Patent ID: 8731033
Filing Date: 2014-05-20
Classification: H04L

Abstract:
1. A channel estimator, comprising: a storage module, for storing a plurality of first channel responses of first pilot signals over a plurality of continuous pilot sub-channels, and for storing a plurality of second channel responses of second pilot signals over a scatter pilot sub-channel; and a calculation module, for calculating a third channel response at a time point with no second pilot signal over the scatter pilot sub-channel according to the first channel responses of the first pilot signals and the second channel responses of the second pilot signals; wherein the second channel responses of the second pilot signals comprise channel responses of the second pilot signals before and after the time point with no second pilot signal in the scatter pilot sub-channel, and a number of the channel responses of the second pilot signals before the time point is more than a number of the channel responses of the second pilot signals after the time point and wherein a plurality of parameters are calculated according to the first channel responses of the first pilot signals using a least-square method between a matrix of first channel responses at said time point, and a matrix of first channel responses at time points corresponding to said second channel responses.