NDLI: Random access cooperative communication

Content Provider	IEEE Xplore Digital Library
Author	Hunter, C. Sabharwal, A.
Copyright Year	2008
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Rice Univ., Houston, TX (Hunter, C.; Sabharwal, A.)
Abstract	User cooperation has been studied extensively in the literature. This mechanism achieves many of the same gains that can be had by using multi-antenna (MIMO) communications in applications where the size or computational resources of a node are limited. However, existing analysis assumes that the system is scheduled; both the relay and the destination know to listen when a packet is being sent. We present analysis of a class of random access cooperative systems and show that the same performance as the scheduled systems can be achieved as long as certain requirements are met in the packet detection scheme of the relay. In particular, we find that cooperative networks with a static decision threshold on energy detection perform asymptotically no better than simple point-to-point non-cooperative links. However, a decision threshold that dynamically shifts with average SNR allows the system to achieve full spatial diversity.
Starting Page	111
Ending Page	115
File Size	479723
Page Count	5
File Format	PDF
ISBN	9781424429400
ISSN	10586393
DOI	10.1109/ACSSC.2008.5074373
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-26
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Computer networks MIMO amplify-and-forward Random access relay cooperation
Content Type	Text
Resource Type	Article
Subject	Signal Processing Computer Networks and Communications

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