MSE Duality for Multi-User MIMO Relay System

Author

Jang, Seunghun ; Cho, Young-Min ; Yang, Janghoon ; Kim, Dong Ku

Author_Institution

Sch. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea

Volume

16

Issue

11

fYear

2012

fDate

11/1/2012 12:00:00 AM

Firstpage

1748

Lastpage

1751

Abstract

This paper shows how uplink (UL)-downlink (DL) mean square error (MSE) duality holds in a single relay aided multi-user multiple-input multiple-output (MU-MIMO) system. Specifically, it is shown that the MSE duality holds for three levels of MSE which are sum-MSE (SMSE), per user MSE, and per stream MSE. For each case of duality level, we consider both total power constraint and separate power constraint. We also provide a conversion method which transforms a given transceiver and scale factor in DL to equivalent ones in UL for each case of duality level and each case of power constraint.

Keywords

MIMO systems; mean square error methods; multi-access systems; radio transceivers; MSE duality; multiuser MIMO relay system; multiuser multiple-input multiple-output system; per stream MSE; per user MSE; power constraint; scale factor; sum-MSE; transceiver; uplink downlink mean square error duality; MIMO; Power demand; Relays; Signal to noise ratio; Transceivers; Vectors; MIMO; mean square error; relay;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2012.091712.121143

Filename

6313572