On the Capacity and Degrees of Freedom Regions of Two-User MIMO Interference Channels With Limited Receiver Cooperation

被引:6
|
作者
Ashraphijuo, Mehdi [1 ]
Aggarwal, Vaneet [2 ,3 ]
Wang, Xiaodong [1 ,4 ]
机构
[1] Columbia Univ, Dept Elect Engn, New York, NY 10027 USA
[2] AT&T Labs Res, Bedminster, NJ 07921 USA
[3] Columbia Univ, New York, NY 10027 USA
[4] King Abdulaziz Univ, Jeddah 22254, Saudi Arabia
基金
美国国家科学基金会;
关键词
MIMO interference channel; limited receiver cooperation; capacity region; generalized degrees of freedom; Han-Kobayashi message splitting; GENERALIZED DEGREES; MITIGATION; NETWORKS;
D O I
10.1109/TIT.2014.2321753
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
This paper gives the approximate capacity region of a two-user multiple-input multiple-output (MIMO) interference channel with limited receiver cooperation, where the gap between the inner and outer bounds is in terms of the total number of receive antennas at the two receivers and is independent of the actual channel values. The approximate capacity region is then used to find the degrees of freedom region. For the special case of symmetric interference channels, we also find the amount of receiver cooperation in terms of the backhaul capacity beyond, which the degrees of freedom do not improve. Further, the generalized degrees of freedom is found for MIMO interference channels with equal number of antennas at all nodes. It is shown that the generalized degrees of freedom improves gradually from a W curve to a V curve with increase in cooperation in terms of the backhaul capacity.
引用
收藏
页码:4170 / 4196
页数:27
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