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From: | Kyeong Su Shin |
Subject: | Re: [Discuss-gnuradio] USRP DDC and GNURadio Bandwidth Problem |
Date: | Thu, 17 May 2018 17:11:30 +0000 |
Hello Ali, That "bandwidth" parameter of the UHD Source/Sink block is used to adjust the 'analog bandwidth' of the 'daughterboard'. Most of the daughterboards have a fixed analog bandwidth, so that parameter will be simply ignored in most cases ('uhd_usrp_probe'
will give the detailed info about the daughterboard). They are not used to configure digital filter taps.
If you want to add digital filters, you can simply add them on GNU Radio as seperate blocks. Software FIR/IIR filters are pretty slow, but they can keep up when the sampling rate is that low. If you want to push down some codes to the FPGA, consider RFNoC.
Regards, Kyeong Su Shin
보낸 사람: Ali <address@hidden> 대신 Discuss-gnuradio <discuss-gnuradio-bounces+address@hidden>
보낸 날짜: 2018년 5월 17일 목요일 오후 10:10:27 받는 사람: address@hidden; address@hidden 제목: Re: [Discuss-gnuradio] USRP DDC and GNURadio Bandwidth Problem Hi,
I don't want my sampling rate to be 25 kHz. My sampling rate is already 195312 Hz which is I think the minimum sampling rate for X310.
What I want is to filter out the frequencies which are at least 25 kHz away from my center frequency. For example I don't want to see a transmission which is 50 kHz away from my center frequency. Is it possible? How does the "bandwidth" parameter in UHD
Source Block in GNURadio affect the captured IQ data?
Regards,
Ali
2018-05-14 12:19 GMT+03:00 Derek Kozel
<address@hidden>:
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