NDLI: Improved signal superposition coding for cooperative diversity

Content Provider	IEEE Xplore Digital Library
Author	Salomon, A. Amrani, O.
Copyright Year	2010
Description	Author affiliation: Department of Electrical Engineering-Systems, Tel Aviv University (Salomon, A.; Amrani, O.)
Abstract	This paper proposes an improved scheme for cooperative transmit diversity, which applies the Euclidean superposition of modulated signals. Assuming two sources cooperate in transmitting information to a single destination, each source divides its transmit power between locally generated information and relayed information that originated at the other source. This leads to an encoding scheme in which each source transmits the Euclidean superposition of the local information and the relayed information. The new decoding approach at the destination relies on two decoding iterations: First, each transmitted information is evaluated from two consecutive received sequences (once as local information and once as relayed information); second, decoding is performed assuming that the previous and next information sequences were evaluated correctly. Optimization of this approach is shown to be achieved with significantly higher relay power allocation compared to the known approach. It is shown via simulation that this scheme provides significant coding gain compared to the known approach.
Starting Page	000138
Ending Page	000140
File Size	83305
Page Count	3
File Format	PDF
ISBN	9781424486816
e-ISBN	9781424486823
DOI	10.1109/EEEI.2010.5661904
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-11-17
Publisher Place	Israel
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Signal to noise ratio Decoding Error probability Encoding Resource management Iterative decoding Fading
Content Type	Text
Resource Type	Article

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