Study on pattern time delay shift coding scheme |
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Authors: | Jing-wei Yin Jun-ying Hui Yi-lin Wang Zhi-xiang Yao |
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Affiliation: | (1) College of Underwater Acoustic Eng., Harbin Engineering University, Harbin, 150001, China;(2) College of Information & Electric, Navy Engineering University, Wuhan, 430043, China |
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Abstract: | Pattern Time Delay Shift Coding (PDS) scheme is robust for underwater acoustic communication. The digital information are encoded in the time delay shift values of the Pattern, so the PDS scheme belongs to the Pulse Position Modulation (PPM). Several Patterns are selected for code division that the communication system could have a high ability to mitigate the inter-symbol interference (ISI) caused by multipath channel. Four communication channels work on the same time divided by different frequency, which lead to 1000bits/s of the data rate of communication. The simulation experiments show that the PDS system could adapt to many underwater acoustic channels for high data rate and high reliability. |
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Keywords: | pattern time delay shift coding underwater acoustic communication inter-symbol interference (ISI) |
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