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2007

Lifetime maximization via cooperative nodes and relay deployment in wireless networks

8 years 3 months ago
Lifetime maximization via cooperative nodes and relay deployment in wireless networks
— Extending lifetime of battery-operated devices is a key design issue that allows uninterrupted information exchange among distributed nodes in wireless networks. Cooperative communications has recently emerged as a new communication paradigm that enables and leverages effective resource sharing among cooperative nodes. In this paper, a general framework for lifetime extension of battery-operated devices by exploiting cooperative diversity is proposed. The framework efficiently takes advantage of different locations and energy levels among distributed nodes. First, a lifetime maximization problem via cooperative nodes is considered and performance analysis for Mary PSK modulation is provided. With an objective to maximize the minimum device lifetime under a constraint on bit-errorrate performance, the optimization problem determines which nodes should cooperate and how much power should be allocated for cooperation. Since the formulated problem is NP hard, a closed-form solution fo...
Thanongsak Himsoon, W. Pam Siriwongpairat, Zhu Han
Added 16 Dec 2010
Updated 16 Dec 2010
Type Journal
Year 2007
Where JSAC
Authors Thanongsak Himsoon, W. Pam Siriwongpairat, Zhu Han, K. J. Ray Liu
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