Design and analysis of low-complexity blind beam steering scheme for receive beamform

You Hsien Lin*, Ta Ko, Tsung Yu Tsai, Shao Ying Yeh, Terng-Yin Hsu

*Corresponding author for this work

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

1 Scopus citations

Abstract

The complexity of beamforming, such as complexity complex weighting and combining process, are extremely important for implementation. This work presents a low complexity time-domain statistic noise suppression and hierarchical beam search algorithm to improve performance in receivers. For SIMO-OFDM systems, the complexity of the hierarchical beam search algorithm is O(n 2log 2n). This work proposes a simple hierarchical beam search to find the best steering vector. Through performance evaluation, the BER performance is significantly improved with about 3dB under 10∧-5 BER in the case that L1=6 and L2=2 compared to that in the case L1=4 and L2=2. Besides, the BER performance is already quietly close to that achieved by the ideal beamform in the case of L1=6 and L2=4. This setting is a good choice which achieves a good tradeoff between the performance and the computational complexity. In addition, this algorithm is well-matched to different specifications.

Original languageEnglish
Title of host publication2012 21st Annual Wireless and Optical Communications Conference, WOCC 2012
Pages105-110
Number of pages6
DOIs
StatePublished - 29 May 2012
Event2012 21st Annual Wireless and Optical Communications Conference, WOCC 2012 - Kaohsiung, Taiwan
Duration: 19 Apr 201221 Apr 2012

Publication series

Name2012 21st Annual Wireless and Optical Communications Conference, WOCC 2012

Conference

Conference2012 21st Annual Wireless and Optical Communications Conference, WOCC 2012
CountryTaiwan
CityKaohsiung
Period19/04/1221/04/12

Keywords

  • angle of arrive (AoA)
  • digital beamforming (DBF)
  • steering vector
  • Uniform Linear Array (ULA)

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