The invention relates to a receiver and a CCA detection device and a method in a PLC communication system. The receiver includes a programmable gain amplifier, analog to digital converter, sampling rate conversion filter, DC filter, CCA detection device, and synchronization and demodulation module, including: CCA detection device for the sampling rate conversion filter and DC filter after the channel data were filtered with a band-pass filter sampling value and peak value detection and treatment; in the free channel assessment after the output of clear channel assessment results, trigger synchronization and demodulation module, input signal receiving. It can achieve better detection performance, and overcome the existing CCA detection methods used in PLC communications error detection and omission problems.
【技术实现步骤摘要】
【技术保护点】
1.一种PLC通信系统的接收机,其特征在于,包括可编程增益放大器,模拟数字转换器,采样率变换滤波器,去直流滤波器,CCA检测装置,以及同步和解调模块,其中:所述可编程增益放大器,用于调整输入信号的幅度;所述模拟数字转换器,用于将所述可编程增益放大器调整后的输入的模拟信号转换成数字信号;所述采样率变换滤波器,用于对所述模拟数字转换器输出的用于过采样的数字信号,根据预设的采样率进行采样抗混叠滤波;所述去直流滤波器,用于将经过所述采样率变换滤波器进行采样滤波后的输出信号,消除其直流分量;所述CCA检测装置,用于将经过采样率变换滤波和去直流滤波后的信道采样值数据进行带通滤波处理,然 ...
【技术特征摘要】
【专利技术属性】
技术研发人员:李彬,李立,孙春光,余建华,鲍妍,王玮,范振伟,曹培磊,付华丰,吴肖亮,
申请(专利权)人:杭州百富电力技术有限公司,
类型:发明
国别省市:86
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