Title :
System evaluation of optimal downlink beamforming in wireless communication
Author :
Stridh, Rickard ; Bengtsson, Mats ; Ottersten, Bjorn
Author_Institution :
Dept. of Signals, Sensors & Syst., R. Inst. of Technol., Stockholm, Sweden
fDate :
6/23/1905 12:00:00 AM
Abstract :
We investigate the use of joint optimal downlink beamforming, power control and access point allocation, in a multicell SDMA system. Smart antennas are used at the access points and single antennas are used at the terminals. The possibility to send messages to multiple terminals on the same frequency in the same time slot is exploited. An algorithm for removing users from a congested system, in order to avoid outage is proposed and evaluated Results show that the proposed algorithm gives substantial increase of the system performance compared to random removal of users.
Keywords :
adaptive antenna arrays; array signal processing; cellular radio; land mobile radio; multiuser channels; optimisation; packet radio networks; power control; radio links; space division multiple access; telecommunication control; access point allocation; congested system; heuristic algorithms; multicell SDMA system; optimal downlink beamforming; outage avoidance; packet switching; power control; smart antennas; system evaluation; system performance; wireless communication; wireless communication system; Admission control; Array signal processing; Downlink; Frequency; Mobile communication; Mobile computing; Multiaccess communication; Power control; Statistics; Wireless communication;
Conference_Titel :
Vehicular Technology Conference, 2001. VTC 2001 Fall. IEEE VTS 54th
Print_ISBN :
0-7803-7005-8
DOI :
10.1109/VTC.2001.956616
