NDLI: Subchannel grouping and statistical waterfilling for vector block-fading channels

Content Provider	IEEE Xplore Digital Library
Author	Ying-Chang Liang Rui Zhang Cioffi, J.M.
Copyright Year	1972
Abstract	In this paper, capacity limits and power-control schemes are assessed for the block-fading (BF) additive white Gaussian noise (AWGN) channels under the assumption that the channel state information (CSI) is known at both the transmitter and the receiver sides. Two notions of channel capacity limits are considered in this paper, including the ergodic capacity for transmission without delay constraint, and the delay-limited capacity for transmission under a strict delay constraint. With the full availability of CSI, a BF channel can be decomposed into multiple space-time-frequency subchannels, and is, therefore, considered in this paper as a vector BF channel. We propose a class of multitarget (MT) power-control schemes, which we show to be computationally implementable and able to perform well in approaching the capacity limits of vector BF channels. These power-control schemes are based on a subchannel grouping technique, which can be used to further divide subchannels in a vector BF channel into multiple grouped channels, each exhibiting different fading statistics. Each MT scheme then assigns a particular set of power "targets" into these grouped channels, and maximizes the transmission rate via various statistical waterfilling solutions. Numerical results are presented to evaluate and compare the achievable transmission rates associated with these proposed schemes for some example vector BF channels
Starting Page	1131
Ending Page	1142
Page Count	12
File Size	727505
File Format	PDF
ISSN	00906778
Volume Number	54
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Delay AWGN Channel state information Transmitters Channel capacity Fading MIMO Additive white noise Availability Statistics subchannel grouping Block fading channel capacity multiple-input multiple-output (MIMO) power control statistical waterfilling
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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