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From: | Kyeong Su Shin |
Subject: | Re: [Discuss-gnuradio] Two channel receiver |
Date: | Fri, 26 Apr 2019 03:01:26 +0000 |
Hello YENDstudio,
I know that USRP 1 can take two RF daughterboards, but the effective sampling rate of the device in this configuration is a bit limited (probably too slow for LTE applications).
You can probably use two SDR boards with synchronization capabilities (or synchronization hacks) and a suitable clock generator. I know that my HackRF boards can do this ( https://github.com/mossmann/hackrf/wiki/Multiple-device-hardware-level-synchronization
), but I never tried this by myself (and the sample alignments can be off by ~50 samples, according to the wiki, so you have to correct that for the perfect alignment). I also know that there are a few cheap SDRs with synchronization capabilities,like AirSpy,
but I never used them.
You can make your own RF frontend and add that to one of the antenna ports of a LimeSDR-like SDR by using a mixer and a clock generator (available on RF components stores, or on eBay/AliExpress, if you are willing to deal with dodgey sources). You may have
to add an additional LNA (LNA4ALL? ) and/or a filter before the mixer to improve the noise figure (but you need to make sure that you are not overloading your SDR by doing so). All of these parts are available as SMA-type plug-in modules, and are in reasonable
price, if you are okay with cheapo eBay/AliExpress parts.
Regards,
Kyeong Su Shin
보낸 사람: YENDstudio <address@hidden>
보낸 날짜: 2019년 4월 26일 금요일 오전 1:43 받는 사람: Kyeong Su Shin 참조: address@hidden 제목: Re: [Discuss-gnuradio] Two channel receiver I just wanted to receive time-synchronized channels.
On Wed, Apr 24, 2019, 15:15 Kyeong Su Shin <address@hidden> wrote:
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