An iteratively optimized linear coding scheme for correlated Gaussian channels with noisy feedback
An iteratively optimized linear coding scheme for correlated Gaussian channels with noisy feedback
复制标题
具有噪声反馈的相关高斯通道的迭代优化线性编码方案
DOI：
10.1109/allerton.2011.6120278
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
V. Balakrishnan
中科院分区：
文献类型：
--
作者：
Mayur Agrawal;D. Love;V. Balakrishnan
无噪声反馈信道的线性编码方案已经得到了很好的研究。这些方案已被证明对广泛的高斯噪声过程表现出有利的特性。然而，用于噪声反馈通道的线性代码的设计还很不发达。在这项工作中，推导了加性高斯白噪声反馈信道的最优线性码的解析表达式。此外，还获得了前向和反馈信道中具有相似噪声统计的通信系统的后处理信噪比的界限。对于任意前向和反馈噪声信道的一般情况，提出了一种迭代优化的线性编码方案。
Linear coding schemes for noiseless feedback channels have been well studied. These schemes have been shown to display favorable properties for a broad class of Gaussian noise processes. However, the design of linear codes for noisy feedback channels is much less developed. In this work, an analytical expression for the optimal linear code for the additive white Gaussian noise feedback channel is derived. Also, bounds are obtained on the post-processed signal-to-noise ratio for communication systems with similar noise statistics in the forward and the feedback channel. For the general case of arbitrary forward and feedback noisy channels, an iteratively optimized linear coding scheme is proposed.