Dear All, I am trying to implement some frequency hopping schemes in the ISM band with USRP N210 with RFX 2400 board ( I also tried the same with the SBX 40MHz board). I hop to the next channel (channel seperation : 5MHz) after every 6ms (tuning time for RFX board is 250usec) so tuning is not an issue. I set max gain (20dB in case of RFX board) and 30 dB in case of (SBX Board) and send random modulated (BPSK) bits.
However, I get very low power at the receiver (another USRP, RX gain 20dB) around -70 to -80 dB 1 meter away from the tx USRP. When I dont perfrom frequency hopping I get a rx power of -10 dB. I am not able to understand why the tx power reduces by such an extent while perfroming fx hopping, although I give enough settling time. Also is there any firmware which allows to further increase the tx power ? Any help to resolve this issue is appreciated. Best, Vaibhav ETH Zurich
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