协作认知无线电网络技术
Techniques for Cooperative Cognitive Radio Networks
摘要：
频谱是无线通信的基本资源。频谱的特殊部分用于军事目的，政府将一些频段出售给广播和移动通信公司用于商业用途，其他如ISM（工业、科学和医疗）频段免费供公众使用。随着频谱变得过于拥挤，似乎有两种可能的解决方案：将频率限制提高到60 GHz及以上的频率，或者重新聚合密集使用的许可频段。新的认知无线电（CR）方法为频谱稀缺提供了可行的解决方案。许可频谱带的二次利用可以提高频谱使用率，并为频谱缺乏引入可靠的解决方案。在这样的认知无线电网络中，次用户可以在为授权主用户保证最低服务质量的约束下接入频谱。本文主要研究认知无线电网络中存在多个次用户共享空闲频谱空洞的情况下的频谱共享技术。更具体地说，我们介绍了两个协作的认知无线电网络中，次用户与主用户合作，提供主用户的数据。
英文摘要：
The frequency spectrum is an essential resource for wireless communication. Special sections of the spectrum are used for military purposes, governments sell some frequency bands to broadcasting and mobile communications companies for commercial use, others such as ISM (Industrial, Science and Medical) bands are available for the public free of charge. As the spectrum becomes overcrowded, there seem to be two possible solutions: pushing the frequency limits higher to frequencies of 60 GHz and above, or reaggregating the densely used licensed frequency bands. The new Cognitive Radio (CR) approach comes with the feasible solution to spectrum scarcity. Secondary utilization of a licensed spectrum band can enhance the spectrum usage and introduce a reliable solution to its dearth. In such a cognitive radio network, secondary users can access the spectrum under the constraint that a minimum quality of service is guaranteed for the licensed primary users. In this thesis, we focus on spectrum sharing techniques in cognitive radio network where there is a number of secondary users sharing unoccupied spectrum holes. More specifically, we introduce two collaborative cognitive radio networks in which the secondary user cooperate with the primary user to deliver the data of the primary user.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
