Analysis of partial FFT demodulation for doppler distorted OFDM signals

Accurate time scale compensation is a problem of significance for underwater acoustic channels. Using our proposed partial FFT Demodulation technique, we consider two algorithms for fast and accurate data detection over time scale distorted channels. We present a theoretical analysis to characterize the performance of these algorithms and determine the optimal values of their key parameters. Our analysis supports the observed performance trends and validates the performance gains of partial FFT demodulation.