Title :
Performance evaluation of the VBLAST algorithm in W-CDMA systems
Author :
Samardzija, Dragan ; Wolniansky, Peter ; Ling, Jonathan
Author_Institution :
Wireless Res. Lab., Lucent Technol. Bell Labs, Holmdel, NJ, USA
fDate :
6/23/1905 12:00:00 AM
Abstract :
We evaluate the performance of the VBLAST (vertical Bell Labs layered space-time) receiver algorithm in multiple-transmitter/multiple-receiver (MTMR) cellular W-CDMA systems. We assume that the VBLAST algorithm is executed on a symbol level (i.e., on the despread received signal), following a conventional bank of matched filters (correlators). Also, we introduce the concept of virtual antennas. Performance of the algorithm in the presence of intra- and inter-cell multiple-access interference (MAI) is evaluated. System capacity is also studied. The observed system is defined based on the UMTS physical layer and corresponding channel models
Keywords :
MIMO systems; antenna arrays; cellular radio; channel bank filters; code division multiple access; correlators; fading channels; matched filters; radio receivers; radio transmitters; radiofrequency interference; spread spectrum communication; MIMO channel response; UMTS physical layer; VBLAST algorithm; cellular W-CDMA systems; correlators; despread received signal; frequency selective fading channel; intercell MAI; intracell MAI; matched filter bank; multi-element antenna arrays; multiple receiver; multiple transmitter; multiple-access interference; vertical Bell Labs layered space-time algorithm; virtual antennas; Channel coding; Downlink; Interference; Laboratories; MIMO; Matched filters; Multiaccess communication; Receiving antennas; Transmitters; Transmitting antennas;
Conference_Titel :
Vehicular Technology Conference, 2001. VTC 2001 Fall. IEEE VTS 54th
Conference_Location :
Atlantic City, NJ
Print_ISBN :
0-7803-7005-8
DOI :
10.1109/VTC.2001.956865
