摘要
针对动态频谱资源分配过程中采用载波聚合的方式出现的信息碰撞问题,提出一种碰撞受限下的最佳子信道数聚合方案。通过分析聚合子信道数分别对系统的信道容量和信道间碰撞概率两个方面因素的影响,同时综合考虑了系统的静态信道和动态信道的性能参数,推导出动态子信道数的最佳聚合数目。并对比分析了在不同聚合信道数下的系统容量和碰撞概率,结果表明该方案在提升信道容量和降低碰撞概率方面都有很大的改善,促进了频谱资源的有效利用。
For collisions between the information caused by the carrier aggregation during the process of the dynamic spectrum resource allocation, this paper proposed an optimal sub-channel aggregation scheme under collision limited. Through the anal- ysis of aggregated channel number impacts on the channel capacity of the system and collision probability, while considering the performance parameters of static and dynamic channels of the system, it derived the optimal aggregate number of dynamic sub channel. In addition, it proposed a comparative analysis of capacity and the probability of collision in the different chan- nels of system. Results showed that the scheme has greatly improved in enhancing the channel capacity and reducing the colli- sion probability and promoting the effective utilization of the spectrum resource.
出处
《计算机应用研究》
CSCD
北大核心
2016年第11期3401-3403,3416,共4页
Application Research of Computers
基金
国家自然科学基金资助项目(61301124)
重庆邮电大学科研基金项目(A2012-16)
重庆高校创新团队建设计划
关键词
动态频谱资源
载波聚合
信道容量
信息碰撞
碰撞概率
dynamic resource allocation
carrier aggregation
channel capacity
information collision
collision probability
