Interference alignment and spatial degrees of freedom for the K user interference channel

被引：91

作者：

Cadambe, Viveck R. ^{[1
]}

Jafar, Syed A. ^{[1
]}

机构：

[1] Univ Calif Irvine, Irvine, CA 92697 USA

来源：

2008 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, PROCEEDINGS, VOLS 1-13 | 2008年

关键词：

D O I：

10.1109/ICC.2008.190

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

We show that the sum capacity of the K user frequency selective (or time-varying) interference channel is C(SNR) = (K/2) log(SNR) + o(log(SNR)) meaning that the channel has a total of K/2 degrees of freedom per orthogonal time and frequency dimension. Linear schemes of interference alignment and zero forcing suffice to achieve all the degrees of freedom and multi-user detection is not required.

引用

页码：971 / 975

页数：5

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