EXIT-Chart-Aided Joint Source Coding, Channel Coding, and Modulation Design for Two-Way Relaying
EXIT-Chart-Aided Joint Source Coding, Channel Coding, and Modulation Design for Two-Way Relaying
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DOI：
10.1109/tvt.2013.2248766
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发表时间：
2013-02
影响因子：
6.8
通讯作者：
A. Aljohani;S. Ng;R. Maunder;L. Hanzo
中科院分区：
文献类型：
--
作者：
A. Aljohani;S. Ng;R. Maunder;L. Hanzo
在本文中，我们提出并研究了一个有吸引力的联合信源编码，信道编码和调制（JSCM）方案的双向中继系统。我们开始量化相应的双向中继信道的可实现的容量，然后提出低复杂度的源编码方案级联带宽和功率效率的编码调制方案。外部信息传输（EXIT）图被用来调查的联合源和信道解码器的解码收敛和整体系统设计。解码的源信号的质量使用误码率（BER）度量来量化。据发现，双向中继为基础的JSCM方案是能够实现一个组合的编码和中继增益为5.7 dB的传统的非合作JSCM方案时，在室外环境中的不相关的瑞利衰落信道通信。
In this paper, we have proposed and investigated an attractive joint source coding, channel coding, and modulation (JSCM) scheme for a two-way relaying system. We commence by quantifying the achievable capacity of the corresponding two-way relay channel before proposing low-complexity source coding schemes for concatenation with band-width-and power-efficient coded modulation schemes. Extrinsic information transfer (EXIT) charts are used to investigate the decoding convergence of the joint source and channel decoder and for the overall system design. The quality of the decoded source signals is quantified using the bit error ratio (BER) metric. It is found that the two-way-relay-based JSCM scheme is capable of attaining a combined coding and relaying gain of 5.7 dB over the conventional noncooperative JSCM scheme when communicating over uncorrelated Rayleigh fading channels in an outdoor environment.