The Reliability Function of Variable-Length Lossy Joint Source-Channel Coding With Feedback

被引：2
|
作者：
Truong, Lan V. [1 ]
Tan, Vincent Y. F. [2 ]
机构：
[1] NUS, Sch Comp, Dept Comp Sci, Singapore 119077, Singapore
[2] NUS, Dept Math, Dept Elect & Comp Engn, Singapore 119077, Singapore
来源：
IEEE TRANSACTIONS ON INFORMATION THEORY | 2019年 / 65卷 / 08期
关键词：
Variable-length codes; joint source-channel coding; feedback; reliability function;
D O I：
10.1109/TIT.2019.2911527
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
We consider transmission of discrete memoryless sources (DMSes) across discrete memoryless channels (DMCs) using variable-length lossy source-channel codes with feedback. The reliability function (optimum error exponent) is shown to be equal to max{0, B(1 - R(D)/C)},, where R(D) is the rate-distortion function of the source, B is the maximum relative entropy between output distributions of the DMC, and C is the Shannon capacity of the channel. We show that in this asymptotic regime, separate source-channel coding is, in fact, optimal.
引用
收藏
页码：5028 / 5042
页数：15
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