Mitigating Phase Noise Effect in OFDM System Using Partial IFFT/FFT and Adaptive Filtering

摘要

Orthogonal Frequency Division Multiplexing (OFDM) is an attractive technique for achieving high-bit-rate wireless communications. The performance of OFDM is severely affected by the nonlinearity of high-power amplifier at the transmitter end and the phase noise of the oscillator. We introduced partial IFFT/FFT and adaptive filtering to reduce the phase noise effect in OFDM. Using a few more oscillators besides significant gain the complexity decreases a bit more.