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Journal of Electrical and Computer Engineering
Volume 2015, Article ID 545798, 6 pages
http://dx.doi.org/10.1155/2015/545798
Research Article

Efficient Cross-Layer Optimization Algorithm for Data Transmission in Wireless Sensor Networks

School of Information Science and Engineering, Northeastern University, Shenyang, Liaoning 110819, China

Received 23 June 2015; Accepted 13 October 2015

Academic Editor: Jun Bi

Copyright © 2015 Chengtie Li 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.

Abstract

In this paper, we address the problems of joint design for channel selection, medium access control (MAC), signal input control, and power control with cooperative communication, which can achieve tradeoff between optimal signal control and power control in wireless sensor networks (WSNs). The problems are solved in two steps. Firstly, congestion control and link allocation are separately provided at transport layer and network layer, by supply and demand based on compressed sensing (CS). Secondly, we propose the cross-layer scheme to minimize the power cost of the whole network by a linear optimization problem. Channel selection and power control scheme, using the minimum power cost, are presented at MAC layer and physical layer, respectively. These functions interact through and are regulated by congestion rate so as to achieve a global optimality. Simulation results demonstrate the validity and high performance of the proposed algorithm.