中文摘要：

针对在Underlay频谱共享方式下的认知无线网络动态频谱分配问题，在满足主用户服务质量（QoS）的前提下，建立一种非合作博弈模型，并设计其效用函数。在借鉴VCG机制的基础上，设计相应的收益函数，提出一种可以最大化认知无线网络系统吞吐量且保证公平性的分布式动态频谱分配算法。仿真结果表明，该算法收敛速度快、公平性强。

英文摘要：

A distributed algorithm for dynamic spectrum allocation for the cognitive users coexisting with primary users in an Un‐derlay spectrum sharing paradigm was presented .The problem was modeled as non‐cooperative game model and the utility func‐tion was designed .Based on VCG mechanism ,an algorithm based on the VCG （vickrey‐clarke‐groves） mechanism was proposed for spectrum allocation between secondary transmissions that guaranteed the QoS for PUs .The algorithm aims to find the opti‐mal and fair assignment of secondary transmissions to spectrum bands that maximizes their sum data rate .Results from simula‐tion experiment show that the algorithm converges faster and has strong fairness .