Re: v3.7 End of Maintenance

Glen, If SDRPlay doesn't support newer versions of GR then the problem is SDRPlay (a for-profit company that you gave money to) and their drivers (which I believe are proprietary?), not the free software involved. In any case, GR 3.7 will be available forever and nobody can take that away from

Re: [Discuss-gnuradio] Probable pulsar observing success at CCERA

That's awesome work! Thanks for sharing it. How much bandwidth are you observing and did you also use de-dispersion? Matt On Thu, Dec 1, 2016 at 10:45 AM, Marcus D. Leech wrote: > One of the many goals we set for ourselves at the Canadian Centre for > Experimental Radio

Re: [Discuss-gnuradio] Interleaved sampling without interleaved clocks?

Lou, Many high-speed data converters actually interleave samples from multiple lower speed ADCs. They delay clock, rather than the signal, which is much easier. Even then, unless the delay is perfect, you get really bad spurs. Mismatches in delay on the order of 100 fs can be a big problem. So

Re: [Discuss-gnuradio] Renaming PyBOMBS

On Tue, Dec 22, 2015 at 12:31 PM, Richard Bell wrote: > GRAB = Gnu RAdio Basic installer > > Then we can say things like "Go GRAB it" when referring to a needed module > +1. Short, not used by any other project, pronounceable. It could also stand for GNU Radio

Re: [Discuss-gnuradio] Gradual loss of amplitude as flowgraph runs

Take a look at the phase rotator in the frequency translating FIR filter. Is it done with sine/cos lookups or is it a rotating phasor? Rotating phasors can lose amplitude due to finite precision effects. Matt On Fri, Aug 14, 2015 at 1:57 PM, John Ackermann N8UR j...@febo.com wrote: Still

Re: [Discuss-gnuradio] Optimum decimation for maximizing dynamic range

Yes, you are thinking about it correctly. You should decimate as little as possible in hardware, and do the rest in software in floating point. Matt On Thu, Jul 16, 2015 at 10:44 AM, madengr rfeng...@me.com wrote: Is there an optimum hardware decimation to maximize receiver dynamic range?

Re: [Discuss-gnuradio] Most affordable UHD compatible SW transmitter

B200 is the lowest cost. On Jun 1, 2015 9:24 AM, Rafael Diniz raf...@riseup.net wrote: Hi people, Do you know which is the current state of art regarding (low) price of SW SDR transmitter compatible with UHD? It's for a project for Digital Radio broadcast using DRM standard (10kHz of

[Discuss-gnuradio] Getting together in Korea to talk SDR

USRPs and RFNoC to a group at your university, club, or company. Please contact me off list if you'd be interested in getting together! This is my first time in Korea, and I am excited to be going. Thanks, Matt Ettus ___ Discuss-gnuradio mailing list

Re: [Discuss-gnuradio] How to control latency

Daniele, GNU Radio tries to maximize the size of the chunks of data it deals with. Clearly that works well for high rate data, but not low rate data. There are some handles to control buffer sizes and things within GNU Radio, but you may have better luck just using a much higher sample rate. If

Re: [Discuss-gnuradio] Difference between USRP RIO and Ettus USRP X310

Jay, The USRP RIO is an X310 with 2 daughterboards included. That covers part of the price difference. The USRP RIO also includes some LabVIEW software and local support from NI people in your country. If you intend to use GNU Radio, you are probably better off getting the Ettus Research

[Discuss-gnuradio] RFNoC -- Making FPGA design easy from GNU Radio

-users mailing list. Matt Ettus President, Ettus Research ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

Re: [Discuss-gnuradio] FFT scaling consistency

I normalized the wx complex display a long time ago. As you have discovered, windowing affects this, but in two separate ways. First, windowing reduces total signal power because most bins are less than 1. We normalize for that, so the total energy remains constant. You will see that if you

Re: [Discuss-gnuradio] High Flowgraph Latency in 3.6.4.1

We see this issue a lot with applications that only transmit, and which transmit continuously. The problem is that you end up generating samples far in advance of when you really know what you want to transmit, because there is no rate-limiting on the production side. Some general principles --

Re: [Discuss-gnuradio] High Flowgraph Latency in 3.6.4.1

the email above - it turned out that buffer sizes were not an issue. Something else was weird was happening - see (2) on my prev email if you're interested. Thanks for following up on this thread. -John On Fri, Oct 17, 2014 at 10:16 AM, Matt Ettus m...@ettus.com wrote: We see this issue a lot

