Title :
Downlink SDMA for legacy IEEE 802.11a/g mobile stations: acknowledgement recovery and channel estimation
Author :
Kuzminskiy, Alexandr M. ; Karimi, Hamid Reza ; Papadias, Constantinos B.
Author_Institution :
Lucent Technol., Bell Labs., Swindon, UK
Abstract :
We address the problem of downlink throughput improvement for IEEE 802.11a/g systems by using a modified access point (AP) equipped with multiple antennas. The main restriction is that standard terminals should not be modified in any way. An alternating time-offset space division multiple access (SDMA) solution is proposed to overcome restrictions imposed by the legacy terminals requirement. Simulations based on the IEEE 802.11 channel models demonstrate that a near doubling of downlink capacity can be achieved in a conference room environment.
Keywords :
IEEE standards; channel capacity; channel estimation; mobile radio; radio links; space division multiple access; telecommunication standards; telecommunication terminals; wireless LAN; IEEE 802.11a; IEEE 802.11g system; access point; acknowledgement recovery; channel estimation; conference room environment; downlink capacity; mobile station; multiple antenna; space division multiple access; standard terminal; time-offset SDMA; AWGN; Channel estimation; Downlink; Multiaccess communication; Receiving antennas; Signal processing; Throughput; Transmitting antennas; USA Councils; Wireless LAN;
Conference_Titel :
Signal Processing Advances in Wireless Communications, 2005 IEEE 6th Workshop on
Print_ISBN :
0-7803-8867-4
DOI :
10.1109/SPAWC.2005.1505903
