@article{4d5fb0d6e0414a49a065589de5d2c23f,
title = "Adaptive cross-layer MAC design for improved energy-efficiency in multi-channel wireless sensor networks",
abstract = "We present a novel cross-layer design for improving energy efficiency in a wireless sensor network that utilizes a multi-channel non-persistent CSMA MAC protocol with adaptive MQAM modulation at the physical layer. Cross-layer interactions are achieved through joint, traffic-dependent adaptation of the backoff probability at the MAC layer and the modulation order at the physical layer. The joint optimization of the backoff probability and the modulation order is conducted subject to a constraint on the packet retransmission delay. Such an optimization is shown to produce a significant improvement in the per-bit energy requirement for successful packet delivery. Our analytical findings are verified through numerical results and computer simulations.",
keywords = "Backoff probability, CSMA, Cross-layer design, MQAM, Traffic load, WSN",
author = "Salameh, {Haythem Bany} and Tao Shu and Marwan Krunz",
note = "Funding Information: Marwan Krunz is a professor of electrical and computer engineering at the University of Arizona and the director of the advanced networking and wireless communications group. He received his Ph.D. degree in electrical engineering from Michigan State University in 1995. From 1995 to 1997, he was a postdoctoral research associate with the Department of Computer Science at the University of Maryland, College Park. He joined the University of Arizona in January of 1997. He previously held visiting research positions at INRIA (Sophia Antipolis, France), HP Labs (Palo Alto, California), Paris VI, and US West (now Qwest) Advanced Technologies. His research interests lie in the fields of computer networking and wireless communications. His recent interests include power/rate control in wireless and sensor networks, channel access and routing protocols, media streaming, quality of service routing, and optical networking. He previously worked on traffic analysis and performance evaluation, packet video modeling, and QoS provisioning in high-speed networks. He is a recipient of the National Science Foundation CAREER Award (1998–2002). He currently serves on the editorial board for the IEEE/ACM Transactions on Networking, the IEEE Transactions on Mobile Computing, and the Computer Communications Journal. He was a guest co-editor for special issues in IEEE Micro and IEEE Communications Magazines. He served as a technical program chair for the IEEE WoWMoM 2006, the IEEE International Conference on Sensor and Ad hoc Communications and Networks (SECON 2005), Santa Clara, September 2005; the IEEE INFOCOM 2004 Conference, Hong Kong, March 2004; and the 9th Hot Interconnects Symposium, Stanford University, August 2001. He has served and continues to serve on the executive and technical program committees of many international conferences and on the panels of several NSF directorates. He gave several tutorials at premier wireless networking conferences. He is a senior member of the IEEE and a member of the ACM. Funding Information: An abridged version of this paper was presented at the IEEE GLOBECOM Conference, San Francisco, November 2006. This work was supported in part by the National Science Foundation under Grants CNS-0627118 and CNS-0313234. ",
year = "2007",
month = aug,
doi = "10.1016/j.adhoc.2007.02.011",
language = "English (US)",
volume = "5",
pages = "844--854",
journal = "Ad Hoc Networks",
issn = "1570-8705",
publisher = "Elsevier B.V.",
number = "6",
}