Mobile Device performing Power Line Communication and operating method thereof

A mobile device includes; a power line communication ( PLC) module that communicates data with an external device via a power line, receives a first preamble signal from the external device during a first preamble interval, receives a voltage signal as the data during a data reception interval following the first preamble interval, and demodulates the voltage signal to provide a demodulated voltage signal, a frequency/duty detector that detects a frequency and a duty of the first preamble signal, and a control circuit that performs signal a data determination operation on a demodulated voltage signal during a data period and using the first detected frequency and the first detected duty. 一种移动设备包括：电力线通信模块(PLC)，所述电力线通信模块经由电力线与外部设备通信数据，在第一前导码间隔期间从所述外部设备接收第一前导码信号，在所述第一前导码间隔之后的数据接收间隔期间接收作为所述数据的电压信号，以及解调所述电压信号以提供解调后的电压信号；频率/占空比检测器，所述频率/占空比检测器检测所述第一前导码信号的频率和占空比；和控制电路，所述控制电路在数据周期期间并且使用所述第一检测频率和所述第一检测占空比对所述解调后的电压信号执行数据确定操作。