Variable forgetting factor RLS algorithm for mobile single carrier SIMO underwater acoustic communication

Xiaochen Guo; Youwen Zhang; Wei Zheng

doi:10.1117/12.2674104

6 April 2023 Variable forgetting factor RLS algorithm for mobile single carrier SIMO underwater acoustic communication

Xiaochen Guo, Youwen Zhang, Wei Zheng

Proceedings Volume 12615, International Conference on Signal Processing and Communication Technology (SPCT 2022); 1261519 (2023) https://doi.org/10.1117/12.2674104
Event: International Conference on Signal Processing and Communication Technology (SPCT 2022), 2022, Harbin, China

Abstract

In mobile underwater acoustic (UWA) communication, serious Doppler effects will deteriorate the performance of UWA communication system. The traditional narrowband receiver based on phase-locked loop (PLL) technology cannot handle the received signal experienced wideband Doppler effects. In this paper, we propose a new receiver structure to eliminate the wideband Doppler effect and enhance the SER performance with a receiver array. Firstly, we utilize an adaptive pre-combiner to reduce the number of receiver channels, which leads to a lower complexity receiver. Secondly, a variable forgetting factor RLS (VFF-RLS) algorithm instead of the conventional RLS is used to estimate the time-varying channel impulse response (CIR). Experimental results show that improved performance can be achieved by proposed receiver with the VFF-RLS algorithm compared to that of receiver with the conventional RLS algorithm.

Citation Download Citation

Xiaochen Guo, Youwen Zhang, and Wei Zheng "Variable forgetting factor RLS algorithm for mobile single carrier SIMO underwater acoustic communication", Proc. SPIE 12615, International Conference on Signal Processing and Communication Technology (SPCT 2022), 1261519 (6 April 2023); https://doi.org/10.1117/12.2674104

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