首页> 外文会议>European Signal Processing Conference(EUSIPCO 2005); 20050904-08; Antalya(TK) >ITERATIVE SOURCE CODED MODULATION: EXIT CHARTS, COMPLEXITY COMPARISONS AND NEW INDEX ASSIGNMENTS
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ITERATIVE SOURCE CODED MODULATION: EXIT CHARTS, COMPLEXITY COMPARISONS AND NEW INDEX ASSIGNMENTS

机译:迭代源编码调制:出口图,复杂度比较和新指数分配

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Iterative source coded modulation (ISCM) improves the error concealment for source codec parameters without increasing the transmitted bit rate by combining iterative demodulation of higher order modulations and the usage of residual source redundancy in a Turbo process. In this paper we present the enhanced capabilities of ISCM when novel index assignments are applied. A doubling of the previously achievable logarithmic gains [1] is possible. Furthermore, the convergence properties of ISCM are analyzed by EXIT charts and the computational complexity is compared to a rate-1 iterative source-channel decoding (ISCD) system [2]. ISCM exhibits a competitive performance in relation to an equally complex ISCD system.
机译:迭代源编码调制(ISCM)通过结合更高阶调制的迭代解调和Turbo过程中剩余源冗余的使用,在不增加传输比特率的情况下改善了源编解码器参数的错误隐藏。在本文中,我们介绍了应用新型索引分配时ISCM的增强功能。可以将以前可实现的对数增益[1]加倍。此外,通过EXIT图分析了ISCM的收敛特性,并将计算复杂度与速率1迭代源信道解码(ISCD)系统进行了比较[2]。与同样复杂的ISCD系统相比,ISCM具有竞争优势。

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