Downlink SDMA for IEEE 802.11a/g: A Means for Improving Legacy Mobile Throughput Using a MultiAntenna Access Point

Conference: PIMRC 2005 - 16th Annual IEEE International Symposium on Personal Indoor and Mobile Radio Communications
09/11/2005 - 09/14/2005 at Berlin, Germany

Proceedings: PIMRC 2005

Pages: 5Language: englishTyp: PDF

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Kuzminskiy, Alexandr M.; Karimi, Hamid Reza (Bell Laboratories, Lucent Technologies, The Quadrant, Stonehill Green, Westlea, Swindon SN5 7DJ, UK)
Morgan, Dennis R. (Bell Laboratories, Lucent Technologies, 600-700 Mountain Avenue, Murray Hill, NJ, 07974-0636, USA)
Papadias, Constantinos B.; Avidor, Dan; Ling, Jonathan (Bell Laboratories, Lucent Technologies, 791 Holmdel-Keyport Rd., Holmdel, NJ, 07733-0400, USA)

We address the problem of downlink throughput improvement for IEEE 802.11a/g systems by using a modfied access point (AP) equipped with multiple antennas. The main restriction is that the standard terminals should not be modified in any way. An alternating time-offset space division multiple access (SDMA) solution is considered for a conference room scenario. A simulation is based on channel models approved by the IEEE 802.11 Standard Group and takes into account the main features of the IEEE 802.11a/g standard. It is demonstrated that a near doubling of downlink capacity can be achieved in a conference room environment.