Adaptive beamforming schemes for SC-FDMA systems with insufficient cyclic prefix

Shiuan Wei Huang, Kuo Ching Fu, Yung Fang Chen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

When the duration of the cyclic prefix is shorter than that of the channel impulse response duration in single carrier-frequency division multiple access (SC-FDMA) systems, inter-symbol interference (ISI) and inter-carrier interference (ICI) will degrade the system performance. Previously, this problem was solved by a blind beamforming scheme with considering the effects of carrier frequency offsets (CFOs) based on the eigenanalysis in a batch mode [5]. In this paper, adaptive algorithms are proposed to find the beamforming weight vectors without using reference signals. The proposed adaptive algorithms show competitive performance compared to the previous proposed algorithm under the insufficient cyclic prefix (CP), the effects of CFOs, and the co-channel interference scenarios. The simulation results reveal that the proposed adaptive algorithms provide better performance than the previously proposed algorithm in higher mobility environments.

Original languageEnglish
Title of host publicationProceeding - COMNETSAT 2012
Subtitle of host publication2012 IEEE International Conference on Communication, Networks and Satellite
Pages50-54
Number of pages5
DOIs
StatePublished - 2012
Event2012 IEEE International Conference on Communication, Networks and Satellite, COMNETSAT 2012 - Bali, Indonesia
Duration: 12 Jul 201214 Jul 2012

Publication series

NameProceeding - COMNETSAT 2012: 2012 IEEE International Conference on Communication, Networks and Satellite

Conference

Conference2012 IEEE International Conference on Communication, Networks and Satellite, COMNETSAT 2012
Country/TerritoryIndonesia
CityBali
Period12/07/1214/07/12

Keywords

  • Antenna arrays
  • beamforming
  • interference cancellation
  • single carrier frequency division multiple access (SC-FDMA)

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