OFDM Receiver with Parameterized External Interference Cancellation

Underwater acoustic communication channels are prone to external interference from various sources, such as the interference from marine animals, human activities and sonar operations. This chapter focuses on explicit mitigation of an external interference with a certain time duration and bandwidth. With the parameterized interference model, an iterative orthogonal frequency‐division multiplexing (OFDM) receiver with interference cancellation is designed to perform data processing and interference estimation/cancellation iteratively. The chapter talks about the parameterization method that represents an external interference via a number of parameters. It presents an OFDM receiver, where OFDM receiver decoding is performed with interference estimation and cancellation iteratively. The chapter contains simulation and experimental (Atlantic Undersea Test and Evaluation Center (AUTEC)10 and SPACE08) results, that validate the performance of the iterative receiver.