Feasibility of interference alignment for the MIMO interference channel: the symmetric square case

被引：0

作者：

Bresler, Guy ^{[1
]}

Cartwright, Dustin ^{[2
]}

Tse, David ^{[1
,3
]}

机构：

[1] Univ Calif Berkeley, Dept EECS, Wireless Fdn, Berkeley, CA 94720 USA

[2] Inst Mittag Leffler, SE-18260 Djursholm, Sweden

[3] Univ Calif Berkeley, Dept EECS, Wireless Fdn, Berkeley, CA 94720 USA

来源：

2011 IEEE INFORMATION THEORY WORKSHOP (ITW) | 2011年

关键词：

FREEDOM;

D O I：

暂无

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 ;

摘要：

Determining the feasibility conditions for vector space interference alignment in the K-user MIMO interference channel with constant channel coefficients has attracted much recent attention yet remains unsolved. The main result of this paper is restricted to the symmetric square case where all transmitters and receivers have N antennas, and each user desires d transmit dimensions. We prove that alignment is possible if and only if the number of antennas satisfies N >= d (K + 1) = 2. We also show a necessary condition for feasibility of alignment with arbitrary system parameters. An algebraic geometry approach is central to the results.

引用

页数：5