SUN Yan,PENG Dai-yuan,LIANG Hong-bing.Resource Allocation in Cognitive Femtocells with Imperfect Spectrum Sensing[J].Journal of Chengdu University of Information Technology,2016,(01):35-41.
基于不完美频谱感知的认知Femtocells 资源分配算法研究
- Title:
- Resource Allocation in Cognitive Femtocells with Imperfect Spectrum Sensing
- 文章编号:
- 2096-1618(2016)01-0035-07
- Keywords:
- Femtocell; cognitive radio; spectrum sensing; resource allocation
- 分类号:
- TP393. 09
- 文献标志码:
- A
- 摘要:
- 针对Macrocell-Femtocell 同频异构网络中基于资源分配的干扰抑制问题,将Femtocell 与认知无线电技术 有效地结合在一起,提出一种新的基于不完美频谱感知的认知Femtocell 网络资源分配算法。算法在满足认知家庭 用户的服务质量,保证宏用户通信质量不受影响前提下,联合子信道与功率分配,最大化认知Femtocell 网络系统容 量。仿真证明认知型Femtocell 相比于传统型Femtocell 可以获得更高的家庭基站网络系统容量,并且性能超过约 15%;同时,算法中宏基站用户受到的平均跨层干扰比基于完美频谱感知的算法的低,而且不会高于跨层干扰限 制。
- Abstract:
- In this paper , we combine femtocell and cognitive radio technology together effectively and propose a novel network resource allocation scheme for cognitive femtocell based on imperfect spectrum sensing method. This proposed joint sub-channel and power allocation algorithm can suppress the co-channel interference in heterogeneous networks. The target of this proposed resource allocation algorithm is to maximize the sum of the throughput of all femtocell users under the Quality of Servise constraints of both femtocell users and macro communication combining the channel and power allocation method. Simulation proved that the all femtocells capacity of cognitive femtocell networks is more about 15% than that of the traditional femtocell networks; Meanwhile, the performance of the cross layer interference suppres- sion and the spectrum utilization of the proposed algorithm is superior to that of the algorithm based on perfect spectrum sensing method, the average cross layer interference of user of macro will not be higher than the cross layer interference limit.
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备注/Memo
收稿日期:2016-02-02 基金项目:国家高技术研究发展计划资助项目(2015AA01A705)