Multiple Descriptions with Feed-forward: A Single-letter Achievable Rate Region.

被引：2
|
作者：
Venkataramanan, Ramji [1 ]
Pradhan, S. Sandeep [1 ]
机构：
[1] Univ Michigan, Dept EECS, Ann Arbor, MI 48105 USA
来源：
2008 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY PROCEEDINGS, VOLS 1-6 | 2008年
关键词：
D O I：
10.1109/ISIT.2008.4595075
中图分类号：
TP301 [理论、方法];
学科分类号：
081202 ;
摘要：
The two-channel multiple descriptions problem for an i.i.d source, with feed-forward to one or both side-decoders is considered. A single-letter achievable rate-region is derived; it enlarges the best known rate-region for multiple descriptions without feed-forward. The proof of the result uses a block-Markov superposition source coding strategy. In point-to-point source coding, feed-forward does not decrease the rate-distortion function of an i.i.d source. In contrast, an example is provided to show that the derived region can be larger than the optimal multiple description rate region without feed-forward.
引用
收藏
页码：692 / 696
页数：5
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