Patent ID: 8681852

Claim:
A communication method, configured to handle channel estimation by a communication device, comprising: receiving a time-domain OFDM symbol; converting the time-domain OFDM symbol to a frequency-domain OFDM symbol, wherein the frequency-domain OFDM symbol comprises a plurality of pilot sub-carrier received signals and a plurality of data sub-carriers received signals; extracting the plurality of pilot sub-carrier received signals from the converted frequency-domain OFDM symbol; estimating a plurality of first frequency-domain channel average responses corresponding to a plurality of pilot sub-carriers according to the extracted plurality of pilot sub-carrier received signals and a plurality of pilot sub-carrier transmitted signals; determining a pilot sub-carrier number parameter for a sub-carrier block according to a statistical information of channel delay; splitting all of the sub-carriers into a plurality of sub-carrier blocks according to the pilot sub-carrier number parameter; and estimating second frequency-domain channel average responses for all sub-carriers in the frequency-domain OFDM symbol according to first frequency-domain channel average responses of the pilot sub-carriers in all sub-carrier blocks.