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: Editorial Wireless Mobile Ad Hoc Networks | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2007 Article ID 63708 1 page doi 2007 63708 Editorial Wireless Mobile Ad Hoc Networks Hamid R. Sadjadpour 1 Robert Ulman 2 Ananthram Swami 3 and Anthony Ephremides4 1 School of Engineering University of California Santa Cruz CA 95064 USA 2 Army Research Office Research Triangle Park NC 27709 USA 3 Army Research Laboratory Adelphia MD 20783 USA 4 Department of Electrical Engineering University of Maryland at College Park MD 20742 USA Received 4 June 2007 Accepted 4 June 2007 Copyright 2007 Hamid R. Sadjadpour 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. Wireless mobile ad hoc networks MANETs due to their dynamic nature and due to the unreliability of the wireless medium pose unique challenges that are significantly more complex than those that arise in traditional wired or even cellular wireless networks. MANETs must self organize into a multihop peer-to-peer network without centralized control and without the help of base stations. Their topologies are unpredictable due to mobility and due to fading shadowing and other wireless channel impairments. The number and distribution of active nodes in the network are constantly changing thereby creating additional variability in the network connectivity. Power and energy constraints interference and the shared nature of the wireless medium require adaptive relaying mechanisms and channel access. In such a harsh environment robustness and quality of service QoS are essential. MANETs usually consist of a heterogeneous mixture of nodes with a variety of traffic types and different QoS requirements. Scaling laws for these networks are not fully understood. Diverse tradeoff studies related to capacity delay bandwidth and energy consumption are currently .
