NDLI: A multi-stage multi-user decode-and-forward cooperative communications scheme using linear combination

Content Provider	IEEE Xplore Digital Library
Author	Ho Van Khuong Tho Le-Ngoc
Copyright Year	2010
Description	Author affiliation: Department of Electrical & Computer Engineering, McGill University, Canada (Ho Van Khuong; Tho Le-Ngoc)
Abstract	Wireless network cocast (WNC) offers a better tradeoff in spatial diversity and transmission delay than the immediate-neighbor cooperation (INC) and the maximal cooperation (MAX) [1]. However, its transmission delay is almost double that of direct transmission (DTX), resulting in a long waiting time for the destination to detect all user signals. Furthermore, cooperation $probability^{1}$ is low, eventually reducing the spatial diversity order at the destination. This paper solves the above problems by allowing users to linearly combine their own signals with successfully detected partner signals and to perform a simple multi-user detection. Closed-form error performance formulas are derived and validated by computer simulations. Results show that, for low cross-correlation among user signature waveforms, the proposed scheme offers a better performance than WNC and achieves the same transmission delay as DTX. For high cross-correlation, its performance is negligibly degraded as compared to WNC.
Starting Page	1
Ending Page	5
File Size	263928
Page Count	5
File Format	PDF
ISBN	9781424453764
ISSN	08407789
DOI	10.1109/CCECE.2010.5575250
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-05-02
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Delay Wireless networks AWGN Multiuser detection Power distribution Binary phase shift keying multi-user detection Multi-stage multi-user cooperative communications decode-and-forward linear combination
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Hardware and Architecture

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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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