Simulation studies of underwater communication system in shallow oceanic channel

Underwater acoustic communications presents unique challenges that are being overcome with advances in signal processing algorithms and related hardware technologies. The accurate simulation and performance comparison of various algorithms is essential for building an optimized and robust communications system. We report results of a detailed simulation study of an underwater acoustic communications system using phase coherent modulation scheme. The aim of this study is to bring out the relative contributions of error control coding using Turbo codes and low probability of intercept features towards SNR gain and achieving the desired bit error rates for realistic environment scenarios. We also comment on the training sequence length requirement for linear and decision feedback equalization for LPI and nonLPI systems.