[Discuss-gnuradio] cheap sdr platform

Hello guys, Have some suggestion on the cheaper SDR platform for us to use with the GNURADIO software? As a student, I cannot buy the expensive usrp ,but I want to learn the knowledge by the hardware and software. Any recommend? For example,use the hardware to do some experiments

[Discuss-gnuradio] gr-lte api

Hello guys, Does the gr-lte have the api like gnuradio(for example https://gnuradio.org/doc/doxygen/classgr_1_1digital_1_1ofdm__carrier__allocator__cvc.html)? Gnuradio api has the detail description about every modules which can help us to understand it. Although the documents like the thesis pro

[Discuss-gnuradio] macport install gnuradio

Hi, I use the macport to install the gnuradio. It works normally. But I can not find the source lib file for example "dynamic_channel_model_impl.cc " and so on. /opt/local/share/gnuradio/ r

Re: [Discuss-gnuradio] gr-lte make error

al/include/lte/subblock_deinterleaver_vfvf.h -- Up-to-date: /usr/local/include/lte/pbch_descrambler_vfvf.h 2017-08-29 10:26 GMT+08:00 w xd : > thanks so much, I follow your direction, it's ok now. > Now "make" and "sudo make install " all ok. >

Re: [Discuss-gnuradio] gr-lte make error

uot;lte_layer_demapper_vcvc" not found Block key "lte_qpsk_soft_demod_vcvf" not found 2017-08-28 18:51 GMT+08:00 Michael Dickens : > Here's the patch; you use it from the top-level gr-lte directory as: > {{{ > patch -p0 < patch-add-volk.diff > }}} > I hope thi

Re: [Discuss-gnuradio] gr-lte make error

out adding gr-lte into MP for a while. Would not be difficult for me to > do so, along with patching this issue, so that installing it is as simple > as "sudo port install gr-lte" ... - MLD > > On Sun, Aug 27, 2017, at 03:34 AM, w xd wrote: > > Environment: Mac os 10.12.6 &g

Re: [Discuss-gnuradio] gr-lte make error

64bit 2017-08-27 15:44 GMT+08:00 Andrew Rich : > Are you on a 32 bit or 64 bit > > Sent from my iPhone > > On 27 Aug 2017, at 5:34 pm, w xd wrote: > > Environment: Mac os 10.12.6 > > I want to install gr-lte and learn something about LTE. And I follow the > instr

[Discuss-gnuradio] gr-lte make error

Environment: Mac os 10.12.6 I want to install gr-lte and learn something about LTE. And I follow the instruction from https://github.com/kit-cel/gr-lte. when the go to the command "make -jX", it go wrong. The error message: Linking CXX shared library libgnuradio-lte.dylib Undefined symbols for

[Discuss-gnuradio] run gnuradio on mac

Hi, I have installed the gnuradio on my mac pc(mac os sierra).I have two questions: 1.When I run some grc example,the grc will post a error.It said"missing xterm executable".How to solve it? 2.I want to install a desktop icon.I have find the command from the offical website"sudo grc_

Re: [Discuss-gnuradio] How to change the SNR through gnuradio

Hi, And I want to know the "phase noise variance" of our instrument?Thanks so much. 2016-03-01 20:50 GMT+08:00 w xd : > Hi, > > I used the USRP N210 and sbx board.What is the dynamic range of the > instrument?Namely the maximum SNR?Thanks so much. > > Best Regard

Re: [Discuss-gnuradio] How to change the SNR through gnuradio

cus > > > On 01.03.2016 12:34, w xd wrote: > > Thanks so much. > > In this case,I just change the gain of the transmitter,will be change the > snr of the receiver? > > Thanks. > > 2016-03-01 19:02 GMT+08:00 Marcus Müller : > >> Dear zs, >> >> >

Re: [Discuss-gnuradio] How to change the SNR through gnuradio

t; adjustable gain: use the set_tx_gain(gain) method, or if you're using GRC, > look into the "RF settings" tab. > > Best regards, > Marcus > > > On 01.03.2016 09:56, w xd wrote: > > Sorry for that. > > I'm now using the USRP N210,one transmitter

Re: [Discuss-gnuradio] How to change the SNR through gnuradio

is absolutely unclear. SNR of what? What instrument? TX or > RX, or simulation? > > Best regards, > Marcus > > > On 01.03.2016 07:06, w xd wrote: > > Hi, > >I want to change the SNR through gnuradio.Can I realize it by just > change the gain of the gnuradio

[Discuss-gnuradio] How to change the SNR through gnuradio

Hi, I want to change the SNR through gnuradio.Can I realize it by just change the gain of the gnuradio?Or the instrument is fixed,and the snr can't be change? Thanks so much. Best Regards, zs ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.

