DocumentCode :
1607225
Title :
Performance analysis of multiuser diversity in MIMO channels
Author :
Ahmed, I.S. ; Ibnkahla, Mohamed
Author_Institution :
Dept. of Electr. & Comput. Eng., Queen´´s Univ., Canada
Volume :
2
fYear :
2004
Firstpage :
1199
Abstract :
A central feature of mobile wireless networks is the random fading of the channel strengths of the underlying communication links. Traditionally, fading on wireless channels has been viewed as a form of unreliability that must be mitigated in order to achieve reliable data transfer. A new design principle, known as multiuser diversity, rather harnesses the randomness of this fading in a multiuser environment to improve the performance of the overall system. We develop tractable mathematical models for evaluating the average delay, throughput and symbol error probability (SEP) performances of multiuser diversity systems in MIMO channels. Analytical comparisons with the performances of a conventional round-robin scheme like TDMA are then made. Our results show that with multiuser diversity, there is significant reduction in the average delay that user data packets experience in the network, compared to the TDMA system. It is also observed that throughput and SEP performance for a multiuser diversity system improve as the number of users in the cell increase.
Keywords :
MIMO systems; cellular radio; delays; diversity reception; error statistics; fading channels; multiuser channels; packet radio networks; time division multiple access; MIMO channels; TDMA; average delay; fading channels; mobile wireless networks; multiuser diversity; random fading; symbol error probability; throughput; tractable mathematical models; Delay; Fading; MIMO; Mathematical model; Mobile communication; Performance analysis; Telecommunication network reliability; Throughput; Time division multiple access; Wireless networks;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electrical and Computer Engineering, 2004. Canadian Conference on
ISSN :
0840-7789
Print_ISBN :
0-7803-8253-6
Type :
conf
DOI :
10.1109/CCECE.2004.1345336
Filename :
1345336
Link To Document :
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