环境噪声干扰对无线通信接收灵敏度的影响分析

Analysis on the Influence of Environmental Noise Interference on Receiving Sensitivity of Wireless Communication

无线通信中,接收机内部噪声、环境干扰噪声共同影响接收灵敏度。文章分析了利用等效噪声温度计算接收灵敏度的方法,建立仿真模型,仿真施加白噪声干扰、单音干扰、宽带信号干扰及其组合干扰对接收灵敏度的影响。对比仿真及利用等效噪声温度计算输出信噪比结果,得出等效噪声温度计算接收灵敏度的准确性。

In wireless communication,the receiver internal noise and environmental interference noise mutually affect the receiving sensitivity.This paper analyzes the method of calculating the receiving sensitivity by using the equivalent noise temperature,establishes a simulation model to simulate the influence of white noise interference,single-tone interference,broadband signal interference and their combined interference on the receiving sensitivity.Comparing the simulation and using the equivalent noise temperature to calculate the output signal-to-noise ratio results,and calculates the accuracy of the receiving sensitivity by obtained equivalent noise temperature.