[Discuss-gnuradio] sbx board realize RF1 send and RF2 receive simultaneously

Hi, I'm now using the usrp n210 and the sbx board.My question is:how to implementation the function that RF1 send and RF2 receive simultaneously in the grc? Just add the "USRP Sink" and "USRP source" block in one grc and choose the antenna "TX/RX" and "RX" respectively?Is this a synchroniz

Re: [Discuss-gnuradio] Two usrp connected by mimo cable

.Thanks so much. 2016-01-29 0:07 GMT+08:00 w xd : > Thanks very much. > > 1. If I connect two usrps by the mimo cable.Do you mean the transmitter > and receiver also have the frequency offset if I don't use the 10MHz > reference? > > 2.Does the gnuradio have the related ex

Re: [Discuss-gnuradio] Two usrp connected by mimo cable

use one pc to control two usrp connect by the mimo cable to realize the transmit and receive? Best regards 2016-01-29 0:01 GMT+08:00 w xd : > Thanks so much. > 1.Is sbx support the full-duplex? > 2.If I use one pc and one usrp to realize the transmit and receive.Does > the frequency

Re: [Discuss-gnuradio] Two usrp connected by mimo cable

IMO cable forwards the data as if it was a network cable and a > switch. > > Best regards, > Marcus > > > On 01/28/2016 04:18 PM, w xd wrote: > > Hi all, > I want to use one pc to control two USRP to send and receive ofdm > signals synchronization in the grc.One

[Discuss-gnuradio] Two usrp connected by mimo cable

Hi all, I want to use one pc to control two USRP to send and receive ofdm signals synchronization in the grc.One USRP is used as transmitter and the other one is used as receive.Can it be done by just connect two usrp by mimo cable? Thanks in advance. Best regards, zs __

[Discuss-gnuradio] usrp iq imbalance problem

Hi, Have someone know the IQ imbalance problem of the USRP N210?Or do you have the official measurement data about the IQ imbalance problem of the USRP? Environment:USRP N210,sbx board Best Regards, z sw ___ Discuss-gnuradio mailing list Discuss

[Discuss-gnuradio] Projects using the USRP

Hi all, Nowadays as we all konw,we can use USRP implement many interesting applications.Many company and university used our USRP.And the website www.gnuradio.org show us a good tutorial. When I saw a similar instrument WARP and find they have a project website.And their website sh

Re: [Discuss-gnuradio] The noise power of the USRP

Thanks so much. If in a general indoor environment(no people),we just use a usrp as a receiver and in a quiet frequency band,have someone have the general data?Can you give a non-official data?around -80dbm?or -70dbm? Or how to measure it?What is the true way to measure it

Re: [Discuss-gnuradio] The noise power of the USRP

GMT+08:00 Marcus D. Leech : > On 12/20/2015 10:16 PM, w xd wrote: > > Thanks so much. > > "The true noise power" I mean if I don't send anything just use the usrp > to receive.Because don't have signal in the environment,the receive thing > using th

Re: [Discuss-gnuradio] The noise power of the USRP

5-12-21 11:04 GMT+08:00 Marcus D. Leech : > On 12/20/2015 09:58 PM, w xd wrote: > >> Hi, >> I want to know the true noise power(in dbm) of the usrp n210.And i'm >> using the sbx and lp0964 antenna. >> Do someone have the data? >> >>

[Discuss-gnuradio] The noise power of the USRP

Hi, I want to know the true noise power(in dbm) of the usrp n210.And i'm using the sbx and lp0964 antenna. Do someone have the data? Thanks. Best Regards, xs w ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.

