Patent ID: 9608844
Date: 2017-03-28
CPC Classifications: H04L

Claim:
1. A method for performing channel estimation on an Orthogonal frequency-division multiplexing (OFDM) signal, the method comprising: performing blind channel phase estimation on the OFDM signal to obtain channel phase information; and performing blind channel magnitude estimation on the OFDM signal to obtain channel magnitude information; wherein each of performing blind channel phase estimation on the OFDM signal and performing blind channel magnitude estimation on the OFDM signal comprises detecting and suppressing a signal path of the OFDM signal, and the method further comprising: determining a number of survival signal paths of the OFDM signal based on the channel phase information and the channel magnitude information; if the number of the survival signal paths is smaller than a threshold, performing coherent demodulation on the OFDM signal; and if the number of the survival signal paths is larger than the threshold, performing differential demodulation on the OFDM signal.