Re: [Discuss-gnuradio] Hello GNURadio from the Amateur Radio World

[Marcus D. Leech]

On 05/26/2018 09:44 PM, Dan CaJacob wrote:

Will,

I think you will find a wide variety of real-world applications 
GNURadio has been used for. For myself, that includes ground to space 
and space to ground communications systems, encompassing both common 
desktop machines as well as embedded processors and FPGAs. Certainly 
it is easier to write a modem for a desktop CPU, but a good C++ 
developer (I am not one, but I work with them) can take advantage of 
pipelined operations in both embedded and desktop CPUs to make 
distinction between the platforms less crippling. The Volk project 
even makes this win more or less free (no need to write your own 
instrinsics) if you profile it for your specific embedded device.


That said, I notice a lot of people new to GR wanting to jump right 
into doing something hard on a Raspberry Pi or similar SBC. I think 
you'll find that's generally a mistake. I'd suggest getting 
comfortable with GR and SDR on the desktop before moving on to 
embedded systems, because there's a lot to learn in both and it's 
going to be worse if you have to learn them both at the same time.


- Dan

Another thing I find is that there's a big gap in comprehension about 
how much 'stuff' happens to each and every sample for even relatively simple

  (from a 10kft view) DSP flows.

"My CPU runs at 2.5GHz, and I'm only bringing in a measly 10MHz, why is 
this not working for me?"


"Why can't I make a precipitously-steep filter--this is software, after 
all.  It's all kinda virtual, right?"


Folks who are coming at this from the "apps" world may never have 
considered or experienced or pondered exactly what happens inside
  the "sausage factory" we call a modern operating system. 
"Sample-arrives>[MAGIC]->it's in my app>[MORE 
MAGIC]>cool stuff happens".


If you're coming from a world where real-world "events" happen at the 
rate of user-clicks, thinking about being responsive to "events" that may be
  happening millions of times per second may be a bit of a cognitive 
shock...


Just random thoughts from years and years watching this ballet play out



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Re: [Discuss-gnuradio] Hello GNURadio from the Amateur Radio World

[Dan CaJacob]

Will,

I think you will find a wide variety of real-world applications GNURadio
has been used for. For myself, that includes ground to space and space to
ground communications systems, encompassing both common desktop machines as
well as embedded processors and FPGAs. Certainly it is easier to write a
modem for a desktop CPU, but a good C++ developer (I am not one, but I work
with them) can take advantage of pipelined operations in both embedded and
desktop CPUs to make distinction between the platforms less crippling. The
Volk project even makes this win more or less free (no need to write your
own instrinsics) if you profile it for your specific embedded device.

That said, I notice a lot of people new to GR wanting to jump right into
doing something hard on a Raspberry Pi or similar SBC. I think you'll find
that's generally a mistake. I'd suggest getting comfortable with GR and SDR
on the desktop before moving on to embedded systems, because there's a lot
to learn in both and it's going to be worse if you have to learn them both
at the same time.

- Dan

On Sat, May 26, 2018 at 7:00 PM Nick Foster  wrote:

> Will,
>
> Do you have a specific problem we can try to help you with? "Not pleasant"
> gives us very little to chew on.
>
> Nick
>
>
> On Sat, May 26, 2018, 9:20 PM Will Gilliam  wrote:
>
>> Hello Peoples, I just signed up for the discuss list, so I thought I
>> would introduce myself
>>
>> My name is Will Gilliam and I am a FCC licensed General amateur radio
>> operator. (Ki7OXA)
>>
>> My first draw into GNURadio was the possibility of operating a high
>> frequency 5W radio
>> built from a Raspberry Pi 3, an Soundcard SDR radio. I love the idea of
>> embedded computing, SDR radios and GNURadio. Its small, its portable, and
>> because it involves a computer, the radio can be anything, even a modem.
>> Add amateur radio license, even the Element 2 technicians, your still
>> having fun VHF and up...
>>
>> Doing anything on a large computer is easy. Got more work? throw more cpu
>> time on the task, but anyone that tinkers within the Embedded world, you
>> know you really can't do that to a large degree.
>>
>> My experience with GNURadio is so far self taught and not pleasant. I am
>> uncertain if my poor experiences are from lack of experience, not enough
>> computer power, or a mix of both.
>>
>> Is there anyone that is using raspberry pi's and GNURadio on any sort of
>> realtime projects? Is there a better board to use or one that GNURadio is
>> going to try to support?
>>
>>
>> Look forward to learning and chatting with you all
>>
>>
>> Will Gilliam
>> ___
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-- 
Very Respectfully,

Dan CaJacob
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Re: [Discuss-gnuradio] Flowgraph

[Dan CaJacob]

I'll do all the work for 1 x 10^-5 BERCoin.

