Patent ID: 8842751

Claim:
A method for estimating a channel of a receiving end in a wireless communication system, the method comprising: determining channel estimation values of pilot tones; selecting data tones as first semi-pilots, to which a first estimation scheme is applied, according to a frequency selectivity and a time-axis variance of the channel, wherein other data tones are selected as second semi-pilots between the pilot tones or the first semi-pilots on a same subcarrier according to a corresponding increased frequency selectivity or on a same symbol according to a corresponding increased time variance; determining channel estimation values of the data tones selected as the semi-pilots according to the first estimation scheme by using the channel estimation values of the pilot tones; and determining channel estimation values of the remaining data tones according to a second estimation scheme by using the channel estimation values of the pilot tones and the channel estimation values of the semi-pilots determined by the first estimation scheme.