FIELD: information technology.
SUBSTANCE: communication device includes a receiving antenna; a receiver adapted to receive a signal from the receiving antenna; an initial channel estimation module adapted to select a channel among one or more channels in a communication system and for determining for the selected channel the initial channel estimation based on the received signal; a conversion module adapted to convert the initial channel estimation into the initial pulse response estimation containing a series of samples; a filtration module adapted to select a series of samples and generate a truncated initial pulse response estimation by setting into zero samples in the initial pulse response estimation, which are not in the selected series of samples; and a module for estimating channel with maximum likelihood, which is adapted to calculate a weighted pulse response estimation in the time domain using the truncated pulse response estimation in the time domain for the selected channel and for calculating the estimation of the channel with maximum likelihood for the selected channel through conversion into the frequency domain the weighted pulse response estimation in the time domain.
EFFECT: improvement and optimisation of estimating channel response in wireless communication system.
24 cl, 7 dwg
