NDLI: Adaptive user selection of opportunistic multicast scheduling in wireless networks

Content Provider	IET Digital Library
Author	Li, Mingming Wang, Xiaoxiang Zhou, Jia Qu, Jing
Abstract	In this study, an adaptive user selection of opportunistic multicast scheduling system (OMS-AUS) scheme is proposed to improve the system throughput performance of opportunistic multicast scheduling system. Different from the previous literatures, the user selection ratio would no longer be a constant, but would vary as the number of users that have not received multicast bits changes, which can exploit the system transmission ability better. The objective is to obtain the optimal values of user selection fractions. (i) For the case without instantaneous channel state information (CSI), a channel gain distribution-based OMS-AUS is proposed. Firstly, a system throughput matrix (STM) is formulated to imitate the user grouping process. Secondly, the value of each element in STM is derived according to the channel gain distribution. Finally, by fully searching the elements in STM, the optimal solution is obtained. To reduce the computational complexity, a suboptimal heuristic searching scheme is also proposed. (ii) For the case with instantaneous CSI, an improved approach based on both the channel gain distribution and instantaneous CSIs is proposed. Simulation results show that both of the two proposed approaches can obtain better performance compared to the existing schemes.
Starting Page	964
Ending Page	971
Page Count	8
ISSN	17518628
Volume Number	8
e-ISSN	17518636
Issue Number	Issue 6, Apr (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/8/6
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2013.0486
Journal	IET Communications
Publisher Date	2014-02-21
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Adaptive User Selection Algebra Channel Gain Distribution Combinatorial Mathematics Computational Complexity CSI Heuristic Programming Instantaneous Channel State Information Matrix Algebra Multicast Communication OMS-AUS Scheme Opportunistic Multicast Scheduling System Optimisation Technique Radio Link And Equipment Radio Network Scheduling Search Problem STM Suboptimal Heuristic Searching Scheme System Throughput Matrix System Throughput Performance User Grouping Process User Selection Fractions Wireless Network
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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