tailieunhanh - Báo cáo hóa học: "Research Article Minimizing Detection Probability Routing in Ad Hoc Networks Using Directional Antennas"

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: Research Research Article Minimizing Detection Probability Routing in Ad Hoc Networks Using Directional Antennas | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2009 Article ID 256714 8 pages doi 2009 256714 Research Article Minimizing Detection Probability Routing in Ad Hoc Networks Using Directional Antennas Xiaofeng Lu 1 Don Towsley 2 Pietro Lio 3 Fletcher Wicker 4 and Zhang Xiong1 1 School of Computer Science Beijing University of Aeronautics and Astronautics Beijing 100191 China 2 Department of Computer Science University of Massachusetts at Amherst Amherst MA 01003-9264 USA 3 Computer Laboratory University of Cambridge Cambridge CB3 0FD UK 4 Communication Network Architectures Subdivision The Aerospace Corporation CA 90245-4691 USA Correspondence should be addressed to Xiaofeng Lu luxf@ Received 31 January 2009 Revised 1 April 2009 Accepted 3 May 2009 Recommended by Shuhui Yang In a hostile environment it is important for a transmitter to make its wireless transmission invisible to adversaries because an adversary can detect the transmitter if the received power at its antennas is strong enough. This paper defines a detection probability model to compute the level of a transmitter being detected by a detection system at arbitrary location around the transmitter. Our study proves that the probability of detecting a directional antenna is much lower than that of detecting an omnidirectional antenna if both the directional and omnidirectional antennas provide the same Effective Isotropic Radiated Power EIRP in the direction of the receiver. We propose a Minimizing Detection Probability MinDP routing algorithm to find a secure routing path in ad hoc networks where nodes employ directional antennas to transmit data to decrease the probability of being detected by adversaries. Our study shows that the MinDP routing algorithm can reduce the total detection probability of deliveries from the source to the destination by over 74 . Copyright 2009 Xiaofeng Lu et al. This is an open access article distributed .