Paper Info
Title
Optimal transmission policy for cooperative transmission with energy harvesting and battery operated sensor nodes
Abstract
In this paper, we consider a scenario where one energy harvesting and one battery operated sensor cooperatively transmit a common message to a distant base station. The goal is to find the jointly optimal transmission (power allocation) policy which maximizes the total throughput for a given deadline. Initially, we address the case in which the storage capacity of the energy harvesting sensor is infinite. In this context, we identify the necessary conditions for such optimal transmission policy. On their basis, we first show that the problem is convex. Then we go one step beyond and prove that (i) the optimal power allocation for the energy harvesting sensor can be computed independently; and (ii) it unequivocally determines (and allows to compute) that of the battery operated one. Finally, we generalize the analysis for the case of finite storage capacity. Performance is assessed by means of computer simulations. Particular attention is paid to the impact of finite storage capacity and long-term battery degradation on the achievable throughput.
Year
DOI
Venue
2013
10.1016/j.sigpro.2013.04.009
Signal Processing
Keywords
DocType
Volume
optimal transmission,optimal power allocation,finite storage capacity,sensor node,total throughput,achievable throughput,storage capacity,cooperative transmission,optimal transmission policy,power allocation,long-term battery degradation,energy harvesting,wireless sensor networks
Journal
93
Issue
ISSN
Citations 
11
0165-1684
7
PageRank 
References 
Authors
0.52
11
3
Name
Order
Citations
PageRank
Lazar Berbakov1215.98
Carles Antón-Haro212020.93
Javier Matamoros320421.25