Optimal Access Point Placement in Simultaneous Broadcast OFDM for Public Access Wireless LAN

Mari KOBAYASHI  Shinichiro HARUYAMA  Ryuji KOHNO  Masao NAKAGAWA  

Publication
IEICE TRANSACTIONS on Communications   Vol.E85-B   No.10   pp.1978-1986
Publication Date: 2002/10/01
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Mobile Multimedia Communications)
Category: 
Keyword: 
access point,  OFDM,  simulated annealing,  wireless LAN,  

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Summary: 
This paper investigates the problem of finding the optimal access point placement in simultaneous broadcast system using orthogonal frequency division multiplexing (OFDM) for public access wireless LAN with micrometer or millimeter frequency band. We define our design criteria such that the quality of service is provided uniformly throughout a given service area. The optimal access point placement with a uniform quality of service was obtained by setting the cost function as the combination of a standard deviation of BER and the average of BER in a very fast simulated annealing algorithm. We applied the algorithm to the cases of fixed and mobile terminals, and obtained optimal access point placement results for both cases.