Patent ID: 7392450

Claim:
A method for processing a received signal in a PHY (Physical) layer of a receiver in a packet-based communication system, comprising the steps of: compensating the received signal for a signal receiving error in a current packet with an estimated data obtained by re-using a previously latched estimated data to generate a portion of a compensated signal when a number of successive times of estimation failures in previous packets is smaller than a predetermined number; compensating the received signal for the signal receiving error in the current packet with an estimated data obtained by using a training sequence in the current packet to generate the portion of the compensated signal when the number of successive times of the estimation failures in the previous packets is greater than the predetermined number; decoding the compensated signal as a decoded signal and delivering the decoded signal to a MAC (Medium Access Control) layer of the receiver; receiving from the MAC layer a signal for indicating whether or not the receiver is an intended recipient of the current packet; determining whether or not the current packet is received correctly; incrementing the number of successive times of estimation failures by one if the receiver is an intended recipient of the current packet and the current packet is not received correctly; and latching the estimated data used in the current packet if the receiver is an intended recipient of the current packet and the current packet is received correctly.