A Degrees-of-Freedom-Achieving Scheme for the Temporally Correlated MIMO Interference Channel With Delayed CSIT

被引：1

作者：

Rezaee, Mohsen ^{[1
]}

Schreier, Peter J. ^{[2
]}

机构：

[1] Iran Telecommun Res Ctr, Tehran 141553961, Iran

[2] Paderborn Univ, Signal & Syst Theory Grp, D-33098 Paderborn, Germany

来源：

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | 2018年 / 17卷 / 08期

关键词：

MIMO; interference channels; channel state information; multiuser channels; MIXED CSIT; X-CHANNEL; REGION; CAPACITY; NETWORKS; BOUNDS;

D O I：

10.1109/TWC.2018.2843345

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A simple scheme is proposed to achieve the optimal degrees of freedom (DoF) of the temporally correlated two-user multiple-input-multiple-output interference channel with delayed channel state information at the transmitter (CSIT). The delayed CSIT is exploited for temporal alignment at the transmitters and spatial zero-forcing of interference at the receivers. The transmitters estimate the current CSIT using perfect delayed CSIT. For most antenna configurations, the proposed scheme achieves the optimal DoF-region of this channel by precoding (resp. decoding) over a finite number of time slots at each transmitter (resp. receiver). This is an improvement over existing achievable methods, which require infinite channel extensions (hence, infinite decoding delay) and involve complicated encoding and decoding procedures.

引用

页码：5397 / 5408

页数：12

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