2011 Volume E94.D Issue 12 Pages 2400-2408
The IEEE802.11ac task group has announced the use of a wider channel that extends the channel bandwidth to more than 80MHz. We present an experimental platform consisting of a baseband and a RF unit in a 2×2 MIMO-OFDM system for the wider channel and report its system performance results from a field experiment. The MIMO-OFDM transceiver in the baseband unit has been designed to detect real-time MIMO and provides a maximum data rate of 600Mbps. OFDM tends to cause high peak PAPR for wider channels and distorts the power amplifier performance in the RF unit. We have improved the non-linear distortion by optimizing the OFDM preamble and evaluated its performance by conducting a simulation integrated with baseband processing and a RF. In the field experiment, our platform tested the communication performance in a farm and a passage environment.
