They plan to put some USRP E110 in the field and these USRP's should perform inter-node channel estimation on their own. They asked me to learn FPGA programming in USRP. I don't have VHDL/Verilog programming experience. Therefore, I am planning to use the simulink software to run the USRP E110's?

Using the C++ api, I create a flowgraph (starting with a usrp_source block) to estimate the frequency offset of an received signal, stop the flowgraph, adjust the RX center frequency of the usrp and then restart to measure the residual offset. 

I have written code to estimate it and post-process the data to remove it prior to averaging measurements, but I would obviously prefer if it didn't exist in the first place. My flowgraph comprises only a block pulse generator and USRP Sink for transmit, and a USRP Source and scope for receive.

The noise figure of 3~5dB can achieved with maximum 37.5dB Rx gain, which is indicated by the estimated SNR in my demodulation algorithm as well as the simple PSD observation. 2. When the Tx is on according to the TDD pattern. The receiver sensitivity becomes tens of dB poorer, although in the Rx slots I'm sure there is no Tx signal scheduled.

Sequence A: 100 MHz (default) —> 1000 MHz —> 500 MHz Sequence B: 100 MHz (default) —> 500 MHz —> 1000 MHz We are transmitting identical waveforms (non continuously, with prf of ~100 ms in external loopback with 30 dB attenuation) and estimate the PSD of the rx signal and apply a matched filter.

It's also difficult to get an estimate of absolute power rxed/txed from the USRPs. So I'd like to hear from anyone who knows about this stuff. I'm using SBX (max power 100mW), and I'm thinking of using either the 500-700MHz or the 1.2-1.3 GHz band. I'll be transmitting for 5ms every second for a few hours. The room is about 6m x 15m.