1. benchmark_txrx.py
http://gnuradio.org/cgit/gnuradio.git/tree/gr-digital/examples/ofdm

./benchmark_txrx.py --tx-freq 2.485G --rx-freq 2.485G -t addr=192.168.10.2 -r addr=192.168.10.2 -v

- Just copy it to /gr-digital/examples/ofdm/, and run
- Tested using USRP2 + RFX2400, does not work with XCVR2450
- Quick example to setup a Tx/Rx node
- We can use *ONE* USRP2 to setup 
- We can use seperate Tx/Rx freq

2. FTW

See src/examples/ftw_ofdm_tx_uhd.py
./ftw_ofdm_tx_uhd.py -a addr=192.168.10.2 --tx-freq 5.18G -n 1 -W 20e6

- Tested using USRP2 + XCVR2450, and Wireshark