A sectorized beamspace adaptive diversity combiner for multipath environments

Ta-Sung Lee*, Zong Si Lee

*Corresponding author for this work

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

The beam diversity technique is effective in combating multipath fading in wireless communications. In a beam diversity system, multiple receiving branches are formed with multiple antenna beams with distinctive patterns. These beams are synthesized in such a fashion that the fading phenomena observed at different branches are nearly uncorrelated. The disadvantage of such a system is the lack of adaptivity for cochannel interference (CCI) suppression. In this paper, an adaptive beam diversity combiner is proposed for sectorized signal reception. The diversity branches are formed with several adaptive beamformers whose response patterns encompass an angular sector in the fleld-of-view of the receiver. With a set of judiciously chosen weight vectors, effective diversity combining can be achieved inside the sector, and out-of-sector CCI can be suppressed via nulling. Simulation results confirm the efficacy of the proposed scheme.

Original languageEnglish
Pages (from-to)1503-1510
Number of pages8
JournalIEEE Transactions on Vehicular Technology
Volume48
Issue number5
DOIs
StatePublished - 1 Dec 1999

Keywords

  • Adaptive antenna
  • Beamforming
  • Diversity combiner
  • Sector ization

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