DocumentCode :
2808692
Title :
Downlink beamforming and data rate adaptation applied for packet data transmission over the UMTS dedicated channel
Author :
Jugl, Enrico ; Schact, M. ; Dekorsy, Armin ; Mückenheim, Jens
Author_Institution :
Lucent Technol., Nuremberg
fYear :
2004
fDate :
18-19 March 2004
Firstpage :
160
Lastpage :
166
Abstract :
In this paper system level simulation results from the performance evaluation of applicable downlink beamforming concepts for UMTS are presented. For the first time the combination of beamforming and packet data services over UMTS dedicated channels in conjunction with data rate adaptation is investigated. The main focus of this paper is to assess realistic system capacity gains of the different beamforming concepts regarding UMTS specific conditions. Special focus is paid on the comparison of 3/6 sector scenarios with fixed beam switching (FBS) and beam pointing (BP). When applying FBS and BP with 4 antenna elements (4 beams for FBS) a cell throughput gain of about 180...190 % is reached compared to 3 sectors scenario. This gain is coming along with a reduction of the required downlink transmit power dedicated to a specific user. Moreover, due to the lower complexity of the FBS concept and the comparable capacity gain, FBS is preferred to BP
Keywords :
3G mobile communication; adaptive antenna arrays; channel capacity; data communication; packet radio networks; BP; FBS; UMTS dedicated channel; beam pointing; capacity gains; data rate adaptation; downlink beamforming; fixed beam switching; packet data transmission; smart antenna; universal mobile telecommunication system; 3G mobile communication; Adaptive arrays; Array signal processing; Data communication; Downlink; Interference; Load flow control; Resource management; Signal to noise ratio; Throughput;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Smart Antennas, 2004. ITG Workshop on
Conference_Location :
Munich
Print_ISBN :
0-7803-8327-3
Type :
conf
DOI :
10.1109/WSA.2004.1407663
Filename :
1407663
Link To Document :
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