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2007
IEEE

Discrete Power Allocation for Lifetime Maximization in Cooperative Networks

11 years 15 days ago
Discrete Power Allocation for Lifetime Maximization in Cooperative Networks
Abstract— Discrete power allocation strategies for amplifyand-forward cooperative networks are proposed based on selective relaying methods. The goal of power allocation is to maximize the network lifetime, which is defined as the duration of time for which the outage probability at the destination can be maintained above a certain level. The discrete power levels enable a low cost implementation and a close integration with high speed digital circuits. We propose three power allocation strategies that take into consideration both the channel state information (CSI) and the residual energy information (REI) at each node. By modeling the residual energy of each node as the states of a Markov Chain, we are able to derive the network lifetime analytically by computing the expected number of transitions to the absorbing states, i.e., the energy states for which the outage probability is no longer achievable. The performance of the three strategies are compared through numerical simulati...
Wan-Jen Huang, Yao-Win Hong, C. C. Jay Kuo
Added 04 Jun 2010
Updated 04 Jun 2010
Type Conference
Year 2007
Where VTC
Authors Wan-Jen Huang, Yao-Win Hong, C. C. Jay Kuo
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