LTE无线网络多频段弱信号快速捕捉算法

Fast Multi Band Weak Signal Acquisition Algorithm in LTE Wireless Network

由于传统LTE无线网络多频段弱信号捕捉算法的运算量大,计算较为复杂,不能实现对弱信号的快速、精准捕捉。因此提出LTE无线网络多频段弱信号快速捕捉算法。通过构建LTE无线网络通信系统模型,确定系统稳定运行的必要条件,利用可靠性函数计算系统成功服务概率;根据计算结果,结合FFT快速捕捉算法的基本原理,对LTE无线网络通信信号做正交与积分处理,采用差分相干算法去除运算损耗,从而捕捉到LTE无线网络通信系统中多频段弱信号的载波频率,并对其做精化处理,从而达到LTE无线网络多频段弱信号快速捕捉的目的。仿真结果证明,所提算法在相同的无线网络通信环境下具有更高的捕捉效率,且捕捉精度远远高于其他方法。

Due to the large amount of computation and complexity in traditional algorithms,it is unable to achieve fast and accurate acquisition for weak signals.Therefore,an algorithm of fast acquisition for multi-band weak signal in LTE wireless network was put forward.Firstly,the model of LTE wireless network communication system was used to determine the necessary conditions for stable operation of system,and then the reliability function was used to cal-culate the probability of successful service of system.According to the calculation results and the basic principle of FFT fast capture algorithm,the orthogonal and integral processing was performed on LTE wireless network communi-cation signal,and the difference coherence algorithm was used to remove the computing loss,so as to capture the car-rier frequency of multi-band weak signal in LTE wireless network communication.Finally,the carrier frequency was refined to achieve the fast acquisition of multi-band weak signal in LTE wireless network.Simulation results show that the proposed algorithm has higher capture efficiency in the same wireless network communication environment,and the capture accuracy is much higher than other methods.