Apparatus and method for estimating channel in wireless communication system

摘要

An apparatus method of estimating a channel in a wireless communication system are provided. The method includes determining channel estimation values of pilot tones, selecting data tones to which a first estimation scheme is applied, according to frequency selectivity and time-axis variance of the channel, determining channel estimation values of the selected data tones 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 determined by the first estimation scheme.

主权项

1. 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.