Hi, My setup consists of two X310s - one transmitter and one receiver - connected with SMA cable. The receiver code has been independently tested by capturing the AP packets. The transmitter code was tested in a software loopback with the receiver. The gains on both sides were adjusted such that there was no clipping. attenuator (-10db) were used to connect the two USRPs over SMA link.
The transmitter transmits the packet but at the receiver end, these packets are not successfully decoded. A deeper look reveals that for a high correlation value (0.8) , packets are being detected by the packet detection mechanism but the signal field is decoded wrongly in all the packets detected. . Since unit testing of every block was successful, it was my hypothesis that the source of error lies on the transmitter-hardware side. I began scraping thorough the mail archives and got hold of this : http://lists.ettus.com/pipermail/usrp-users_lists.ettus.com/2015-September/015576.html This thread details on the problem related to burst transmissions in X310. Apparently, the successive bursts are not same - the end of first burst is appended to the second burst. I don't have the hardware to verify the claim, but assuming that it is correct. It still doesn't explain the wrong decoding of the signal field. What am I missing ? Abhinav PS Jadon 2012122 Electronics and Communication Engineering Undergraduate IIIT - Delhi
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