Unequal Error Protection Scheme Based on Joint Coding for Relay Systems

doi:10.13190/j.jbupt.2020-099

Journal of Beijing University of Posts and Telecommunications ›› 2021, Vol. 44 ›› Issue (1): 59-65.doi: 10.13190/j.jbupt.2020-099

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Unequal Error Protection Scheme Based on Joint Coding for Relay Systems

CHEN Chen, ZHOU Lin, CHEN Qi-wang, CHEN Yan, HE Yu-cheng

School of Information Science and Engineering, Huaqiao University, Xiamen 361021, China

Received:2020-07-29 Online:2021-02-28 Published:2021-09-30

Abstract

Abstract: In the mobile communication system with diversified information transmission,if the sources with different statistical characteristics and different importance are transmitted without difference,the energy resources would be wasted. Therefore,based on the characteristics of the source,an unequal error protection scheme combining joint source channel coding in relay system is proposed. The proposed scheme adopts different transmission strategies according to the source statistical characteristics and the importance:the high frequency information with low entropy and less importance is compressed to improve the transmission efficiency,and the low frequency information with more importance is coded once more in relay to provide more protection. At the receiver,a joint decoding method including multiple module iterations is designed to improve system performance by making full use of the different representation of the source information under different transmission strategies. Analysis and simulation show that compared with the traditional schemes,the proposed scheme has more than 1 dB performance gain under the same peak signal-to-ratio.

Key words: unequal error protection, relay cooperation, joint source channel coding, image transmission

CLC Number:

TN911.22

CHEN Chen, ZHOU Lin, CHEN Qi-wang, CHEN Yan, HE Yu-cheng. Unequal Error Protection Scheme Based on Joint Coding for Relay Systems[J]. Journal of Beijing University of Posts and Telecommunications, 2021, 44(1): 59-65.

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Unequal Error Protection Scheme Based on Joint Coding for Relay Systems

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