NDLI: CSIT-Adaptive Multiuser Resource Management for Space-Time Coded MIMO/OFDM Systems

Content Provider	IEEE Xplore Digital Library
Author	Weilan Huang Letaief, K.B. Ying Jun Zhang
Copyright Year	2006
Description	Author affiliation: Student Member, IEEE, Center for Wireless Information Technology, Electrical and Electronic Engineering Dept., Hong Kong Univ. of Science and Technology, Clear Water Bay, Kowloon, Hong Kong. Email: wlhuang@ust.hk (Weilan Huang) \|\| Fellow, IEEE, Center for Wireless Information Technology, Electrical and Electronic Engineering Dept., Hong Kong Univ. of Science and Technology, Clear Water Bay, Kowloon, Hong Kong. Email: eekhaled@ee.ust.hk (Letaief, K.B.) \|\| Member, IEEE, Department of Information Engineering, Chinese Univ. of Hong Kong, Shatin, New Territories, Hong Kong. Email: yjzhang@ie.cuhk.edu.hk (Ying Jun Zhang)
Abstract	Efficient resource management is a major issue in the operation of wireless communication systems given the limited resource availability. In contrast to most existing resource allocation techniques that assume perfect channel state information at the transmitter (CSIT), a novel adaptive resource management algorithm is proposed to optimize the spectral efficiency of a multiuser multi-input multi-output (MIMO)/orthogonal frequency division multiplexing (OFDM) system where only partial channel state information is available. With a space-time-block-coded beamformer employed at each mobile station, the proposed algorithm adaptively allocates subcarrier, bit, and power to realize efficient resource utilization. A distinctive feature of the proposed method is that the allocation strategy is directly related to the users' spatial correlation and the quality of channel feedback information. Numerical results will show that the proposed scheme achieves significant throughput improvement compared to non-adaptive systems. It will be also demonstrated that our proposed method outperforms a scheme which decouples the allocation problem into single-user optimization problems by introducing user-grouping.
Starting Page	4397
Ending Page	4402
File Size	269360
Page Count	6
File Format	PDF
ISBN	1424403553
ISSN	81649547
DOI	10.1109/ICC.2006.255330
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-06-11
Publisher Place	Turkey
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Resource management MIMO OFDM Channel state information Wireless communication Availability Transmitters Feedback Throughput Optimization methods MIMO OFDM Adaptive resource allocation partial CSI beamforming multiuser detection (MUD) multiple access correlation adaptive modulation
Content Type	Text
Resource Type	Article

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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