Title :
Spatial multiuser pairing scheduling strategies for virtual MIMO systems
Author :
Wang, Xiaoting ; Wang, Wenbo ; Zhu, Tianlin ; Zhao, Zongyin
Author_Institution :
Wireless Signal Process. & Network Lab., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
This paper investigates the spatial multiuser scheduling strategies that apply different pairing criteria to select a pair of users carrying out transmission simultaneously in virtual MIMO (VMIMO) systems. Five kinds of criteria are described and compared, which are categorized as channel correlation minimization, bit error rate (BER) minimization and capacity maximization depending on their diverse starting points. The system throughput and user fairness are simulated and analyzed. As the results show, the proposed criteria can make full use of channel state information provided by the physical layer and can be compatible with different antenna deployments, and in addition, through obtaining more spatial diversity gain and multiuser diversity gain, the VMIMO system with spatial pairing scheduling approaches remarkably improve the system performance comparing to the MIMO system with single user scheduling.
Keywords :
MIMO communication; diversity reception; error statistics; scheduling; wireless channels; bit error rate minimization; capacity maximization; channel correlation minimization; channel state information; multiuser diversity gain; physical layer; single user scheduling; spatial diversity gain; spatial multiuser pairing scheduling strategies; virtual MIMO systems; Base stations; Bit error rate; Diversity methods; MIMO; Minimization methods; Receiving antennas; Scheduling algorithm; Throughput; Transmitting antennas; Wireless communication;
Conference_Titel :
Communication Systems, 2008. ICCS 2008. 11th IEEE Singapore International Conference on
Conference_Location :
Guangzhou
Print_ISBN :
978-1-4244-2423-8
Electronic_ISBN :
978-1-4244-2424-5
DOI :
10.1109/ICCS.2008.4737300
