NDLI: Capacity-approaching turbo coding and iterative decoding for relay channels

Content Provider	IEEE Xplore Digital Library
Author	Zheng Zhang Duman, T.M.
Copyright Year	1972
Abstract	In this paper, we design turbo-based coding schemes for relay systems together with iterative decoding algorithms. In the proposed schemes, the source node sends coded information bits to both the relay and the destination nodes, while the relay simultaneously forwards its estimate for the previous coded block to the destination after decoding and re-encoding. The destination observes a superposition of the codewords and uses an iterative decoding algorithm to estimate the transmitted messages. Different from the block-by-block decoding techniques used in the literature, this decoding scheme operates over all the transmitted blocks jointly. Various encoding and decoding approaches are proposed for both single-input single-output and multi-input multi-output systems over several different channel models. Capacity bounds and information-rate bounds with binary inputs are also provided, and it is shown that the performance of the proposed practical scheme is typically about 1.0-1.5 dB away from the theoretical limits, and a remarkable advantage can be achieved over the direct and multihop transmission alternatives.
Starting Page	1895
Ending Page	1905
Page Count	11
File Size	563081
File Format	PDF
ISSN	00906778
Volume Number	53
Issue Number	11
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-11-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Turbo codes Iterative decoding Digital relays Iterative algorithms Information rates Algorithm design and analysis MIMO Upper bound Degradation turbo coding Channel capacity cooperative diversity full duplex information rates iterative decoding multihop multiple-input multiple-output (MIMO) relay
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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