NDLI: On the information throughput and optimized power allocation for MIMO wireless systems with imperfect channel estimation

Content Provider	IEEE Xplore Digital Library
Author	Baccarelli, E. Biagi, M. Pelizzoni, C.
Copyright Year	1991
Abstract	In this paper, we focus on the throughput analysis, outage evaluation and optimized power allocation for Multiple-Input Multiple-Output (MIMO) pilot-based wireless systems subject to short-term constraints on the radiated power and equipped with a feedback-path for communicating back to the transmitter the imperfect MIMO channel estimates available at the receiver. The case of the ergodic throughput for Gaussian distributed input signals is analyzed, and the conditions for the (asymptotical) achievement of the Shannon capacity are pointed out. The main contributions of this work may be so summarized. First, we develop closed-form analytical expressions for the computation of the ergodic information throughput conveyed by the considered MIMO system for the case of ideal feedback link. Second, we present an iterative algorithm for the optimized power allocation over the transmit antennas that explicitly accounts for the imperfect MIMO channel estimates available at the receiver. Third, after relaxing the assumption of ideal feedback link, we test the sensitivity of the proposed power allocation algorithm on errors possibly introduced by the feedback channel, and then, we numerically evaluate the resulting throughput loss. Finally, we develop closed-form upper and lower bounds on the outage probability that are asymptotically tight.
Sponsorship	IEEE Signal Processing Society
Starting Page	2335
Ending Page	2347
Page Count	13
File Size	860318
File Format	PDF
ISSN	1053587X
Volume Number	53
Issue Number	7
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-07-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Throughput MIMO Channel estimation Feedback Iterative algorithms Constraint optimization Transmitters Signal analysis Information analysis Receiving antennas power allocation Ergodic throughput imperfect channel estimation MIMO systems multiple antennas outage probability
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering

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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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CHAPTER 5 Power Allocation algorithms for MIMO Systems with Imperfect Channel State Information

IEEE TRANSACTIONS ON SIGNAL PROCESSING, VOL. 53, NO. 7, JULY 2005 2335 On the Information Throughput and Optimized (2005)

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CHAPTER 5 Power Allocation algorithms for MIMO Systems with Imperfect Channel State Information

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