MSE duality for multi-user MIMO relay system

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

Research output: Contribution to journalArticle

3 Citations (Scopus)


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.

Original languageEnglish
Article number6313572
Pages (from-to)1748-1751
Number of pages4
JournalIEEE Communications Letters
Issue number11
Publication statusPublished - 2012

All Science Journal Classification (ASJC) codes

  • Modelling and Simulation
  • Computer Science Applications
  • Electrical and Electronic Engineering

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