摘要
普通信号在信道传输过程中容易受到高斯噪声的干扰,为了抑制这种干扰,通常在信道的输入端设置一个带通滤波器。因此带通滤波器的输出是原始信号与窄带高斯噪声的混合波形。通信系统中的输出通常就是这种混合波形,所以研究这种合成信号的包络和相位概率分布特性至关重要,经过仿真发现正弦波加窄带高斯噪声的合成波服从莱斯分布。
Ordinary signals are easily interfered by Gauss noise during channel transmission. In order to suppress such interference, a band-pass filter is usually set at the input side of the channel. Therefore, the output of band-pass filter is a mixed waveform of original signal and narrow band Gauss noise. The output of the communication system is usually such mixed waveform, so it is very important to study the probability distribution characteristic of the envelope and phase of the synthetic signal. It is found that the synthetic wave composed of sine wave and the narrow-band Gauss noise wave obeys the Leslie distribution by simulation.
作者
李敏峰
欧阳帆
LI Min-feng;OU Yang-fan
出处
《信息技术与信息化》
2018年第7期173-174,179,共3页
Information Technology and Informatization
关键词
正弦波
窄带高斯噪声
通信系统
莱斯分布
sine wave
narrowband Gauss noise
communication system
Rice distribution
