Exact BER analysis for M-QAM modulation with transmit beamforming under channel prediction errors

Eduarde Martos-Naya, José F. Paris, Unai Fernández-Plazaola, Andrea J. Goldsmith

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

Significant throughput improvements can be obtained in multiple-input multiple-output (MIMO) fading channels by merging beamforming at the transmitter and maximal ratio combining (MRC) at the receiver. In general, accurate channel state information (CSI) is required to achieve these performance gains. In this paper, we analyze the impact of channel prediction error on the bit error rate (BER) of combined beamforming and MRC in slow Rayleigh fading channels. Exact closed-form BER expressions are obtained in terms of elementary functions. Numerical results show that imperfect CSI causes little BER degradation using channel prediction of moderate complexity.

Original languageEnglish (US)
Article number4657309
Pages (from-to)3674-3678
Number of pages5
JournalIEEE Transactions on Wireless Communications
Volume7
Issue number10
DOIs
StatePublished - Oct 2008
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

Keywords

  • Beamforming
  • Bit error rate (BER)
  • Channel prediction
  • Imperfect channel state information (ICSI)
  • Maximal ratio combining (MRC)
  • Multiple input multiple output (MIMO) systems

Fingerprint

Dive into the research topics of 'Exact BER analysis for M-QAM modulation with transmit beamforming under channel prediction errors'. Together they form a unique fingerprint.

Cite this