NDLI: Iterative Channel Estimation and Data Detection for Amplify-and-Forward Relay Networks

Content Provider	IEEE Xplore Digital Library
Author	Yi Zhang Khalighi, M. Bourennane, S.
Copyright Year	1997
Abstract	We consider channel estimation in amplify-and-forward wireless relay networks when non-orthogonal coherent distributed space-time coding is done at relays. We propose to perform iterative channel estimation and data detection based on parallel interference cancelation (PIC) at the receiver. The schemes that we propose are based on soft or hard estimates of the transmitted data symbols. We illustrate the performance improvement compared to the classical approach of pilot-only-based channel estimation and minimum mean-square-error detection. Also, we show that semi-blind channel estimation together with PIC detection is particularly promising for large signal constellations. Moreover, we show that the use of hard estimates of symbols in the proposed iterative receiver provides satisfying results, while requiring a lower computational complexity.
Starting Page	710
Ending Page	713
Page Count	4
File Size	193561
File Format	PDF
ISSN	10897798
Volume Number	16
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-05-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Channel estimation Relays Receivers Detectors Phase shift keying Wireless sensor networks iterative processing Wireless relay networks distributed diversity semi-blind channel estimation
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Modeling and Simulation Computer Science Applications

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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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