A novel spread spectrum underwater acoustic communication system for the inter-symbol interference reduction
by Yan Li; Ning Jia; Jianchun Huang; Biao Liu; Shengming Guo
International Journal of Computer Applications in Technology (IJCAT), Vol. 69, No. 4, 2022

Abstract: A novel spread spectrum Underwater Acoustic (UWA) communication system is proposed to suppress the Inter-Symbol Interference (ISI) caused by the long time-delay spread underwater acoustic multipath channels in this paper. The Interleaved Hybrid Spread Spectrum (IHSS) communication method is combined with M-ary code shift spread spectrum and interleaving method, which has an excellent communication performance when the time-delay spread of the UWA channels is larger than the period of pseudo-noise sequences in the spread spectrum system. The BER performance of the proposed system and the Conventional M-ary Code Shift Spread Spectrum underwater communication system (CMCSSS) is evaluated through computer simulations and the sea trial. The results demonstrate the proposed system can effectively suppress ISI and has a better communication quality.

Online publication date: Tue, 07-Mar-2023

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