Patent ID: 8787508
Filing Date: 2014-07-22
Classification: H04L

Abstract:
1. A channel estimation method, comprising: extracting pilot data in a received signal; performing pilot channel estimation by using the extracted pilot data to obtain transmission coefficients of multiple groups of pilot channels; and obtaining a transmission coefficient of a data channel through non-linear interpolation processing by using the obtained transmission coefficients of the multiple groups of pilot channels; using the obtained transmission coefficients of the pilot channels to obtain a transmission coefficient of a data channel closest to a pilot symbol through linear interpolation; using the transmission coefficient of the data channel to perform equalization and hard decision for a corresponding received frequency domain signal on the data channel; using hard decision data obtained through hard decision and the corresponding received frequency domain signal on the data channel for channel estimation to obtain a transmission coefficient with elevated precision on the data channel; and using the transmission coefficient with elevated precision on the data channel to obtain transmission coefficients of other data channels closest to the data channel through linear interpolation.