Re: [Discuss-gnuradio] Source Block - Flow Control

burst? if so that seems straightforward. I can just mux some zeros in. Also should the padding be included in the burst length? Original message From: Matt Ettus Date:2014/10/16 22:54 (GMT+00:00) To: David Halls Cc: John Malsbury ,GNURadio Subject: Re: [Discuss

Re: [Discuss-gnuradio] Source Block - Flow Control

On Thu, Oct 16, 2014 at 8:40 AM, John Malsbury jmalsbury.perso...@gmail.com wrote: I'm happy this is working for you, David. So do I understand correctly, that the adding tx_time finally made the MIMO case work? I'd never done burst transmission with multiple USRP outputs. I'm not totally

Re: [Discuss-gnuradio] Source Block - Flow Control

gives physical devices like antenna switches to settle. Matt On Thu, Oct 16, 2014 at 2:46 PM, David Halls david.ha...@toshiba-trel.com wrote: Original message From: Matt Ettus Date:2014/10/16 22:42 (GMT+00:00) To: John Malsbury Cc: David Halls ,GNURadio Subject: Re

Re: [Discuss-gnuradio] Source Block - Flow Control

Jeff, If there is a hardware device like a USRP in the chain, then you should not use a throttle block. What you are seeing is the initial startup burst. When everything starts up, all the buffers are empty, and GNU Radio will generate data until something backs up. Once they fill up, you are

Re: [Discuss-gnuradio] Source Block - Flow Control

, David Halls david.ha...@toshiba-trel.com wrote: Matt, In my source block I can limit the calls to the DB ok, but I will still need to output something from the block, won't I? This will then propagate and fill the buffers? Thanks, David Original message From: Matt

Re: [Discuss-gnuradio] Arbitrary ADC resolution at the receiver

The n200 and n210 have 14 bit ADCs. In any case, you can fake fewer bits by zeroing the low order bits in the fpga. Matt On Jun 30, 2014 10:38 AM, Leonardo S. Cardoso leo...@gmail.com wrote: Hello everyone, I excuse myself on advance by my noob question... I have an N210 with an SBX front

Re: [Discuss-gnuradio] Phase unwrapping

Daniele, The problem with phase unwrapping is that it is unbounded, and will tend to infinity. Once it gets very big, when you try to add a small number to a very big number, floating point loses precision. Eventually, adding small to extremely big returns the big number unchanged. This isn't

[Discuss-gnuradio] GNU Radio discussion in Poland

I'm going to be in Krakow on Friday and Saturday. If anyone is interested in getting together to discuss USRPs or GNU Radio over food and/or drinks, send me an email. I'm also giving a talk on Friday morning at AGH in Krakow in building D6 room 201 at 9:30 if you'd like to hear about some

Re: [Discuss-gnuradio] (no subject)

Full duplex implies simultaneous transmission and reception, almost always on different frequencies. In the cellular world this is called frequency division duplexing, or FDD. Full duplex on a USRP implies transmitting on one connector (TX/RX) and receiving on the other (RX2). Half duplex means

Re: [Discuss-gnuradio] regd: IIP3 and OIP3 measurements for USRPN210

Gayathri, You can find IIP2, IIP3, and NF data for the N210 with WBX (on the receive side) here: http://files.ettus.com/performance_data/wbx/wbx_imd_and_nf_vs_gain.pdf Please let me know if you have any questions about the data. Thanks, Matt On Wed, Apr 16, 2014 at 10:22 AM, Gayathri

Re: [Discuss-gnuradio] X300 PCIe issues

You are using ubuntu 14.4 which has a new kernel. It will take us a little while to get our kernel module working with it. In the mean time, going to an older kernel or distribution will fix it. This does not affect ethernet connections. Matt On Apr 25, 2014 11:38 PM, Robert McGwier

Re: [Discuss-gnuradio] Reference Clock power level for Ettus N210

We posted those numbers because they are the numbers we know will work reliably. -15dBm is unlikely to work well, but you won't damage anything by trying. Matt On Wed, Apr 23, 2014 at 3:43 PM, Antonio Petrolino apetrol...@mbigroup.itwrote: Thank you Marcus, I will wait for some answers from

Re: [Discuss-gnuradio] Terminology Translation

The most straightforward way is to use a normal FIR filter with all taps set to 1. This is not terribly efficient, but will get you what you want. Matt On Mon, Apr 7, 2014 at 8:37 AM, Ed Criscuolo edward.l.criscu...@nasa.govwrote: Being more of an implementer than a mathematical theorist,

