NDLI: Cooperative cognitive relaying under primary and secondary quality of service satisfaction

Content Provider	IEEE Xplore Digital Library
Author	El Shafie, A. Khattab, T.
Copyright Year	2014
Description	Author affiliation: Electr. Eng., Qatar Univ., Doha, Qatar (Khattab, T.) \|\| Wireless Intell. Networks Center (WINC), Nile Univ., Giza, Egypt (El Shafie, A.)
Abstract	This paper proposes a new cooperative protocol which involves cooperation between primary and secondary users. We consider a cognitive setting with one primary user (PU) and multiple secondary users (SUs). The time resource is partitioned into discrete time slots. Each time slot, one of the SUs is scheduled for transmission according to time division multiple access scheme, and the remainder of the SUs, which we refer to as secondary relays, attempt to decode the primary packet. If more than one relay can decode the primary packet, the secondary relays then employ cooperative beamforming to forward the packet and to provide protection to the destination of the SU scheduled for transmission from interference. We characterize the diversity-multiplexing tradeoff of the primary source under the proposed protocol. We consider certain quality of service for each user specified by its required throughput. The optimization problem is stated under such condition. It is shown that the optimization formulation is linear and can be readily solved.
Starting Page	953
Ending Page	958
File Size	212060
Page Count	6
File Format	PDF
ISBN	9781479949120
DOI	10.1109/PIMRC.2014.7136304
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-09-02
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Relays Array signal processing Interference Decoding Throughput Signal to noise ratio Quality of service
Content Type	Text
Resource Type	Article

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