Performance Evaluation of a Three Node Client Relay System

Performance Evaluation of a Three Node Client Relay System

Sergey Andreev (Tampere University of Technology, Finland), Olga Galinina (Tampere University of Technology, Finland) and Alexey Vinel (Tampere University of Technology, Finland)
DOI: 10.4018/978-1-4666-3902-7.ch006
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Abstract

In this paper, the authors examine a client relay system comprising three wireless nodes. Closed-form expressions for mean packet delay, as well as for throughput, energy expenditure, and energy efficiency of the source nodes are also obtained. The precision of the established parameters is verified by means of simulation.
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Research Background

While more and more users are sharing the limited wireless resource and cellular networks are gradually shifting towards more aggressive frequency reuse scenarios (Marks, Nikolich, & Snyder, in press; Nakamura, in press), wireless interference becomes one of the major limiting factors that impair network performance growth. Wireless data transmission of a user, being unavoidably broadcast, necessarily impacts the transmission process of other users and consequently degrades the overall system energy efficiency. However, users may gain in their energy efficiencies by acting cooperatively (Cui, Goldsmith, & Bahai, 2004; Jayaweera, 2004). Such a spatial domain resource management is becoming increasingly important to improve the performance of the cell-edge users with a poor communication link (Andreev, Galinina, & Vinel, 2010).

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