Re: [Discuss-gnuradio] Transmit from RF1, receive from RF2

Which daughterboard are you using? The only ones where you can receive 2 signals at once are BasicRX, LFRX, and TVRX2. The others only allow you to receive from one antenna port at a time. Matt On Mon, Mar 10, 2014 at 3:54 PM, Dimitris Siafarikas jimsia...@hotmail.comwrote: Hi list,

Re: [Discuss-gnuradio] Bypassing CIC and half-band filter on N2x0

You could only do that by modifying the FPGA. It would be a very minor mod, though. Hook up the undecimated ADC values to where the output of the decimators go, and leave everything else intact. Then just set the decimators as normal and you will get the rate you request. Matt On Tue, Feb

Re: [Discuss-gnuradio] Idea of a USRP UHD block that fills gaps in transmission from USRP

Piotr, One problem is that if you cannot keep up, adding in all-zeros data will just make it harder to keep up. In general, modern PCs should be able to keep up with 25 MS/s without problem unless you are doing a lot of processing. We are actually able to keep up with 300 MS/s on the X300. So

Re: [Discuss-gnuradio] is the USRP-hw still available now?

The .pcb files for rfx were created with PADS. Matt On Wed, Dec 18, 2013 at 7:41 PM, 王永刚 n...@vip.qq.com wrote: hi,everyone: as i am new to RF pcb layout , i want the USRP daughter board PCB file to reference,i found a floder at /root/usrp-hw(

Re: [Discuss-gnuradio] [USRP-users] USRP N210 Signal Phase Issue

Try reducing the amplitude to 0.7. Another possibility is that your computer can't keep up. If you are using one of the standard programs, are there U's printing in the terminal? Matt On Tue, Jan 7, 2014 at 3:03 PM, Jonathan Fox 31...@cardinalmail.cua.eduwrote: A colleague and I are sending

Re: [Discuss-gnuradio] [USRP-users] USRP N210 Signal Phase Issue

It could be the usrp digitally clipping, not the analyzer. Matt On Tue, Jan 7, 2014 at 5:17 PM, Jonathan Fox 31...@cardinalmail.cua.eduwrote: On Tue, Jan 7, 2014 at 7:11 PM, Marcus D. Leech mle...@ripnet.com wrote: Try reducing the amplitude to 0.7. Another possibility is that your

Re: [Discuss-gnuradio] FFT -- IFFT

The purpose of a window is to lower bin-to-bin leakage. It is only useful when the FFT is the final product, since it changes the signal. Think of it this way -- you are multiplying a signal in the time domain when you window. If you window, then FFT, then IFFT, you will get back the windowed

Re: [Discuss-gnuradio] R: R: Re: R: R: Re: around empty subcarrier in 802.11n implementation

Thanks for the update! I know that getting the exact right bins in the right place can be hard since every FFT inplementation is slightly different. Matt On Mon, Oct 14, 2013 at 8:43 AM, xe...@libero.it xe...@libero.it wrote: Hi guys, just for letting you know. No offset correction is

Re: [Discuss-gnuradio] [USRP-users] USRP N210 Rev 4.0 generation/architecture

Yes to both questions. Matt On Sun, Sep 1, 2013 at 10:28 PM, Sam mite mite.eng...@gmail.com wrote: Does USRP N210 Rev 4.0 belongs to 2nd generation USRP architecture? Does the picture attached rightly depicts the USRP N210 Rev 4.0 architecture? -- Sam

Re: [Discuss-gnuradio] LFRX as IF stage questions

The LFRX has 2 inputs. For your application you only need to use one of them, since you have a real IF and not complex IQ baseband. The signal will then be downconverted from 10 MHz by the DDCs, and you will have a complex baseband signal. The LFRX has a clock output pin. You will need to

Re: [Discuss-gnuradio] LFRX as IF stage questions

I just realized the LFRX does not have the clock pin. The BasicRX does, and should also work the same way for your application. So if you need the clock output, the BasicRX is a better choice. Matt On Wed, Aug 14, 2013 at 7:25 AM, Matt Ettus m...@ettus.com wrote: The LFRX has 2 inputs

Re: [Discuss-gnuradio] See a demo of our new USRP as DEFCON

Yes, it will fall back to USB 2.0, which reduces the bandwidth. Matt On Fri, Aug 2, 2013 at 12:07 PM, Tom Rondeau t...@trondeau.com wrote: On Thu, Aug 1, 2013 at 8:10 PM, Matt Ettus m...@ettus.com wrote: For those lucky enough to be going to DEFCON, Balint Seeber (our applications

[Discuss-gnuradio] See a demo of our new USRP as DEFCON

For those lucky enough to be going to DEFCON, Balint Seeber (our applications engineer) will be presenting All Your RFz Are Belong to Me -- Hacking the Wireless World with SDR, in Track 4 from 10 AM to 11:45. He will be running all of his demos on the USRP B200, which we are going to release very

Re: [Discuss-gnuradio] 802.22 implementation on Gnu Radio?

