tailieunhanh - Báo cáo hóa học: " Energy Efficient AODV Routing in CDMA Ad Hoc Networks Using Beamforming"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Energy Efficient AODV Routing in CDMA Ad Hoc Networks Using Beamforming | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2006 Article ID 76709 Pages 1-8 DOI WCN 2006 76709 Energy Efficient AODV Routing in CDMA Ad Hoc Networks Using Beamforming Nie Nie and Cristina Comaniciu Department of Electrical and Computer Engineering Stevens Institute of Technology Hoboken NJ 07030 USA Received 17 July 2005 Revised 12 April 2006 Accepted 18 April 2006 Recommended for Publication by Biao Chen We propose an energy aware on-demand routing protocol for CDMA mobile ad hoc networks for which improvements in the energy consumption are realized by both introducing an energy-based routing measure and by enhancing the physical layer performance using beamforming. Exploiting the cross-layer interactions between the network and the physical layer leads to a significant improvement in the energy efficiency compared with the traditional AODV protocol and provides an alternative solution of link breakage detection in traditional AODV protocol. Several performance measures are considered for evaluating the network performance such as data energy consumption latency and overhead energy consumption. An optimum SIR threshold range is determined experimentally for various implementation scenarios. Copyright 2006 N. Nie and C. Comaniciu. 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. 1. INTRODUCTION In ad hoc networks every node must participate not only as a host but also as a router forwarding packets to their destinations. When network topology changes unpredictably due to node movements the hosts need to determine the routes to other nodes frequently. Ad hoc on-demand distance vector routing protocol AODV proposed in 1 is one of the developed protocols that enable routing with continuously changing topologies. AODV establishes routes when they are