These new type Digital PLC use SSB, QAM or TCM modulation technology and occupy the bandwidth between several kHz to dozens of kHz with the transmission speed less than 100kbps.
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- 新型数字载波机使用的调制技术有SSB,QAM和TCM等,占用带宽为几kHz到几十kHz,数据传输率最高不超过100kbps。