I don't know of any 802.22 implementations at all, on GNU Radio or otherwise. Are people still working on 802.22? Matt On Tue, Jun 11, 2013 at 3:57 AM, M. Ranganathan mra...@gmail.com wrote: Hello! I am wondering if there are any implementations of 802.22 on GR. Any pointers would be

Re: [Discuss-gnuradio] [USRP-users] How to Travel Commercial Airlines with USRP

These days you will have more trouble with a screwdriver than with the usrp. We fly with them all the time. Matt On Jun 9, 2013 12:27 PM, Bruce Penswick brucepensw...@yahoo.com wrote: Hello: Quick question: I'm flying commercial for a work-trip, American Airlines from Los Angeles to

Re: [Discuss-gnuradio] Question about UHD driver

There is no need to create multiple copies. The consuming blocks are each given a pointer to the same data, and the memory is not freed until all the consuming blocks indicate they are done with it. Matt On Thu, May 16, 2013 at 11:00 AM, Mark McCarron mark.mccar...@live.co.ukwrote: I am

Re: [Discuss-gnuradio] Question about UHD driver

Are you saying that it is better to always make copies of the data rather than just make copies when you need them? In any case, I think you misunderstand both how GNU Radio works and how UHD interacts with it. UHD provides a single copy of data to GNU Radio for two reasons -- first, that is

[Discuss-gnuradio] GNU Radio in Brazil

Hi everyone. I'm traveling in Sao Paulo this week for NI Days Brasil ( http://brasil.ni.com/nidays ), and I have some free time. If you would like to get together to talk about GNU Radio and USRPs, what is coming from Ettus Research, or anything else SDR, send me an email. If you have a group

Re: [Discuss-gnuradio] Any one know rfx board i q imbalance value

The imbalance will vary board to board, which is why we provide the ability to calibrate the IQ balance. Running the calibration utility will get you the best performance. Matt On Fri, Mar 8, 2013 at 5:54 PM, James Jordan james.jordan@gmail.comwrote: Hi list, Anyone know rfx board i q

Re: [Discuss-gnuradio] OFDM - real RF output vs. expected output

You are probably using an odd interpolation ratio. You need to use an even rate in order to get a flat passband. The WBX does not have adjustable filtering. Matt On Wed, Feb 13, 2013 at 10:42 PM, Ralph A. Schmid, dk5ras ra...@schmid.xxxwrote: Hi, I use an USRP1 together with gnuradio/GRC

Re: [Discuss-gnuradio] Unknown cause of Latency with USRP

What is the bit rate of the source and what is the bit rate of the data transmission? Matt On Wed, Jan 23, 2013 at 10:32 AM, Tom Hendrick sdtom...@yahoo.com wrote: Hello Josh, The transmitter sends data when there is enough to fill a packet. The packets are flushed about every 200msec

Re: [Discuss-gnuradio] Unknown cause of Latency with USRP

kHz and the GRC scripts resample at 1 MHz so the USRP is run at 1MS/s rates. Thank you, Tom -- *From:* Matt Ettus m...@ettus.com *To:* Tom Hendrick sdtom...@yahoo.com *Cc:* j...@ettus.com j...@ettus.com; discuss-gnuradio@gnu.org discuss-gnuradio@gnu.org *Sent

[Discuss-gnuradio] DARPA Spectrum Challenge

truly believe this contest is one of the most exciting recent developments in SDR, and I hope there will be a lot of participation from members of the list. Matt Ettus ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman

Re: [Discuss-gnuradio] DARPA Spectrum Challege

On Sun, Jan 13, 2013 at 2:10 PM, Martin Braun (CEL) martin.br...@kit.eduwrote: On Sun, Jan 13, 2013 at 01:50:34PM -0500, Tom Rondeau wrote: I really hope a lot of you on this mailing list look into participating in the competition! But note that you have to enter by the end of January.

