Convolutional code design avoiding malignant codes in underwater optical communication systems
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Department of Weaponry Engineering, Naval University of Engineering, Wuhan 430033, China;
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Department of Weaponry, Bengbu Navy Non-commissioned Officers School, Bengbu 233011, China
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Corresponding author:
RAO Jiong-hui, rainman_rao@163.com
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Received Date:
2010-06-29
Accepted Date:
2010-07-17
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Abstract
In order to prevent laser sending a long "0" or "1" signal list,avoid communication system making infinite bit errors in underwater wireless optical communication systems,a new convolution encoding scheme was adopted.The encoding method was designed and Viterbi decoding theory was analyzed.The simulative demonstration of bit error rate performance was carried out.The field programmable gate array(FPGA)design of encoder was implemented with VHDL language.The bit error rates of encoded and uncoded system,the signal noise ratio demanded to attain the same bit error rate was received.The result show that this code can reduce the bit error rate of the system,improve communication reliability,and reduce the need of the signal noise ratio in underwater wireless optical communication systems.
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