Maximising signal strength inside buildings for wireless LAN systems using OFDM

Author

Lawrey, Eric ; Kikkert, C.J.

Author_Institution

Electr. & Comput. Eng., James Cook Univ., Townsville, Qld., Australia

fYear

2000

fDate

2000

Firstpage

257

Lastpage

260

Abstract

Propagation inside buildings suffer from large shadowing and high multipath effects. This is a serious problem for Wireless Local Area Network (WLAN) systems. OFDM has a high multipath tolerance and this paper shows how this can be used to overcome the problems due to shadowing. OFDM allows a base station to transmit and receive the same signal at the same frequency from multiple locations, at a low cost and without the detrimental effects of Inter-Symbol Interference (ISI). The reduced shadowing and path loss allows: an increased system capacity for such a multi-transceiver WLAN cell, or a decrease in intercellular interference in a cellular WLAN

Keywords

OFDM modulation; UHF radio propagation; cellular radio; digital radio; indoor radio; interference suppression; losses; microwave propagation; multipath channels; radiofrequency interference; wireless LAN; ISI elimination; OFDM; WLAN systems; building interiors; cellular WLAN; indoor propagation; intercellular interference reduction; multi-transceiver WLAN cell; multipath effects; multipath tolerance; path loss reduction; shadowing; signal strength maximisation; system capacity improvement; wireless LAN systems; Delay; Femtocell networks; Intersymbol interference; OFDM; Optical transmitters; Physical layer; Radio transmitters; Repeaters; Shadow mapping; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2000 Asia-Pacific

Conference_Location

Sydney, NSW

Print_ISBN

0-7803-6435-X

Type

conf

DOI

10.1109/APMC.2000.925779

Filename

925779