Re: [Discuss-gnuradio] DARPA Spectrum Challege

Sorry, I meant find, not fund Matt On Sun, Jan 13, 2013 at 3:32 PM, Matt Ettus m...@ettus.com wrote: On Sun, Jan 13, 2013 at 2:10 PM, Martin Braun (CEL) martin.br...@kit.eduwrote: On Sun, Jan 13, 2013 at 01:50:34PM -0500, Tom Rondeau wrote: I really hope a lot of you on this mailing

[Discuss-gnuradio] GNU Radio and Ettus Research at Wireless Innovation Forum

and drinks. We'll post the location of the restaurant as well. Hope to see you there! Matt Ettus ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

Re: [Discuss-gnuradio] GNU Radio Hardware requirement

Ghulam, USRP systems are available directly from Ettus Research and we can ship to India without issues. http://ettus.com Thanks, Matt Ettus On Thu, Dec 27, 2012 at 8:58 AM, Ghulam Rasool Begh grbegh...@yahoo.comwrote: Hi all, I want to build a complete gnuradio platform. Being very new

Re: [Discuss-gnuradio] self-interference with wbx

One possible reason is that your transmitted signal may have a wider spectrum than you think due to the intermittent nature and or intermod. You should look at the spectrum of the output signal and make sure you are not transmitting wider than you think. Rapid on-off keying of the transmitted

Re: [Discuss-gnuradio] How to switch off the Automatic Digital-Gain-Control?

Which daughterboard are you using? Matt On Mon, Nov 26, 2012 at 3:48 AM, Andis Dembovskis andis.dembovs...@gmail.com wrote: Hello, dear Developer-Team, I recently came across to situation, when I have to model 2 overlapping signals within the same frequency but different power levels. I

Re: [Discuss-gnuradio] Hackfest and Twitter

We're also posting videos of some of our talks on the Ettus Research Youtube Channel. The first one is Tom Rondeau's talk about Control Port, which is a very exciting new development. http://www.youtube.com/user/ettusresearch Matt On Tue, Nov 27, 2012 at 10:59 PM, Matt Ettus m

[Discuss-gnuradio] Hackfest and Twitter

I just wanted to let everyone know that we're in the middle of the largest GNU Radio Hackfest we've ever had. We've pretty much got the whole GNU Radio core team here at Ettus Research in CA for the week. The 15 of us have already made a lot of great progress, and we'll be posting more about all

Re: [Discuss-gnuradio] Community Manager

Martin, I would really like to thank you for taking on this role. I look forward to working with you to expand and strengthen our community! Matt On Sun, Nov 4, 2012 at 8:12 AM, Tom Rondeau t...@trondeau.com wrote: Hi everyone, I just wanted to announce that we have created a new position

Re: [Discuss-gnuradio] Help on choice of daughter board for 40-50MHz experiments

On Mon, Oct 8, 2012 at 11:54 AM, Baidoo-Williams, Henry E henry-baidoo-willi...@uiowa.edu wrote: We are looking for a daughterboard to run experiments within the range of 40-50MHz. We have used the basic Tx and basic Rx before but just for routing signals to an oscilloscope probe. Has anyone

Re: [Discuss-gnuradio] Does USRP ADC have internal noise (out-of-band) dither?

The ADS62P4x does not have internal dither. In many RF systems there is enough gain that natural noise is strong enough to give enough dither. Matt On Mon, Oct 1, 2012 at 10:14 PM, LD Zhang ldz10...@gmail.com wrote: Dear Group, I need to clarify a very basic feature of the USRP ADC. The

Re: [Discuss-gnuradio] 8-channel receiver

You can use a gigabit ethernet switch and put all the USRPs on there. You should be able to make USRPs send data to each other. You will of course need to do work to get your algorithms into the FPGA. Matt On Wed, Sep 26, 2012 at 12:38 PM, Anisha Gorur at...@virginia.edu wrote: I have a quick

Re: [Discuss-gnuradio] XCVR2450 Gain Calculations: AD8132 Low Cost High Speed Differential Amplifier

The AD8132 is configured for G=1 On Tue, Aug 21, 2012 at 4:57 AM, Michael Hill moth...@gmail.com wrote: Hi All, I'm looking at the parts of the XCVR2450 trying to do theoretical gain / noise calcs. My first question is... has anyone else done these? Do my numbers seem reasonable?

Re: [Discuss-gnuradio] WBX upper range limit

The daughterboard code does some limit checking, so you would want to disable that in uhd/host/lib/usrp/dboard/db_wbx_versionX.cpp (where X is the version of the board you have). Some boards will tune further than 2.2 GHz, but it will vary. 80 MHz might be a bit far for it, but you can try.

