Wireless modem and operation method thereof

A wireless modem, comprising:

• a receiving unit, configured to receive a communication signal and a reference signal, wherein the communication signal is a paging early indicator (PEI) signal, a paging signal or a radio resource management (RRM) signal;
• a storage unit, configured to buffer the communication signal when the communication signal is received;
• a synchronization unit, configured to perform a synchronization procedure when the reference signal is received;
• a compensation unit, configured to fetch the communication signal from the storage unit when the synchronization procedure is finished, and perform a compensation procedure on the communication signal;
• and
• a demodulation unit, configured to demodulate the communication signal which is compensated,
• wherein a duration for receiving the communication signal is overlapped with a duration for receiving the reference signal in an identical time slot.