Re: [Discuss-gnuradio] Measure the power using USRP

true result? Thanks. 2015-12-08 10:53 GMT+08:00 Marcus D. Leech : > On 12/07/2015 09:34 PM, w xd wrote: > >> Hi, >> I want to measure the power.I'm now transmit the OFDM signal. >> >> I use the usrp to receive data,and I save it to a file.I

[Discuss-gnuradio] Measure the power using USRP

Hi, I want to measure the power.I'm now transmit the OFDM signal. I use the usrp to receive data,and I save it to a file.I read all the data.Then: I use the formula to calculate the power: 10*log10(sum(abs(data).^2)/0.001) dbm Is it the right way to calculate the power under the

[Discuss-gnuradio] question about the ofdm receiver

Hi, Thank you in advance. I have a discussion with my classmates about the question.As we all know,the detection of the sync burst have delayed and the signal delayed again. The delay of the sync burst is fft_len-1.And the signal delayed cp_len+fft_len. Although the minor er

[Discuss-gnuradio] Fwd: question about the ofdm receiver

Hi, Thank you in advance. I have a discussion with my classmates about the question.As we all know,the detection of the sync burst have delayed and the signal delayed again. The delay of the sync burst is fft_len-1.And the signal delayed cp_len+fft_len. Although the minor er

[Discuss-gnuradio] question about the ofdm receiver

Hi, Thank you in advance. I have a discussion with my classmates about the question.As we all know,the detection of the sync burst have delayed and the signal delayed again. The delay of the sync burst is fft_len-1.And the signal delayed cp_len+fft_len. Although the minor er

Re: [Discuss-gnuradio] "cfo correction in ofdm_frame_equalizer_vcvc_impl.cc"

I have got the idea with my classmates.Sorry for disturb.Thanks. 2015-11-12 16:59 GMT+08:00 w xd : > Hi all, > > I have looked at the code of ofdm_frame_equalizer_vcvc_impl.cc > and I have a question about it.Thank you in advance. > > > To the payload r

[Discuss-gnuradio] "cfo correction in ofdm_frame_equalizer_vcvc_impl.cc"

Hi all, I have looked at the code of ofdm_frame_equalizer_vcvc_impl.cc and I have a question about it.Thank you in advance. To the payload route: The frame_len for example is 9.I think we should shift all the 9 symbols respectively.To the below source gnuradio code,it h

[Discuss-gnuradio] the block equalizer in ofdm

Hi, Thank you in advance. I have look at the api, and find 4 class about the ofdm equalizer， ofdm_equalizer_1d_pilots, ofdm_equalizer_base,ofdm_equalizer_simpledfe,ofdm_equalizer_static. 1.Can someone tell their difference and relation. 2.I look at the ofdm_frame_equalizer_vcv

Re: [Discuss-gnuradio] question about the qa_ofdm_sync_sc_cfb.py

bers are OK, but > it's always possible mistakes were made. Feel free to investigate. The > test cases would be a good place to go for confirmation. > > Cheers, > Martin > > On 09.11.2015 18:11, w xd wrote: > > Hi, > > > > Thank you so much. > >

[Discuss-gnuradio] the block “complex to Arg” in gnuradio

Hi all, Thank you very much in advance. I find the result of the block "complex to Arg" is same to the result in matlab most of the time,while sometimes the results is different from the result in matlab. For example, a=1.646236600879293e+03 + 8.043715071772

Re: [Discuss-gnuradio] question about the qa_ofdm_sync_sc_cfb.py

tion signal goes to one input of the > Header/Payload Demux and that triggers a capture. > > Cheers, > Martin > > On 08.11.2015 00:16, w xd wrote: > > Hi all, > > > > Thank you in advance.I‘'m so confused about the block Schmidl & > &

[Discuss-gnuradio] question about the qa_ofdm_sync_sc_cfb.py

Hi all, Thank you in advance.I‘'m so confused about the block Schmidl & Cox synch, 1.I'm check the qa_ofdm_sync_sc_cfb.py to try to understand the block. The original sequence: 5 zeros+4 cp_len+10 fft_len+14 data Just like this:[0, 0, 0, 0, 0, 1, -1, -1, -1,