Jointly optimized multiuser beamforming for the MIMO broadcast channel with limited feedback

David Mazzarese, Chan Byoung Chae, Robert W. Heath

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

4 Citations (Scopus)

Abstract

This paper considers the joint optimization of the transmitter beamforming filters and receiver combining filters for the multiple-input multiple-output (MIMO) broadcast channel. A low-complexity iterative algorithm to compute the filters is proposed and then a closed-form expression of the filters for the downlink with two transmit antennas is derived, avoiding the need for iterative computation in this case. To enable practical implementation, a new limited feedback algorithm is proposed that exploits the channel structure in the closed form solution, and is independent of the number of receive antennas. Performance is evaluated by Monte Carlo simulations as a function of the amount of feedback. With two receive antennas, the proposed method performs close to the sum capacity of the MIMO broadcast channel, without the need for multiuser diversity and with only limited feedback.

Original languageEnglish
Title of host publication18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'07
DOIs
Publication statusPublished - 2007
Event18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'07 - Athens, Greece
Duration: 2007 Sep 32007 Sep 7

Publication series

NameIEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC

Other

Other18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'07
CountryGreece
CityAthens
Period07/9/307/9/7

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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    Mazzarese, D., Chae, C. B., & Heath, R. W. (2007). Jointly optimized multiuser beamforming for the MIMO broadcast channel with limited feedback. In 18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'07 [4394188] (IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC). https://doi.org/10.1109/PIMRC.2007.4394188