Re: [Discuss-gnuradio] [USRP-announce] Announcing the LiveUSB SDR Environment

Yes, the link is on the order page. Matt On Tue, Jun 19, 2012 at 8:55 PM, S'dir chit...@gmail.com wrote: Hi Matt, Would like to know if there is an iso image file which we can write to CD/USB. Thanks Regds, Sudhir. On Tue, Jun 19, 2012 at 2:27 AM, Matt Ettus m...@ettus.com wrote

[Discuss-gnuradio] Announcing the LiveUSB SDR Environment

will take longer to boot, load programs, and respond to user interaction. Now, developing with the USRP product family is as easy as plugging in the LiveUSB SDR Environment and booting up! Matt Ettus ___ Discuss-gnuradio mailing list Discuss-gnuradio

Re: [Discuss-gnuradio] USRP1 XCV2450 LO - can it be bypassed with the motherboard's LO

Each XCVR2450 is already locked to the motherboard crystal. But bypass it with the motherboard's X-TAL source does not make sense. The LO is generated by locking to the motherboard crystal source. No bypassing is necessary. Matt On Fri, Jun 8, 2012 at 2:12 PM, Nick Iliev nilie...@gmail.com

Re: [Discuss-gnuradio] Programming FPGA

The Verilog code is all available and it is in the UHD git repository. I would suggest you start there. Matt On Fri, Jun 1, 2012 at 10:34 AM, sibar002 sibar...@ucr.edu wrote: Hello I am currently working on the USRP N210. I am trying to modify the VHDL code for the FPGA in order to gain

Re: [Discuss-gnuradio] SSDT question

On Fri, May 4, 2012 at 5:52 PM, frankist francisco_pais...@hotmail.comwrote: Hi, This question isn't necessarily about GNU Radio but about SDR in general. I am studying spectrum sensing algorithms and I was reading about simultaneous sensing and data transmission or SSDT for out-band

Re: [Discuss-gnuradio] Full Duplex with RFX2200

You are probably ok, but you might also want to use bandpass filters to keep the excess TX power out of the RX. Matt On Wed, Jan 4, 2012 at 2:59 PM, Ed Criscuolo edward.l.criscu...@nasa.govwrote: I'm working on an application that will do full-duplex using an RFX2200 daughterboard in a USRP1.

Re: [Discuss-gnuradio] Sampling with TVRX daughterboard and Nyquist frequency

On Tue, Dec 13, 2011 at 8:44 AM, Cyril Cavel cyril.ca...@gmail.com wrote: Hi all, I use a TVRX daughterboard to acquire VHF signals. I believe (but I may be mistaken) that the TVRX daughterboard downconverts RF signals to a baseband of 6MHz bandwidth before going to the ADC. The function

Re: [Discuss-gnuradio] Interference-alignment and Coordinated multi-point on USRP

Per, This is great work! Interference alignment is a very hot topic these days. Thank you for pointing it out to us, and even more so for releasing your code. Matt On Wed, Nov 16, 2011 at 4:19 AM, Per Zetterberg p...@kth.se wrote: Hi List, I have implemented Interference-alignment and

Re: [Discuss-gnuradio] Re : Re : spurious sidelobes with WBX

filters for TX ? Does the new B100 has it ? Thank you Best regards Mathias -- *De :* Matt Ettus m...@ettus.com *À :* Mathias Coinchon coinc...@yahoo.com *Envoyé le :* Mercredi 4 Août 2010 15h55 *Objet :* Re: Re : [Discuss-gnuradio] spurious sidelobes with WBX

Re: [Discuss-gnuradio] DAC I/Q swap and bit inversion

On Wed, Oct 12, 2011 at 4:12 PM, Ian Buckley ian.buck...@gmail.com wrote: (Matt, this just occurred to me, you should be 2's comping the bus here, not simply inverting it, you've introduced an LSB DC offset). An optimization -- the 1 LSB offset is swamped by real offset in the hardware, so we

Re: [Discuss-gnuradio] New webpage look

Thanks for doing this. The new site looks great! Matt On Mon, Oct 10, 2011 at 12:58 AM, Martin Braun martin.br...@kit.edu wrote: On Sun, Oct 09, 2011 at 12:38:44PM -0400, Tom Rondeau wrote: [Website] As always, feedback and constructive criticism are welcome! Also, it would be great

Re: [Discuss-gnuradio] N210 non-uhd?

No, it won't work. I would strongly suggest you switch to UHD. If that isn't possible, we have some USRP2s which we can sell you. Matt On Fri, Oct 7, 2011 at 10:50 AM, Brett L. Trotter br...@webtrotter.comwrote: Can I burn the USRP2 non-UHD firmware on an N210?

