DocumentCode :
3542722
Title :
User Selection Algorithms for Simultaneous Unicast and Multicast Services
Author :
Yi Jia ; Zhigang Chen ; Pinyi Ren
Author_Institution :
Dept. of Inf. & Commun. Eng., Xi´an Jiaotong Univ., Xi´an, China
fYear :
2012
fDate :
21-23 Sept. 2012
Firstpage :
1
Lastpage :
4
Abstract :
This paper presents a transmitting scheme and corresponding user selection algorithms for simultaneous unicast and multicast services. On the subcarriers assigned to multicast services, BS transmits the superposition of unicast and multicast signals. Block diagonalization (BD) and power control are applied to unicast signal, to make sure interference from unicast not reduce the rate of multicast signal. We propose the optimal and a suboptimal user selection scheme to make the unicast rate as much as possible. Theoretical analysis and simulation results show that, the performance of the suboptimal scheme is close to that of the optimal approach, while the complexity is effectively decreased. Besides that, both the optimal and suboptimal schemes can get better unicast rate than random selection while the multicast rate is the same as the one before superposition.
Keywords :
multicast communication; radio networks; block diagonalization; multicast services; multicast signal; power control; random selection; suboptimal user selection scheme; transmitting scheme; unicast services; Antennas; Complexity theory; Interference; Power control; Signal to noise ratio; Unicast; Vectors;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Wireless Communications, Networking and Mobile Computing (WiCOM), 2012 8th International Conference on
Conference_Location :
Shanghai
ISSN :
2161-9646
Print_ISBN :
978-1-61284-684-2
Type :
conf
DOI :
10.1109/WiCOM.2012.6478737
Filename :
6478737
Link To Document :
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