On Sat, May 26, 2018 at 9:59 AM Derek Kozel  wrote:

> Hello Dewan,
>
> I'm glad that you are using GNU Radio, but no one here is going to do your
> entire project for you. We are happy to help with specific questions or
> problems, but not until you show us what you have tried and what problem
> you are having with it.
> https://wiki.gnuradio.org/index.php/ReportingErrors
>
> I see that you have no synchronization blocks in your flowgraphs, they
> will be needed when using actual hardware. Are you able to correctly send
> and receive a file when you are doing a pure simulation, no hardware?
>
> Regards,
> Derek
>
> On Sat, May 19, 2018 at 6:17 AM, Dewan Arif  wrote:
>
>> I hope you are doing great. I need your help for one of my project. I
>> want to transmit data in wireless communication using gnuradio and usrp
>> 2901. After that I want to calculate BER and plot BER vs SNR.
>>
>> First, you have to give me the Gnuradio Flowgraph. I want to transmit
>>
>> a. Text
>> b. Picture
>> c. Audio
>> d. Video.
>>
>> and you have to save at .txt ; .png ; .wav and .avi format in the
>> receiver end.
>>
>> you have to give two flow graph one for simulation and other for
>> real-time transmission (each data type text, picture, audio, and video)
>>
>> you have to use two scheme one is DPSK and other is WIFI.
>>
>> The second part is you have to calculate the BER and plot the BER vs SNR
>> curve in Matlab  for each transmission (text, picture, audio, and video)
>>
>>
>> It should not take much time if you are an expert.  I have attached the
>> picture as an example.
>>
>> List What I Want :
>>
>> 1) TransceiverFlowgraph.grc in Gnuradio ( data type: text, audio, video,
>> picture) DPSK and WiFi Simulation
>>
>> 2) Transceiver Flowgraph.grc in Gnuradio ( data type: text, audio, video,
>> picture) DPSK and WIFI Real-time transmission
>>
>> 3) Matlab code BER Calculation, plot BER vs SNR curve for simulation
>>
>> 4) Matlab code BER Calculation, plot BER vs SNR curve for real-time
>> transmission.
>>
>>
>> Please help me out
>>
>> ___
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>>
>>
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-- 
Very Respectfully,

Dan CaJacob
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Re: [Discuss-gnuradio] Hello GNURadio from the Amateur Radio World

[Nick Foster]

Will,

Do you have a specific problem we can try to help you with? "Not pleasant"
gives us very little to chew on.

Nick

On Sat, May 26, 2018, 9:20 PM Will Gilliam  wrote:

> Hello Peoples, I just signed up for the discuss list, so I thought I would
> introduce myself
>
> My name is Will Gilliam and I am a FCC licensed General amateur radio
> operator. (Ki7OXA)
>
> My first draw into GNURadio was the possibility of operating a high
> frequency 5W radio
> built from a Raspberry Pi 3, an Soundcard SDR radio. I love the idea of
> embedded computing, SDR radios and GNURadio. Its small, its portable, and
> because it involves a computer, the radio can be anything, even a modem.
> Add amateur radio license, even the Element 2 technicians, your still
> having fun VHF and up...
>
> Doing anything on a large computer is easy. Got more work? throw more cpu
> time on the task, but anyone that tinkers within the Embedded world, you
> know you really can't do that to a large degree.
>
> My experience with GNURadio is so far self taught and not pleasant. I am
> uncertain if my poor experiences are from lack of experience, not enough
> computer power, or a mix of both.
>
> Is there anyone that is using raspberry pi's and GNURadio on any sort of
> realtime projects? Is there a better board to use or one that GNURadio is
> going to try to support?
>
>
> Look forward to learning and chatting with you all
>
>
> Will Gilliam
> ___
> Discuss-gnuradio mailing list
> Discuss-gnuradio@gnu.org
> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>
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[Discuss-gnuradio] Hello GNURadio from the Amateur Radio World

[Will Gilliam]

Hello Peoples, I just signed up for the discuss list, so I thought I would
introduce myself

My name is Will Gilliam and I am a FCC licensed General amateur radio
operator. (Ki7OXA)

My first draw into GNURadio was the possibility of operating a high
frequency 5W radio
built from a Raspberry Pi 3, an Soundcard SDR radio. I love the idea of
embedded computing, SDR radios and GNURadio. Its small, its portable, and
because it involves a computer, the radio can be anything, even a modem.
Add amateur radio license, even the Element 2 technicians, your still
having fun VHF and up...