Re: [Discuss-gnuradio] New Product Announcements from Ettus Research

On Tue, Oct 4, 2011 at 6:25 PM, Jeffrey Gregory jagre...@umich.edu wrote: The B100 looks appealing for an upgrade from my USRP1, but I have some questions. Since the B100 can accept 10MHz and PPS reference, is it compatible with the GPSDO module? It can accept 10 MHz and PPS from a GPSDO,

[Discuss-gnuradio] New Product Announcements from Ettus Research

. Both the E100 and E110 are in stock and ready to ship. = As always, you can purchase all of our products through: http://www.ettus.com/order and you can contact sa...@ettus.com if you have any further questions. Thanks, Matt Ettus President

Re: [Discuss-gnuradio] New Product Announcements from Ettus Research

On Mon, Oct 3, 2011 at 2:34 PM, Richard Clarke rich...@clarke.biz wrote: Hi Matt, just wondering what the PPM spec is of the onboard TCXO? Will the datasheet be available soon? 2.5 ppm. Datasheet may not be ready for a week or two. Matt ___

Re: [Discuss-gnuradio] Bandwidth of XCVR 2450 Daugtherboard

On Wed, Sep 28, 2011 at 5:18 AM, Konstantinos mammasi...@hotmail.comwrote: Hi again, I recently found out that the Bandwidths of the XCVR 2450 Daugtherboard are as follows for the RX and TX side respectively: Bandwidths (Hz): RX: 15M, 19M, 28M, 36M; (each +-0, 5, or 10%) TX: 24M,

Re: [Discuss-gnuradio] Sample fast and upload after

You would need to modify the FPGA to do this. However, some other people have done that and may have code available. Check the email archive on the usrp-users list. Matt On Tue, Sep 20, 2011 at 11:21 AM, mipro...@gmail.com wrote: Hi all, Is it possible with GNURadio to sample at high speed,

Re: [Discuss-gnuradio] GNU radio

USRP N210 and SBX transceiver will give you coverage of all those bands. Matt On Wed, Sep 21, 2011 at 9:17 AM, Andrew Rich vk4...@tech-software.netwrote: Maybe I can list my aims and you can tell me if GNU and N200 can do this ? 1. Receive on 1030 MHz - BW not sure yet 2. Receive on 1090

Re: [Discuss-gnuradio] dsp_rx_old.vhdl

Well, you shouldn't be using dsp_core_rx_old.v, because it is old and unused. Look at dsp_core_rx.v which contains all of the dsp operations. It has a CORDIC mixer, CIC filter, and dual halfband filters. Matt On Mon, Sep 19, 2011 at 9:06 AM, Gabriel Morel morelgabr...@videotron.cawrote: **

Re: [Discuss-gnuradio] dsp_rx_old.vhdl

i can find the explanation of the dsp_core_rx? - Original Message - *From:* Matt Ettus m...@ettus.com *To:* Gabriel Morel morelgabr...@videotron.ca *Cc:* Discuss-gnuradio@gnu.org *Sent:* Monday, September 19, 2011 1:29 PM *Subject:* Re: [Discuss-gnuradio] dsp_rx_old.vhdl Well

Re: [Discuss-gnuradio] FW: LFRX Board as Audio analyzer

You need to turn off DC offset correction. DC offset correction results in a narrow spectral hole around DC. Matt On Tue, Sep 13, 2011 at 4:13 AM, Kanbier, J.W. j.w.kanb...@issc.leidenuniv.nl wrote: ** Hi, I am trying to do some audio analyzing with the usrp and lfrx board which claims

Re: [Discuss-gnuradio] Question about IF frequency to send

The CORDIC is only used for fine frequency correction when the LO can't tune to the exact frequency you want. The IF is zero. Matt On Wed, Aug 31, 2011 at 7:03 AM, Delgado, Christopher christopher.delg...@g3ti.net wrote: ** Hello, We’re implementing a CDMA base station wholly within the

Re: [Discuss-gnuradio] Extending UHD Device Support

firmware and FPGA designs. This is fine as long as you are ok with invoking the GPL requirements on those portions of your design. Users of Ettus Research hardware are able to use all of this under less restrictive terms in our alternative license. Matt Ettus President, Ettus Research LLC On Wed, Aug

Re: [Discuss-gnuradio] [USRP-users] SBX Noise

On 08/09/2011 02:32 PM, Farrukh Aziz wrote: Hi, I have been working with SBX and WBX dboards for a while now. I have also experienced more noise with SBX. A number of people have reported this. We are investigating and will get back to you soon. What motherboard are you seeing this with?

