摘要
评估了室内衰落信道不同扩展带宽条件下低复杂度SRake接收机的BER性能.信道模型为SV/IEEE 802.15.3 a模型.通过重采样算法将连续时间模型转化为离散时间模型.然而,重采样后,可分辨多径分量的幅度分布很难描述,因此通过仿真方法分析不同扩展带宽下SRake接收机性能.仿真表明对于一定数目的Rake支路和一定的接收功率,存在最优扩展带宽.最优扩展带宽随着Rake支路的增加而增加,且对于CM1到CM4模型有所不同.
We evaluated the BER performance of the reduced - complexity SRake receiver with different spreading bandwidth in indoor fading channels. The channel model is SV/IEEE 802. 15. 3a model. By resampling we changed the continuous time arrival model to the discrete time arrival model. However, the amplitude distribution of the resolvable multipath components is difficult to describe after resampling, so we analyzed the performance of SRake receiver with different spreading bandwidth by simulation. Results show that, for a fixed number of Rake fingers and a fixed receiving energy, there is an optimum spreading bandwidth. The optimum bandwidth increases with the increasing number of Rake fingers and varies from CM1 model to CM4 model.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2008年第2期255-258,共4页
Journal of Harbin Institute of Technology
基金
国家自然科学基金重点项目(60432040)
