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arXiv 0905.1537cs.ITmath.IT
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平行高斯干扰信道的可分性

On the Separability of Parallel Gaussian Interference Channels

Sang Won Choi, Sae-Young Chung

摘要:

本文研究了平行高斯干扰信道(PGIC)中的可分性。本文将Sung \emph{et al.}关于单侧PGIC(OPGIC)的可分性结果推广到双侧PGIC(TPGIC).具体来说,对于强和混合TPGIC,我们证明了分离的必要和充分条件。为此,我们证明了对角协方差矩阵是强混合TPGIC的和率最优。

英文摘要:

The separability in parallel Gaussian interference channels (PGICs) is studied in this paper. We generalize the separability results in one-sided PGICs (OPGICs) by Sung \emph{et al.} to two-sided PGICs (TPGICs). Specifically, for strong and mixed TPGICs, we show necessary and sufficient conditions for the separability. For this, we show diagonal covariance matrices are sum-rate optimal for strong and mixed TPGICs.

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