Thank you for your reply. REgarding the write speed, I assume that fast SD;s should be able to easily do that:
The NVMe Gen4 x4 interface delivers extreme performance of up to 7,500MB/s seq. read and 6,850MB/s seq. write speeds. By synchronization, I mean that all three SDRs start sampling at the same time (with less than 1us difference). The questions that I have are as below: Q1) Considering the fact that I will have a minimum of three SDRs, can one instance of the GNU Radio running on my PC handle three or more SDRs? Q2) Is there any ready to use GNU Radio Flow graph for such a scheme to work? Q3) Can you suggest any other low cost approach for recording and playing back 100MHz bandwidth at 2.4GHz? Thanks On Tue, May 21, 2024 at 5:47 PM Marcus D. Leech <patchvonbr...@gmail.com> wrote: > On 21/05/2024 20:24, Hamid Niknami via USRP-users wrote: > > Hi, > > I am very new to SDR. I need a low cost solution to record all the > interferences in the 100MHz band of the 2.4GHz ISM band (created by > multiple WiFi and Bluetooth devices) and then play it back to emulate the > interference. I do not need to decode those signals. I am thinking of using > B200 for down converting to base band, recording on a SSD and then playing > back the recorded signal using the B200 for upconverting to 2.4GHz. > Considering the fact that B200 cannot cover the whole 100MHz BW, I am > thinking of using three B200 with synchronized triggers, each set to a > different band. > > A few questions: > > - Will such a scheme work? > > - If yes, is there any GNU Radio Flow graph readily available for it? > > - If yes, what issues/headaches shall I expect to be ready to deal with? > > - Can multiple B200 be programmed to work in sync? If yes, what is the > recommended source for generating the synchronization pulse? (another > B200?) Any schematic for the needed HW connections for synchronization? > > - If the above approach is not going to work, what other low cost solution > do you suggest? > > Thanks. > > _______________________________________________ > USRP-users mailing list -- usrp-users@lists.ettus.com > To unsubscribe send an email to usrp-users-le...@lists.ettus.com > > Depends on what you mean by "synchronization". If you mean "OK, B200s, > please all start recording now", that is easily > accomplished using timed commands, and an initial setup that sets their > timestamp clocks to the same value using > a 1PPS input. > > IF you need all B200 devices to be mutual *phase coherent* with one > another, that's considerably more challenging. > > Recording 100MHz of bandwidth on a single (cheap, it sounds like) PC is > also going to be challenging. Even if you only record > 8-bit samples, that's 200Mbyte/second. > > > _______________________________________________ > USRP-users mailing list -- usrp-users@lists.ettus.com > To unsubscribe send an email to usrp-users-le...@lists.ettus.com >
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