DocumentCode :
1824215
Title :
Performance analysis of switched-sector antennas for indoor wireless LANs
Author :
Pesik, L.J. ; Beach, M.A. ; Allen, B.H.
Author_Institution :
Centre for Commun. Res., Bristol Univ., UK
fYear :
2001
fDate :
2001
Firstpage :
30
Lastpage :
34
Abstract :
Given the potential market for wireless LAN (WLAN) technology, capacity within the available 2 and 5 GHz frequency bands is likely to fall short of market demands. Multiple-sector antenna arrays are known to be able to provide capacity enhancement by means of interference reduction through spatial filtering. In this paper, the performance of an eight-element circular array acting as an Access Point (AP) in indoor wireless LAN environments is analysed. Spatial-temporal channel data used within the analysis were obtained from physical measurements within numerous indoor environments using a state-of-the-art wideband vector signal analyser. Performance analysis of the array employing a switched-sector controller within the Hiperlan/2 standard is appraised in terms of carrier-to-interference (C/I) ratios. Results show that an isolation of up to 15dB can be achieved between the two polarisations, by means of using an antenna array at the AP. It is shown that 54% of the time, 2 users per timeslot can be supported by the system
Keywords :
adaptive antenna arrays; channel capacity; indoor radio; interference suppression; microwave antenna arrays; space-time adaptive processing; wireless LAN; 5.2 GHz; Hiperlan/2 standard; access point; carrier-to-interference ratios; channel capacity; eight-element circular array; indoor wireless LANs; interference reduction; mobile communications; multiple-sector antenna arrays; performance analysis; polarisation isolation; smart antenna array applications; space-time characteristics; spatial division multiple access; spatial filtering; spatial-temporal channel data; switched-sector antennas; switched-sector controller; wideband vector signal analyser; wideband-vector channel sounder; Antenna arrays; Appraisal; Filtering; Frequency; Indoor environments; Interference; Performance analysis; Signal analysis; Wideband; Wireless LAN;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
High Frequency Postgraduate Student Colloquium, 2001. 6th IEEE
Conference_Location :
Cardiff
Print_ISBN :
0-7803-7118-6
Type :
conf
DOI :
10.1109/HFPSC.2001.962155
Filename :
962155
Link To Document :
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