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arXiv 1102.3226cs.ITmath.IT
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一种新的Z-高斯认知干扰信道容量结果

A New Capacity Result for the Z-Gaussian Cognitive Interference Channel

Stefano Rini, Daniela Tuninetti, Natasha Devroye

摘要:

基于多天线广播信道的容量,提出了一种新的高斯认知干扰信道的外界估计方法。然后,它表明,对于Z通道,即,当次接收机没有受到干扰而主接收机受到强干扰时,所提出的外边界不仅是已知边界中最紧的,而且对于足够强的干扰实际上是可实现的。后者是一种新的容量结果,从数值评估来看,似乎可以推广到更大的(即,非Z)类高斯信道。

英文摘要:

This work proposes a novel outer bound for the Gaussian cognitive interference channel in strong interference at the primary receiver based on the capacity of a multi-antenna broadcast channel with degraded message set. It then shows that for the Z-channel, i.e., when the secondary receiver experiences no interference and the primary receiver experiences strong interference, the proposed outer bound not only is the tightest among known bounds but is actually achievable for sufficiently strong interference. The latter is a novel capacity result that from numerical evaluations appears to be generalizable to a larger (i.e., non-Z) class of Gaussian channels.

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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