Hybrid beamforming scheme for CDMA systems to overcome the insufficient pilot power problem in correlated SIMO channels

Young Kwan Choi, Dongku Kim

Research output: Contribution to journalArticle


A hybrid beamformer composed of a direction-of-arrival (DOA) based scheme and maximal ratio combining (MRC) is proposed to overcome the degradation caused by inaccurate channel estimation due to insufficient pilot power, which happens in conventional single-input, multiple-output (SIMO) Code Division Multiple Access (CDMA) reverse link. The proposed scheme can provide more accurate channel estimation and interference reduction at the expense of diversity gain in the spatially correlated SIMO channel. As a result, the hybrid scheme outperforms conventional MRC beamformers for six or more antennas in the channel environment, in which the angle-of-spread (AOS) is within 30°.

Original languageEnglish
Pages (from-to)1303-1306
Number of pages4
JournalIEICE Transactions on Communications
Issue number3
Publication statusPublished - 2005 Jan 1


All Science Journal Classification (ASJC) codes

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

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