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Power efficient transmission protoco...

Tang, Choon Yik.

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Power efficient transmission protocols for wireless networks.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Power efficient transmission protocols for wireless networks./
作者:	Tang, Choon Yik.
面頁冊數:	144 p.
附註:	Source: Dissertation Abstracts International, Volume: 64-06, Section: B, page: 2843.
Contained By:	Dissertation Abstracts International64-06B.
標題:	Engineering, Electronics and Electrical. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3096215

Power efficient transmission protocols for wireless networks.
Tang, Choon Yik.

Power efficient transmission protocols for wireless networks. - 144 p.

Source: Dissertation Abstracts International, Volume: 64-06, Section: B, page: 2843.

Thesis (Ph.D.)--University of Michigan, 2003.

Wireless communication network is an important area of modern technology. To ensure reliable communications in an inevitably uncertain and ever-changing environment, link adaptation is necessary. In addition, since wireless devices typically have limited power supply and mobile users often want to communicate regardless of their locations, power-efficient and location-fair link adaptation is highly desirable.Subjects--Topical Terms:

626636
Engineering, Electronics and Electrical.

Power efficient transmission protocols for wireless networks.
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245 1 0 $a Power efficient transmission protocols for wireless networks.
300 $a 144 p.
500 $a Source: Dissertation Abstracts International, Volume: 64-06, Section: B, page: 2843.
500 $a Co-Chairs: Pierre T. Kabamba; Semyon M. Meerkov.
502 $a Thesis (Ph.D.)--University of Michigan, 2003.
520 $a Wireless communication network is an important area of modern technology. To ensure reliable communications in an inevitably uncertain and ever-changing environment, link adaptation is necessary. In addition, since wireless devices typically have limited power supply and mobile users often want to communicate regardless of their locations, power-efficient and location-fair link adaptation is highly desirable.
520 $a This dissertation is devoted to the analysis and design of power-efficient and location-fair link adaptation protocols for wireless networks. It addresses fundamental issues in data rate control and power management, develops practical adaptation protocols, and analyzes their performance.
520 $a More specifically, in data rate control, the maximum achievable average throughput of feedforward controllers is derived. The optimal controller is found to be channel-independent but non-causal. A suboptimal implementable controller, which yields significant increase in average throughput over fixed data rate operation in Rician fading channels, is designed and shown to outperform existing protocols.
520 $a In power management, both TDMA and CDMA systems are considered. For TDMA systems, the optimal transmission policy, which maximizes power-efficiency, is proved to be of threshold nature. This policy is simplified, resulting in a suboptimal threshold policy that is 11 dB more power-efficient than traditional TDMA. It is however location-unfair and, thus, is suitable only for delay-insensitive applications. To overcome this limitation, we develop a location-fair adaptive threshold policy that offers 3.6 dB power-efficiency improvement over traditional TDMA.
520 $a For CDMA systems, an <italic>N</italic>-choose-<italic>n</italic> operation, where <italic>n</italic> out of <italic>N</italic> users are chosen to transmit at a time, is introduced. The set of feasible pairs (<italic>N</italic>, <italic> n</italic>), which ensures every user a desired average throughput, is characterized. The optimal <italic>N</italic>-choose-<italic>n</italic> operation is proved to be ranking-based, i.e., selecting the <italic>n</italic> users with the largest channel gains maximizes power-efficiency. The resulting system, referred to as Ranking CDMA, is 14 dB more power-efficient than traditional CDMA, but lacks location-fairness. This deficiency is alleviated by a location-fair Adaptive Ranking CDMA that is still 5 dB more power-efficient than traditional CDMA.
590 $a School code: 0127.
650 4 $a Engineering, Electronics and Electrical. $3 626636
650 4 $a Engineering, System Science. $3 1018128
690 $a 0544
690 $a 0790
710 2 0 $a University of Michigan. $3 777416
773 0 $t Dissertation Abstracts International $g 64-06B.
790 1 0 $a Kabamba, Pierre T., $e advisor
790 1 0 $a Meerkov, Semyon M., $e advisor
790 $a 0127
791 $a Ph.D.
792 $a 2003
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