摘要
在频率选择性复合Nakagami/lognormal衰落信道条件下,研究了层叠分布式天线系统(CascadeDistributedAntennaSystem——CDAS)采用混合SC/MRC分集的中断概率性能。针对中断概率性能,分析了多径密度函数(MultipathIntensityProfileMIP)衰减因子、空时分集维数、活动用户数、每比特平均接收信噪比以及衰落因子对系统性能的影响。仿真表明CDAS系统可以有效对抗衰落,提高系统容量,削弱对数正态阴影衰落影响。
In case of frequency-selective channel with Nakagami/lognormal composite fading, an outage probability analysis framework of cascade distributed antenna system （CDAS） with hybrid SC/MRC diversity receiver is investigated in this paper. With the outage probability formula, the influences of muhipath intensity profile （MIP）＇s decaying factor, spatial and temporal diversity order, number of users and shadowing factor is analyzed. Simulation results show that the CDAS can effectively combat fading, and improve the system capacity. It can also impair the impact of lognormal shadowing fading.
出处
《电波科学学报》
EI
CSCD
北大核心
2006年第5期756-762,共7页
Chinese Journal of Radio Science
基金
国家自然科学基金项目(60302015)
