On the performance of receive ZF MIMO broadcast systems with channel estimation errors

Chu Jung Yeh*, Li-Chun Wang, Jwo-Yuh Wu

*Corresponding author for this work

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

6 Scopus citations

Abstract

While the zero-forcing (ZF) transmit beamforming is a widely used technique for realizing multi-input multi-output (MIMO) broadcast transmissions, the ZF receiver combined with multiuser scheduling is an effective alternative that yields improved robustness against CSI mismatch caused by feedback link errors. In this paper we consider the practical scenario that channels are imperfectly estimated at the receiver. Our goal is to characterize the sum rate performance of the receive ZF MIMO broadcast systems under channel estimation errors. We derive analytic sum-rate expressions for both the uniform transmit power and transmit water-filling cases. Our analytic results characterize the sum-rate floor incurred by channel estimation errors. Numerical simulations are used to confirmed the analytic study.

Original languageEnglish
Title of host publication2011 IEEE International Conference on Communications, ICC 2011
DOIs
StatePublished - 2 Sep 2011
Event2011 IEEE International Conference on Communications, ICC 2011 - Kyoto, Japan
Duration: 5 Jun 20119 Jun 2011

Publication series

NameIEEE International Conference on Communications
ISSN (Print)0536-1486

Conference

Conference2011 IEEE International Conference on Communications, ICC 2011
CountryJapan
CityKyoto
Period5/06/119/06/11

Keywords

  • estimation errors
  • MIMO
  • MIMO broadcast systems
  • sum-rate analysis
  • zero-forcing receiver

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    Yeh, C. J., Wang, L-C., & Wu, J-Y. (2011). On the performance of receive ZF MIMO broadcast systems with channel estimation errors. In 2011 IEEE International Conference on Communications, ICC 2011 [5963042] (IEEE International Conference on Communications). https://doi.org/10.1109/icc.2011.5963042