Iterative Receiver in Time-Frequency Domain for Shallow Water Acoustic Channel

作者：Zhao Liang^*; Ge Jianhua

来源：Japanese Journal of Applied Physics, 2012, 51(3): 037301.

DOI：10.1143/JJAP.51.037301

Inter-symbol interference (ISI) caused by multi-path propagation, especially in shallow water channel, degrades the performance of underwater acoustic (UWA) communication systems. In this paper, we combine soft minimum mean squared error (MMSE) equalization and the serially concatenated trellis coded modulation (SCTCM) decoding to develop an iterative receiver in time-frequency domain (TFD) for underwater acoustic point to point communications. Based on sound speed profile (SSP) measured in the lake and finite-element ray (FER) tracing method (Bellhop), the shallow water channel is constructed to evaluate the performance of the proposed iterative receiver. The results suggest that the proposed iterative receiver can reduce the calculation complexity of the equalizer and obtain better performance using less receiving elements.

• 出版日期2012-3
• 单位西安电子科技大学