Achieving scalable capacity in wireless networks with adaptive power control
Refereed conference paper presented and published in conference proceedings

香港中文大學研究人員
替代計量分析
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摘要The seminar work of Gupta and Kumar [1] showed that multi-hop wireless networks with capacity scalable with the number of nodes, n, are achievable in theory. The transport capacity scales as Θ(√n). while the capacity scales as η(n). A subsequent study [2], on the other hand, showed that the capacity of IEEE 802.11 networks does not scale with n due to its carrier-sensing mechanism. This prior work, however, has not considered the use of power control. The main contributions of this paper are three-folds: 1) we provide an analytical framework for deriving the design requirements of adaptive power control strategies; 2) we demonstrate that 802.11 networks are scalable with power control; 3) however, an enhanced MAC protocol called Selective Disregard of NAVs (SDN) can achieve substantially higher capacity with an adaptive power control scheme; in particular, adaptive power control allows SDN to achieve capacity within 75% of the theoretical optimal capacity of infrastructure-mode wireless networks. A reason why adaptive power control works well is that it takes into consideration the fundamental mutual-interference relationships between links in the vicinity of each other, and adjust their relative transmit powers to reduce these interferences to a large extent that is possible theoretically. © 2005 IEEE.
著者Ho W.H., Liew S.C.
會議名稱IEEE Conference on Local Computer Networks - 30th Anniversary, LCN 2005
會議開始日15.11.2005
會議完結日17.11.2005
會議地點Sydney
會議國家/地區澳大利亞
詳細描述organized by IEEE,
出版年份2005
月份12
日期1
卷號2005
頁次720 - 728
國際標準書號0769524214
語言英式英語

上次更新時間 2020-23-10 於 00:48