OFDM Reference Design v14 - CSMA Benchmarks

Performance Tests

Peak Throughput

This test measures the peak throughput between two PCs connected via the OFDM Reference Design's CSMA application. The PCs use the OFDM/CSMA link as a wired-wireless bridge, emulating a point-to-point Ethernet link.

Methodology: this test is conducted using two WARP Kits (SISO Kit v1), with radios connected via coax cables with 60dB series attenuation. The FPGA boards are each connected via Ethernet to a MacBook laptop. The setup is illustrated below.

We use ​iperf for throughput testing. One MacBook runs an iperf server, the other runs the iperf client, using one of the following calls:

#For UDP tests:
iperf -c 10.0.0.1 -u -b 20M -l 1470 -t 30

#For TCP tests:
iperf -c 10.0.0.1 -l 1470 -t 30

Results: Throughput in Mbps, as reported by iperf:

Full Rate	TCP	UDP
QPSK	6.6	8.4
16-QAM	9.7	13.1

Packet Error Rate

Bit Error Rate