Re: [Discuss-gnuradio] CIC Interpolator Filter in the FPGA

Hi, > On Sat, 3/28/09, slimchao wrote: > > Hello, > > can anyone explain how implemented the CIC interploator > Filter (how many > stages) in the FPGA. if we want a interpolation of 32, the > interpolation > rate is 4 in the AD9860 (4x interpolation), sothat th

[Discuss-gnuradio] CIC Interpolator Filter in the FPGA

. can anyone explain how implemented the CIC interploator Filter (how many stages) in the FPGA. if we want a interpolation of 32, the interpolation rate is 4 in the AD9860 (4x interpolation), sothat the interpolation is 32/4=8 in the FPGA (stages ??), am i right? thanks a lot! slimchao -- View

[Discuss-gnuradio] A question about maximum bandwidth of sender signal for simultaneous transmitting and receiving

. There is a CIC Interpolator in the FPGA for transmitting side. after the interpolator must eliminate the imaging-part. but i do not know the cutoff frequency of the interpolator filter. so i want to know the maximun bandwidth of sender signal. can anyone help? thanks you very much! slimchao

[Discuss-gnuradio] sychronization

Hallo Eric and Matt, My question is, with the LFTX/RX boards, is it possible for the synchronization-communication? I'm heading towards using the USRPs and LF boards as an RFID test bed. Looking forward to your replies, Thanks! Slimchao -- View this message in context:

[Discuss-gnuradio] Help:about the website http://comsec.com/wiki

Hallo Everyone, i want to get some infos from the website http://comsec.com/wiki, but i can not open it. can anyone tell me how to open it? Thanks a lot! slimchao -- View this message in context: http://www.nabble.com/Help%3Aabout-the-website-http%3A--comsec.com-wiki-tp21205752p21205752

[Discuss-gnuradio] Help!! Signal Synchronization using LFTX and LFRX-daughterboard

. Thank you, slimchao -- View this message in context: http://www.nabble.com/Help%21%21-Signal-Synchronization-using-LFTX-and-LFRX-daughterboard-tp21080538p21080538.html Sent from the GnuRadio mailing list archive at Nabble.com. ___ Discuss-gnuradio

Re: [Discuss-gnuradio] generate a singe gauss signal

? Thanks slimchao -- View this message in context: http://www.nabble.com/generate-a-singe-gauss-signal-tp21014307p21030501.html Sent from the GnuRadio mailing list archive at Nabble.com. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http

[Discuss-gnuradio] generate a singe gauss signal

Hi, At the moment I would like to see if I can generate a singe gauss signal. Looking through what gnuradio blocks are available. I was wondering firstly if it would be possible, and secondly, how this block works and behaves when it's running. Regards Slimchao -- View this message in co

Re[Discuss-gnuradio] ceive Problem

i use LFRX und LFTX daughterboard for RFID-Anwendung und i try to send a single gaussian puls with TX-daughterboards but i can not receive it with gr.file_sink(...). can anybody help me? my code is followed: from gnuradio import gr, gru, eng_notation from gnuradio import audio from gnuradio imp

[Discuss-gnuradio] what are the difference of usrp.set_tx_freq() and usrp.sink_x.tune()

Hi Everyone, I have a confuse by the setting of the value for the DDC. I have seen there are two commands: usrp.set_tx_freq() and usrp.sink_x.tune(). Could anyone tell me what are the difference of usrp.set_tx_freq() and usrp.sink_x.tune()? Thanks a lot! Chao -- View this message in contex

Re: [Discuss-gnuradio] How to store recieved signal (time, voltage) in .txt format

___ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > Hi Bruhtesfa, you can use gr.file_sink() to save your receive data. Slimchao -- View this message in context: http://www.nabble.com/How-to-store-

[Discuss-gnuradio] Help: How to convert a *.mat file to binary file?

Hallo Everyone, I have generated some samples of a sinesoid from Matlab and want to convert it to a binary file and use it as a source signal to the LFTX daughterboard. Can you tell me how i do to convert it? Thanks a lot, Chao -- View this message in context: http://www.nabble.com/Help%

Re: [Discuss-gnuradio] gr.file_source problem

Piotr Swiatkiewicz wrote: > > Hi, > > I am trying to feed samples from a file to the LFTX daughter board. > They were recorded using usrp_rx_cfile.py (from usrp.source_c). > I cannot see any real signal from LFTX when I run my script, > but fftsink2.fft_sink_c produces the correct spectrum whe