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Research on Spectrum Management for Cognitive Radio Networks in Dynamic Spectrum Market

Author: SunZuoZuo
Tutor: LiKeQiu
School: Dalian University of Technology
Course: Applied Computer Technology
Keywords: Dynamic channel allocation Space to copy Time to copy
Type: Master's thesis
Year: 2010
Downloads: 18
Quote: 0
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With the rapid growth of wireless communication services, and limited radio spectrum resources, fixed frequency radio spectrum management strategy apparently been unable to meet the growing demand for wireless services. The emergence of cognitive radio technology, which greatly improves the use of the spectrum to improve spectrum utilization, ease the contradiction between the lack of radio spectrum resources and the growing demand for wireless services. Cognitive radio applications not only need to restrict the use of the spectrum, the need for innovative use of spectrum. Cognitive radio channel management methods based on market model can effectively promote the application of cognitive radio technology. This article is based on the market model of how to effectively manage the radio spectrum resources. Chapter constructed cognitive radio management market model, network model, based on reliability and cost requirements based on meeting the sub-user channel channel allocation problem. Use of the copied channel allocation based on space technology to solve the problem, the parallel transmission technology to meet the demand of the times a user channel reliability, we propose a heuristic algorithm to meet the reliability requirements of the secondary user channel premise achieve times as small as possible the purpose of user fees. The simulation results show compared to the Non-SAS radio channel allocation techniques, we launched space-based replication HA-SAS radio channel allocation technique to improve the channel utilization by nearly 25%, the average user job submission number by nearly 20 %, after a period of time after the market regulation, the price of the channel, increasing reliability and increase prices stabilized secondary users purchase channel. Chapter us improve our market model and how to allocate the channel in the case of secondary users operating on channel timeliness undemanding meet more user needs. We first assume that a cognitive radio zone, any primary user of the channel can be used for the second user, and thus the problem model idealized. Idealized model, we give the the McAfee channel allocation and Trust channel allocation technology applications. Finally, we improved the McAfee channel allocation and Trust channel allocation, given a time-based replication the HA-SAS channel allocation.

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