Cooperative Game and Relay Pairing\ in Cognitive Radio Networks
首发时间:2015-12-31
Abstract:To optimize the overall utility of a cognitive radio networks (CRN), this paper focuses on cooperative spectrum access in a CRN, where secondary users (SUs) serve as relays for primary users (PUs) to improve their throughput, and in return SUs can gain transmission opportunities. this paper first investigates the cooperation between a single pair of PU and SU with Stackelberg game model, where PU determines access time allocation while SU determines relaying power for the PU. Based on the analytical results, cooperation pairing between multiple PUs and SUs is modeled as a bipartite matching problem and solved using extit{Gale-Shapley} algorithm. Numerical results demonstrate that, with the proposed schemes, overall utility for PUs and SUs can be balanced with low computational complexity.
keywords: Cognitive Radio, Cooperative Communications, Stable Matching
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认知无线电网络中的协作博弈与中继转发
摘要:为了提高整个认知无线电网络的性能,本文研究了认知无线电网络的协作频谱分配算法。在该认知无线电网络中,次用户通过中继转发主用户的数据来提高主用户的吞吐率。作为奖励,次用户会得到传输自己数据的机会。本文首先研究了单个主用户和次用户的协作模型,将其构建为斯坦伯格博弈模型。作为博弈的两个角色,主用户决定协作时间片段分配,而次用户决定协作时其中继转发的传输功率大小。然后使用上述单个协作的结果,整个网络的多个主用户和次用户协作模型通过构建为二部图分配问题,最终使用稳定匹配算法来解决。最后的仿真结果显示,通过使用本文的算法,主用户网络和次用户网络都会得到一个较高且平衡的性能,且该算法复杂度低。
关键词: 认知无线电,协作通信,稳定匹配
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