Exploiting Doppler-diversity in flat, fast fading channels

We present the results of a simulation of a communication system using QPSK modulation over a frequency non-selective, fast fading channel. The presence of fast fading leads to the presence of a bit error probability floor in the performance curve. However, using a Doppler-diversity receiver, we show that it is possible to exploit the Doppler-diversity and thus reduce the BER floor significantly.