Variable-length Coding Error Exponents for the AWGN Channel with Noisy Feedback at Zero-Rate

被引：0
|
作者：
Palacio-Baus, Kenneth [1 ,2 ]
Devroye, Natasha [1 ]
机构：
[1] Univ Illinois, Chicago, IL 60607 USA
[2] Univ Cuenca, Cuenca, Ecuador
来源：
2019 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY (ISIT) | 2019年
基金：
美国国家科学基金会;
关键词：
GAUSSIAN-CHANNEL;
D O I：
10.1109/isit.2019.8849578
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
A one-way additive white Gaussian noise (AWGN) channel with active feedback sent over another AWGN feedback channel is considered. Achievable error exponents are presented in the finite message / zero-rate regime for a variable length coding (VLC) scheme. This coding scheme uses a form of round-robin scheduling of messages, and a simplex-based feedback code to obtain reliable feedback and remain synchronized, despite the noise in the feedback link. Our results show that this new VLC scheme under an almost-sure power constraint achieves an error exponent similar to an achievable exponent attained using a fixed block length scheme under a much more relaxed expected block power constraint, and is larger than that achieved by schemes without feedback.
引用
收藏
页码：2254 / 2258
页数：5
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