Adaptive mode switching in the MIMO broadcast channel

Chulhan Lee, Chan Byoung Chae, Sriram Vishwanath, Robert W. Heath

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

2 Citations (Scopus)

Abstract

This paper proposes an adaptive mode switching between single user and multi-user multiple input multiple output (MIMO) transmissions for Gaussian MIMO broadcast channels with partial channel state information at the transmitter. With full channel state information, it is known that multi-user transmission outperforms all other policies. With alternate channel state information available at the transmitter, it is not true that one transmission strategy always dominates the other. In particular, under some practical side information assumptions, there is instead a transition point - when the number of users is below this point, single user transmission outperforms multi-user transmission, and the reverse is true when the number of users exceeds this critical value. In this paper, we determine this mode switching point both analytically and numerically for a MIMO channel with transmit side correlation.

Original languageEnglish
Title of host publication2008 IEEE Radio and Wireless Symposium, RWS
Pages711-714
Number of pages4
DOIs
Publication statusPublished - 2008 Sep 9
Event2008 IEEE Radio and Wireless Symposium, RWS - Orlando, FL, United States
Duration: 2008 Jan 222008 Jan 24

Publication series

Name2008 IEEE Radio and Wireless Symposium, RWS

Other

Other2008 IEEE Radio and Wireless Symposium, RWS
CountryUnited States
CityOrlando, FL
Period08/1/2208/1/24

All Science Journal Classification (ASJC) codes

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

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  • Cite this

    Lee, C., Chae, C. B., Vishwanath, S., & Heath, R. W. (2008). Adaptive mode switching in the MIMO broadcast channel. In 2008 IEEE Radio and Wireless Symposium, RWS (pp. 711-714). [4463591] (2008 IEEE Radio and Wireless Symposium, RWS). https://doi.org/10.1109/RWS.2008.4463591