Downlink spatial division multiple access (SDMA) optimization of smart antennas by phase-amplitude perturbations based on memetic algorithms

Chao Hsing Hsu, Wen-Jye Shyr, Chi Fei Wu, Pao Hua Chou

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

In this paper, a novel method based on the memetic algorithm for downlink Spatial Division Multiple Access (SDMA) optimization technique of smart antennas by is proposed. Via the phase-amplitude perturbation method, the radiation pattern formulas available for searching optimal solutions are deduced to search the optimal weighting vector of the array factor of a smart antenna. In a smart antenna system, one user's signal must be considered as other users' interfering signal. An optimal radiation pattern of a smart antenna can not only adjustably suppress interferers by placing nulls at the directions of the interfering sources but also provide a maximum main lobe in the direction of the desired signals at the same time, i.e., to maximize the Signal to Interference Ratio (SIR). In order to achieve this goal, a new convergent method referred as the two-way convergent method for memetic algorithms is proposed. The optimal radiation pattern design of downlink smart antennas can be achieve Spatial Division Multiple Access (SDMA) optimization by using the phase-amplitude perturbation method.

Original languageEnglish
Title of host publicationSecond International Conference on Innovative Computing, Information and Control, ICICIC 2007
DOIs
Publication statusPublished - 2008 Feb 18
Event2nd International Conference on Innovative Computing, Information and Control, ICICIC 2007 - Kumamoto, Japan
Duration: 2007 Sep 52007 Sep 7

Other

Other2nd International Conference on Innovative Computing, Information and Control, ICICIC 2007
CountryJapan
CityKumamoto
Period07-09-0507-09-07

Fingerprint

Smart antennas
Directional patterns (antenna)

All Science Journal Classification (ASJC) codes

  • Computer Science(all)
  • Mechanical Engineering

Cite this

Hsu, C. H., Shyr, W-J., Wu, C. F., & Chou, P. H. (2008). Downlink spatial division multiple access (SDMA) optimization of smart antennas by phase-amplitude perturbations based on memetic algorithms. In Second International Conference on Innovative Computing, Information and Control, ICICIC 2007 [4427714] https://doi.org/10.1109/ICICIC.2007.392
Hsu, Chao Hsing ; Shyr, Wen-Jye ; Wu, Chi Fei ; Chou, Pao Hua. / Downlink spatial division multiple access (SDMA) optimization of smart antennas by phase-amplitude perturbations based on memetic algorithms. Second International Conference on Innovative Computing, Information and Control, ICICIC 2007. 2008.
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Hsu, CH, Shyr, W-J, Wu, CF & Chou, PH 2008, Downlink spatial division multiple access (SDMA) optimization of smart antennas by phase-amplitude perturbations based on memetic algorithms. in Second International Conference on Innovative Computing, Information and Control, ICICIC 2007., 4427714, 2nd International Conference on Innovative Computing, Information and Control, ICICIC 2007, Kumamoto, Japan, 07-09-05. https://doi.org/10.1109/ICICIC.2007.392

Downlink spatial division multiple access (SDMA) optimization of smart antennas by phase-amplitude perturbations based on memetic algorithms. / Hsu, Chao Hsing; Shyr, Wen-Jye; Wu, Chi Fei; Chou, Pao Hua.

Second International Conference on Innovative Computing, Information and Control, ICICIC 2007. 2008. 4427714.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Hsu CH, Shyr W-J, Wu CF, Chou PH. Downlink spatial division multiple access (SDMA) optimization of smart antennas by phase-amplitude perturbations based on memetic algorithms. In Second International Conference on Innovative Computing, Information and Control, ICICIC 2007. 2008. 4427714 https://doi.org/10.1109/ICICIC.2007.392