QoS constrained power minimization in the multiple stream MIMO broadcast channel

被引：3

作者：

Gonzalez-Coma, Jose P. ^{[1
]}

Joham, Michael ^{[2
]}

Castro, Paula M. ^{[1
]}

Castedo, Luis ^{[1
]}

机构：

[1] Univ A Coruna, CITIC, Campus Elvina S-N, La Coruna 15071, Spain

[2] Tech Univ Munich, Dept Elect & Comp Engn, Theresienstr 90, D-80333 Munich, Germany

来源：

SIGNAL PROCESSING | 2018年 / 143卷

关键词：

Multiple-Input Single-Output; Broadcast channel; Imperfect CSI; QoS constraints; Multiple stream; MMSE TRANSCEIVER OPTIMIZATION; DOWNLINK; DUALITY; SYSTEMS;

D O I：

10.1016/j.sigpro.2017.08.015

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：

This work addresses the design of optimal linear transmit filters for the Multiple Input-Multiple Output (MIMO) Broadcast Channel (BC) when several spatial streams are allocated to each user. We further consider that the Channel State Information (CSI) is perfect at the receivers but is only partial at the transmitter. A statistical model for the partial CSI is assumed and exploited for the filter design. The relationship between average rate and average Mean Square Error (MSE) is studied to determine the optimal way to distribute the per-user rates among the streams. Finally, the feasible average sum-MSE (sMSE) region is studied and the impact of the CSI uncertainty over the overall system performance is evaluated. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：48 / 55

页数：8

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