Interference alignment with limited feedback for two-cell interfering MIMO-MAC

Namyoon Lee, Wonjae Shin, Robert W. Heath, Bruno Clerckx

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

34 Citations (Scopus)

Abstract

In this paper, we consider a two-cell interfering multiple-input multiple-output multiple access channel (MIMOMAC). We first investigate the multiplexing gain of such channel when users have perfect channel state information at the transmitter (CSIT) by exploiting an interference alignment scheme. In addition, we propose a quantized transmit beamforming vector feedback method for the interference alignment in the limited feedback system. On the basis of the proposed feedback framework, we analyze the rate gap loss and it is shown that in order to keep the same multiplexing gain with the case of perfect CSIT, the number of feedback bits per receiver should be increased linearly with the SNR in dB scale. Throughout the simulation results, it is shown that the sum-rate performance coincides with the derived results.

Original languageEnglish
Title of host publication2012 International Symposium on Wireless Communication Systems, ISWCS 2012 - Proceedings
Pages566-570
Number of pages5
DOIs
Publication statusPublished - 2012
Event2012 9th International Symposium on Wireless Communication Systems, ISWCS 2012 - Paris, France
Duration: 2012 Aug 282012 Aug 31

Publication series

NameProceedings of the International Symposium on Wireless Communication Systems
ISSN (Print)2154-0217
ISSN (Electronic)2154-0225

Other

Other2012 9th International Symposium on Wireless Communication Systems, ISWCS 2012
CountryFrance
CityParis
Period12/8/2812/8/31

ASJC Scopus subject areas

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

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  • Cite this

    Lee, N., Shin, W., Heath, R. W., & Clerckx, B. (2012). Interference alignment with limited feedback for two-cell interfering MIMO-MAC. In 2012 International Symposium on Wireless Communication Systems, ISWCS 2012 - Proceedings (pp. 566-570). [6328431] (Proceedings of the International Symposium on Wireless Communication Systems). https://doi.org/10.1109/ISWCS.2012.6328431