Bit Error Rate due to Moving Transmitter in Passive Time Reversal Underwater Acoustic Communication

Abstract

Time spread due to the multipaths in an underwater acoustic channel induces inter symbol interference (ISI) which increases the bit error rate (BER) in underwater acoustic communications. The time reversal or phase conjugation process has been adopted to reduce the ISI due to multipath time spread. However, a recent study on passive time reversal process (PTRP) underwater acoustic communication has shown that the BER depends on the relative drift rate between the transmitter and the receiver. In this study, the BER is qualified as a function of transmitter movement distance.