Joint MMSE precoder and decoder design for downlink multiuser MIMO systems with arbitrary transmit power constraints

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A novel unified approach to deal with arbitrary transmitted power constraints for designing jointly the MMSE precoders and decoders in downlink multiuser MIMO systems is developed. This work is an extension of the iterative approach developed in [lJ for the total power constraint. An explicit expression relating Lagrange multipliers with the per-user constraint can be obtained using the proposed approach to mitigate the time consuming root searching for the Lagrange multipliers in [1]. Moreover, the explicit expression allows the MMSE solution subject to arbitrary transmit power constraints. In this paper, total, per-user, per-antenna, and peak power constraints are formulated in under the same format and solved using the proposed approach. It is shown in some two-user numerical examples that the raw BER performance obtained from the practical per-antenna power constraint is similar to those of the per-user and total power constraints and is 1-1.5 dB better than that of the peak power constraint.

Original languageEnglish (US)
Title of host publication2009 IEEE Sarnoff Symposium, SARNOFF 2009 - Conference Proceedings
DOIs
StatePublished - 2009
Event2009 IEEE Sarnoff Symposium, SARNOFF 2009 - Princeton, NJ, United States
Duration: Mar 30 2009Apr 1 2009

Other

Other2009 IEEE Sarnoff Symposium, SARNOFF 2009
CountryUnited States
CityPrinceton, NJ
Period3/30/094/1/09

Fingerprint

Lagrange multipliers
MIMO systems
Antennas
multiplier

Keywords

  • Downlink multiuser MIMO
  • Joint MMSE precoder and decoder
  • Per-antenna power constraint

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Communication

Cite this

Joint MMSE precoder and decoder design for downlink multiuser MIMO systems with arbitrary transmit power constraints. / Lu, I-Tai.

2009 IEEE Sarnoff Symposium, SARNOFF 2009 - Conference Proceedings. 2009. 4850334.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Lu, I-T 2009, Joint MMSE precoder and decoder design for downlink multiuser MIMO systems with arbitrary transmit power constraints. in 2009 IEEE Sarnoff Symposium, SARNOFF 2009 - Conference Proceedings., 4850334, 2009 IEEE Sarnoff Symposium, SARNOFF 2009, Princeton, NJ, United States, 3/30/09. https://doi.org/10.1109/SARNOF.2009.4850334
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