认知无线电网络中频谱分配算法

Survey on Spectrum Allocation Algorithms for Cognitive Radio Networks

随着新型无线业务的不断发展,频谱供需矛盾日益明显.认知无线电网络被认为是实现动态频谱共享、缓解频谱供需矛盾的重要途径,近年来相关研究受到了广泛关注.本文对认知无线电网络中的频谱分配研究进展进行了分析.论文首先介绍了认知无线电网络的技术背景,分析了认知无线电网络中频谱分配的关键问题和算法设计目标.在此基础上总结了主流频谱分配模型的设计思想与技术特点,并详细描述了各模型经典分配算法的实现机制.最后,对频谱分配研究趋势进行了展望.

With the explosion of novel wireless applications, the increasing growth of spectrum requirement has outpaced available spectrum resources. Cognitive Radio Network （CRN） has emerged as a promising solution to address the above dilemma by dynamically sharing spectrum among users. Recently, CRN technology has attracted great research interests as well as efforts. In this paper, we review the state-of-the-art of spectrum allocation techniques in CRNs. We first illustrate the technical background of CRNs, and then analyze the key issues in spectrum allocation algorithms design. Following that we review the design rationale and technical feature of typical allocation models, and further investigate the implementation mechanism of classical algorithms for each model. Finally, we envision the possible issues for future work on spectrum allocation.