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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 8 — Apr. 18, 2005
  • pp: 3000–3014

Optimization of spot pattern in indoor diffuse optical wireless local area networks

Damon W. K. Wong, George C. K. Chen, and Jianping Yao  »View Author Affiliations

Optics Express, Vol. 13, Issue 8, pp. 3000-3014 (2005)

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In this paper, a simulated annealing (SA) algorithm is proposed to be used in the optimization of the spot pattern for the indoor diffuse optical wireless network application. The channel response is analyzed using conventional grid-based patterns and a field of view (FOV) of 30° is found to give a good performance balance in the uniformity of the received power distribution and multipath dispersion. Using the algorithm to determine the spot pattern for the minimum standard deviation of the received power, an improvement of more than 85% is realized. To optimize the spot pattern at 30° FOV, a merit function is incorporated into the algorithm for two parameters, and the SA algorithm is run to obtain optimized spot patterns for both a 4.5m and 6m extent of the spot pattern. Various weights are used, and a performance improvement of 39% and 78% is observed for the 4.5m and 6m spot pattern sizes respectively which shows that the approach can be used to effectively optimize the spot pattern in the indoor optical wireless application.

© 2005 Optical Society of America

OCIS Codes
(060.4250) Fiber optics and optical communications : Networks
(060.4510) Fiber optics and optical communications : Optical communications

ToC Category:
Research Papers

Original Manuscript: January 19, 2005
Revised Manuscript: March 27, 2005
Published: April 18, 2005

Damon W. K. Wong, George Chen, and Jianping Yao, "Optimization of spot pattern in indoor diffuse optical wireless local area networks," Opt. Express 13, 3000-3014 (2005)

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