Journal
WIRELESS PERSONAL COMMUNICATIONS
Volume 36, Issue 4, Pages 387-401Publisher
SPRINGER
DOI: 10.1007/s11277-005-9007-4
Keywords
smart antennas; Wireless LANs; SDMA; multipath; interference
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This paper investigates the performance of a fixed Wireless LAN in which nodes are equipped with fully adaptive smart antennas. The considered smart antenna system is a uniform circular array of microstrip patch elements in which the weights are updated using the unconstrained LMS algorithm. The behavior of a new directional MAC protocol for spatial multiplexing is analyzed and compared with IEEE 802.11 DCF. The paper purpose is the evaluation of interference and multipath effects on SDMA, using realistic models for the channel and for the smart antenna system. The link model takes into account path loss, cochannel interference and multipath, using a modified Jakes model. Results show that the performance of the WLAN are strictly dependent on the interferer characteristics and on the angular spread of the channel.
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