she can run in terminal to check if UHD is installed? Thanks ! :) ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio Try uhd_usrp_probe -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] UHD blocks
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hi Sara, although that guide is correct (it just uses the popular and well-working build-gnuradio script), I'm always a little surprised where people find information. For later reference: The official GNU Radio website is http://gnuradio.org/ and the official installation instructions can be found under http://gnuradio.org/redmine/projects/gnuradio/wiki/InstallingGR . Your friend did a source build, which is nice, because she now has the most current version of GNU Radio :-) . UHD comes with a lot of tools, starting with uhd_. So typing uhd_ and then tab should show you a lot of programs, for example uhd_find_devices . To find out if UHD is actually working in GNU Radio, just open the gnuradio-companion, use the search tool (magnifier logo) and search for uhd. Greetings, Marcus On 20.03.2014 20:56, Sara Chérif wrote: My friend has installed GNU Radio from this link http://blogs.bu.edu/mhirsch/2012/07/installing-gnu-radio-in-ubuntu-12-04-x64/comment-page-1/ Then when running GNURadio , she found UHD blocks in it . 1- Does this mean that this link has installed GNURadio UHD on Ubuntu , and that there is no need to install UHD ? 2- Is there any command that she can run in terminal to check if UHD is installed? Thanks ! :) ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio -BEGIN PGP SIGNATURE- Version: GnuPG v1 Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJTK0pPAAoJEBQ6EdjyzlHtBNgH/0BIAwIMd8Q9iusjb2hbc/A9 sxCyrVgnRvUQhTeNytW7bXScuccMQ/CMWE+0PGhaOu2X5640sQuPbJVh/sJJAKk9 XzOksIucm1MaKwILrBv16hgI7qKOV7P9aFhF+K9UpSuPj8h+WmfdLK1tauCl69hE cim1Rwfp4mnXUaA6IJ7HXX/E886lPAl3j/wqEWL8m/wT3khCU7muP7T3btZnXv7e jryZ6g/ytnSAJLqI2p+bYyVBqreaVFiG756EvrHbgE0RAqoJsecxF87VozeRcNyz FzjZ2kxpmW0Lin704CTGful+Cc5WoCyYZ/aUCY36p/ovhGsDnuLOTylTOenm4rM= =9Ty0 -END PGP SIGNATURE- ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] Update to GSoC Poposal, Signal Analysis and Visualization Tool
I got some good comments and feedback on my GSoC proposal. I updated it and it is available here: https://docs.google.com/document/d/1D4L2mfbuubQiiPQimguDsTGT_SVz831eUa3NVN8Kvqg/edit?usp=sharing Thanks, Dean ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