Re: [Discuss-gnuradio] replica outband

On 07/28/2011 02:58 AM, Gaetano Mendola wrote: Hi all, I'm transmitting my signal with 5Mhz bandwidth with a carrier of 70Mhz, analyzing output spectrum I see some replicas outside the bandwidth (see attached image). I'm using a WBX, will the uhd::usrp::multi_usrp::set_tx_bandwidth remove

Re: [Discuss-gnuradio] Phase correction

On 07/27/2011 07:58 AM, Marcus D. Leech wrote: I'm looking into updating some of my interferometer code to work with newer hardware, like DBS_RX2, which will have unpredictable phase offsets between LOs. I played with the fractional interpolator a little while ago, to use for

Re: [Discuss-gnuradio] Removal of USRP2 support

On 07/19/2011 08:11 PM, Josh Blum wrote: On 07/19/2011 07:50 PM, Brenden Smith wrote: Quick question: why is the removal of support for the USRP2 (et. al.) being contemplated? I know its a bit older, but is there another reason? Nothing to do with age. It has a lot of problems and isnt

Re: [Discuss-gnuradio] Max temperature for usrp2

If you can stand the temperature, your usrp should be fine. Matt Steve Mcmahon steve.mcmaho...@yahoo.com wrote: I have the same problem -- I'm going to be using a USRP2 outdoors in the shade (not direct sunlight) for around six hours in Yuma, Arizona, where the daytime temperatures are

Re: [Discuss-gnuradio] WBX CW transmit problem

On 06/30/2011 07:13 AM, Aleš Povalač wrote: Dear all, I have been testing USRP2 with WBX board (#957). Using GNU Radio, I have created a simple CW TX system. The problem: output signal is oscillating when I set the TX frequencies to 900MHz band. Signal output (in time domain) at TX/RX

Re: [Discuss-gnuradio] Multiplexing modulators

On 06/21/2011 06:28 AM, John Ackermann N8UR wrote: In GRC I would like to combine the outputs of several NBFM modulator blocks to drive a USRP sink. The idea is to output several discrete channels within the USRP transmit bandwidth, e.g., three signal channels at -30 kHz, 0 kHz, and +30 kHz

Re: [Discuss-gnuradio] USRP1 FPGA modification problem.

Tiago, It is very hard to help you. You are basically saying we did something different and it doesn't work. You haven't posted code, you're using an old version of GNU Radio, and not using the latest drivers (UHD). This all makes it hard to help you. If the FPGA is asserting have_pkt_rdy,

Re: [Discuss-gnuradio] Maximum Frequency Hopping speed of the Ettus Transceiver RF frontends

On 06/10/2011 06:15 AM, Sergio Benco wrote: Dear all, I've read on the Ettus transceiver daughterboards datasheet that the PLL lock time is around 200us, which makes it suitable for some FH systems (eg. Bluetooth). Having worked on Bluetooth systems in the past, I can tell you

Re: [Discuss-gnuradio] Mainlining FPGA modifications

On 06/07/2011 04:09 PM, Alexander Chemeris wrote: Hi all, On Sat, May 28, 2011 at 21:30, Alexander Chemeris alexander.cheme...@gmail.com wrote: On Sat, May 28, 2011 at 21:04, Marcus D. Leech mle...@ripnet.com wrote: Hi all, I'm not sure whether to post this to GnuRadio or to USRP-users,

Re: [Discuss-gnuradio] LF Transmission with Gnuradio/USRP

On 05/30/2011 05:13 AM, wie...@gmx.de wrote: Dear GNU Radio gurus, I have sent this before but it might have not reached you guys. Excuse me some basic questions. Point me to another forum or information site if this is not the right place... we are supposed to pre-develop an inductive

Re: [Discuss-gnuradio] about RFX2200 duaghter board

On 05/30/2011 01:22 AM, Songsong Gee wrote: I have question on RFX2200 What frequency range does RFX2200 support? I mean, I know it supports 2.0-2.4 GHz. but, For RFX2400, it supports 2.3-2.9 GHz if bypassing is applied, basically 2.4-2.483 GHz is supported without bypassing. Thus, if I

Re: [Discuss-gnuradio] Please give me some advice for purchasing the USRP series!

On 04/21/2011 06:40 PM, 김보미 wrote: 1) Buy one USRP N200 because of this comment of Ettus “Please consider the USRP N200 series instead of USPR2.” And connect *the USRP2* and USRP N200 with MIMO cable to implement the relay system 2) Buy one USRP. Then, use the USRP for 2 TX

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