Currently I am working with the Ettus Research's N310 on the implementation of different PSK modulation schemes. I am interested on measuring the Bit Error Rate -BER- for each scheme when I transmit data between two USRPs located one beside the other. Therefore, I am employing GNU Radio Companion for the SW development. In the case of the BPSK transceiver, I am using a standard configuration of a vector source and a constellation modulator to create the PSK symbols, which are transmitted at 2.45GHz using the VERT2450 antennas. These antennas work in the frequency range from 2.4 - 2.5 GHz and from 4.9 - 5.9 GHz. Since I have a desktop computer with only one ethernet port, I am using the NetGear GS108 switch, which has 16Gbps bandwidth and a forwarding rate of 10Mbps port. The current SW setup is shown in the following figure:
I am using as input a vector of only zeros since I am interested to probe that my transceiver detects correctly one constellation. However, I am having continious jumps between the constellation points as you can see from the picture in the left side. I have several questions about my setup:
I would really appreciate if someone could help me to bring some light to all of this questions.
Thanks in advance
See my response at https://lists.gnu.org/archive/html/discuss-gnuradio/2020-08/msg00172.html
看起来您正在使用 8 SPS 进行调制,然后解调 16 SPS——PCSync 上为 8:1,CMA eq 上为 2:1。
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