NDLI: Broadcasting over Two-Hop Relay Fading Channels

Content Provider	IEEE Xplore Digital Library
Author	Steiner, A. Shamai, S.
Copyright Year	2006
Description	Author affiliation: Dept. of Electr. Eng., Technion-Israel Inst. of Technol., Haifa (Steiner, A.; Shamai, S.)
Abstract	We consider a two-hop relay channel, with stringent delay constraints, which require transmission without channel state information (CSI), where only decoders possess perfect CSI estimation. Various relaying protocols and single-user broadcasting strategies are studied. For a decode-and-forward (DF) relay several broadcasting strategies are considered. Then, for an amplify-and-forward (AF) relay, a maximal broadcasting achievable rate is analytically derived. A quantize-and-forward (QF) relay is also considered. When coupled with a single-level code at the source it uses codebooks matched to the received signal power and performs optimal minimal mean square error (MMSE) quantization. This scheme is simplified by a hybrid amplify-quantize-forward (AQF) relay, which scales the input, and performs optimal MMSE quantization with a single codebook. It is shown that the latter is optimal in means of throughput on the relay-destination link, while maintaining a lower coding complexity than the QF setting. A further extension of the AQF allows the relay to perform successive refinement quantization coupled with a matched multi-level code. Numerical results show that for high SNRs the broadcast approach over AF relay may achieve higher throughput gains than the other relaying protocols that were numerically tractable
Starting Page	26
Ending Page	29
File Size	506012
Page Count	4
File Format	PDF
ISBN	1424400929
DOI	10.1109/IZS.2006.1649070
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-02-22
Publisher Place	Switzerland
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Broadcasting Relays Fading Quantization Delay estimation Decoding Protocols Throughput Channel state information State estimation
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
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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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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