Doing anything on a large computer is easy. Got more work? throw more cpu
time on the task, but anyone that tinkers within the Embedded world, you
know you really can't do that to a large degree.

My experience with GNURadio is so far self taught and not pleasant. I am
uncertain if my poor experiences are from lack of experience, not enough
computer power, or a mix of both.

Is there anyone that is using raspberry pi's and GNURadio on any sort of
realtime projects? Is there a better board to use or one that GNURadio is
going to try to support?


Look forward to learning and chatting with you all


Will Gilliam
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[Discuss-gnuradio] [GSoC18] gr-modtool overhaul: Blog Update

[swapnil negi]

Hello everyone,
I have updated the blog

for the Week 2 updates and the tasks for week 3. Here
 is the link to the
updated Github project.
There were several errors and hindrances, so this week was highly learning
experience.



Thanks,
Swapnil Negi
Indian Institute of Technology Roorkee
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Re: [Discuss-gnuradio] Flowgraph

[Derek Kozel]

Hello Dewan,

I'm glad that you are using GNU Radio, but no one here is going to do your
entire project for you. We are happy to help with specific questions or
problems, but not until you show us what you have tried and what problem
you are having with it.
https://wiki.gnuradio.org/index.php/ReportingErrors

I see that you have no synchronization blocks in your flowgraphs, they will
be needed when using actual hardware. Are you able to correctly send and
receive a file when you are doing a pure simulation, no hardware?

Regards,
Derek

On Sat, May 19, 2018 at 6:17 AM, Dewan Arif  wrote:

> I hope you are doing great. I need your help for one of my project. I want
> to transmit data in wireless communication using gnuradio and usrp 2901.
> After that I want to calculate BER and plot BER vs SNR.
>
> First, you have to give me the Gnuradio Flowgraph. I want to transmit
>
> a. Text
> b. Picture
> c. Audio
> d. Video.
>
> and you have to save at .txt ; .png ; .wav and .avi format in the receiver
> end.
>
> you have to give two flow graph one for simulation and other for real-time
> transmission (each data type text, picture, audio, and video)
>
> you have to use two scheme one is DPSK and other is WIFI.
>
> The second part is you have to calculate the BER and plot the BER vs SNR
> curve in Matlab  for each transmission (text, picture, audio, and video)
>
>
> It should not take much time if you are an expert.  I have attached the
> picture as an example.
>
> List What I Want :
>
> 1) TransceiverFlowgraph.grc in Gnuradio ( data type: text, audio, video,
> picture) DPSK and WiFi Simulation
>
> 2) Transceiver Flowgraph.grc in Gnuradio ( data type: text, audio, video,
> picture) DPSK and WIFI Real-time transmission
>
> 3) Matlab code BER Calculation, plot BER vs SNR curve for simulation
>
> 4) Matlab code BER Calculation, plot BER vs SNR curve for real-time
> transmission.
>
>
> Please help me out
>
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> Discuss-gnuradio@gnu.org
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>
>
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Re: [Discuss-gnuradio] a single source module to generate a random sequence with a pre-ample in the front

[CEL]

Hi Linda,

Why should the Ettus website contain GNU Radio examples?
Also, why should this specific example exist? 
Anyway, all you need is the "vector insert" block.

Best regards,
Marcus
On Fri, 2018-05-25 at 21:05 -0400, Linda20071 wrote:
> There is an example on ettus website that uses a single source module
> to generate a random sequence with a preamble in the front (on the
> same field in this module's properties dialogue box). I think this is
> an example to show preamble synchronization. I simply couldn't find
> the website with this example / flowgraph on ettus website. Could
> somebody kindly point out where it is?
> 
> Thank you. 
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