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arXiv cs/0509078cs.ITmath.IT
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平稳高斯信道的反馈容量

On the Feedback Capacity of Stationary Gaussian Channels

Young-Han Kim

摘要:

带反馈的平稳加性高斯噪声信道的容量被表征为变分问题的解。为此,证明了最优反馈编码方案是平稳的。当专门用于一阶自回归移动平均噪声谱时,这种变分表征产生反馈能力的封闭形式的表达式。特别是,这个结果表明,著名的Schalkwijk-Kailath编码方案实现了一阶自回归移动平均高斯信道的反馈能力,解决了Butman,Schalkwijk-Tiernan,Wolfowitz,Ozarow,Ordentlich,Yang-Kavcic-Tatikonda等研究的一个长期存在的公开问题。

英文摘要:

The capacity of stationary additive Gaussian noise channels with feedback is characterized as the solution to a variational problem. Toward this end, it is proved that the optimal feedback coding scheme is stationary. When specialized to the first-order autoregressive moving-average noise spectrum, this variational characterization yields a closed-form expression for the feedback capacity. In particular, this result shows that the celebrated Schalkwijk--Kailath coding scheme achieves the feedback capacity for the first-order autoregressive moving-average Gaussian channel, resolving a long-standing open problem studied by Butman, Schalkwijk--Tiernan, Wolfowitz, Ozarow, Ordentlich, Yang--Kavcic--Tatikonda, and others.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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