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Mathematical Problems in Engineering
Volume 2015, Article ID 294016, 10 pages
Research Article

The Role of Delay and Connectivity in Throughput Reduction of Cooperative Decentralized Wireless Networks

1Department of Electronics and Communication Engineering, Cankaya University, 06530 Ankara, Turkey
2Department of Information Technology, University of Babylon, Babylon, Iraq

Received 18 January 2015; Revised 28 March 2015; Accepted 28 March 2015

Academic Editor: Bo Shen

Copyright © 2015 Ahmed Alkhayyat et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


We proposed a multiple relay selection protocol for decentralized wireless networks. The proposed relays selection protocol aims to address three issues: (1) selecting relays within the coverage area of the source and destination to ensure that the relays are positioned one hop away from the destination, (2) ensuring that the best node (best relays with less distance and attenuation from the destination) access the channel first, and (3) ensuring that the proposed relays selection is collision-free. Our analysis also considers three important characteristics of decentralized wireless networks that are directly affected by cooperation: delay, connectivity, and throughput. The main goal of this paper is to demonstrate that improving connectivity and increasing number of relays reduce the throughput of cooperative decentralized wireless networks; consequently, a trade-off equation has been derived.