Device and method for eliminating channel effect

摘要

A device for eliminating a channel effect is provided. A time-domain channel estimating unit generates a channel estimation result according to a first reference signal. A fast Fourier transform (FFT) unit performs FFT on the channel estimation result to generate a plurality of channel frequency responses corresponding to a plurality of frequency indices. An adjusting unit receives a plurality of input signals, and determines whether to adjust the input signal of each of the frequency indices according to the amplitude of the channel frequency response of each of the frequency indices to generate a set of adjusted signals. An inverse fast Fourier transform (IFFT) unit performs IFFT on a set of output signals associated with the set of adjusted signals to generate a feedback signal. The time-domain channel estimating unit further generates another channel estimation result according to a second reference signal and the feedback signal.

主权项

1. A device for eliminating a channel effect, comprising:
a time-domain channel estimating unit, generating a channel estimation result according to a first reference signal; a fast Fourier transform (FFT) unit, performing FFT on the channel estimation result to generate a plurality of channel frequency responses corresponding to a plurality of frequency indices; an equalization unit, generating a plurality of equalized signals corresponding to the plurality of frequency indices according to the plurality of channel frequency responses; a decision unit, generating a plurality of decision processed signals corresponding to the plurality of frequency indices according to the plurality of equalized signals; an adjusting unit, receiving a plurality of decision processed signals corresponding to the plurality of frequency indices, and determining whether to reduce an amplitude of the plurality of decision processed signals of each of the frequency indices according to an amplitude of the channel frequency response of each of the frequency indices to generate a plurality of adjusted decision processed signals; and an inverse fast Fourier transform (IFFT) unit, performing IFFT on the plurality of decision processed signals to generate a feedback signal; wherein, the time-domain channel estimating unit further generates another channel estimation result according to a second reference signal and the feedback signal.