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在保证主用户服务质量的前提下,将接入点(AP)以认知用户的身份接入到主用户频谱,合理地分享主用户信道资源.将信道分配问题建模为整数线性规划问题,提出一个混合最优信道分配算法(HOCA),该算法基于一种有权连接图的最小生成树,可以快速准确地在主用户和认知AP频谱中为主用户和认知AP分配干扰最小的信道.最后,将HOCA算法和其他2种信道分配算法,次最优机会信道分配和次最优信道分配-2算法进行了数值分析,验证了HOCA在吞吐量性能的有效性.
On the premise of guaranteeing the quality of primary user’s service, access point (AP) accesses spectrum of primary user as cognitive user to reasonably share channel resources of primary user.Channel assignment problem is modeled as integer linear programming problem, A Hybrid Optimal Channel Allocation Algorithm (HOCA) is proposed based on a minimum spanning tree with the right to connect graph, which can quickly and accurately assign the primary user and cognitive AP spectrum with the least interference Finally, the HOCA algorithm and other two kinds of channel assignment algorithms, the second best opportunistic channel assignment and the second-best channel assignment-2 algorithm are analyzed numerically to verify the validity of HOCA in throughput performance.