移动通信设备中的多信道选取模型设计与改进

Design and improvement of multi-channel selection model for mobile communication device

传统的设备信道选取模型分析方法复杂、模型模拟器电路过于简化,应加以改进。提出并设计一种移动通信设备多信道选取模型并改进。介绍模型模拟器的组成以及仿真原理,通过改变移动通信距离偏角并添加白噪声,排除模型中的多普勒效应和通信噪声。改进模型模拟器A/D电路中的可控增益放大器,提高多信道中信号的干扰排除操作强度。用分布式计算系统替换原模型中的密集型计算系统,提高模型计算精度。实验结果表明,改进后的模型取得了更高的电平过载率和更短的衰减时间。

Since the analysis method of the traditional device channel selection model is complex, and the circuit of the model simulator is too simple, a multi-channel selection model for mobile communication device is proposed and designed. The composition and simulation principle of the model simulator are introduced. The declination angle of mobile communication distance is changed and the white noise is added to eliminate the Doppler effect and communication noise. The gain-controllable amplifier in A/D circuit of the model simulator was improved to enhance the elimination intensity of signal interference in the multi- channel. The distributed computing system is used to replace the intensive computing system in the original model to improve the computing accuracy of the model. The experimental results show that the improved model has high level overload rate and short fall time.