Patent ID: 8744013
Filing Date: 2014-06-03
Classification: H04J,H04L

Abstract:
1. A method for channel estimation in an OFDM system, as including: quantising a signal to noise ratio of a received reference signal, using the quantised signal to noise ratio to select a G matrix from a set of G matrices indexed by signal to noise ratio, the G matrices being precalculated for a plurality of signal to noise ratios using a fixed Doppler frequency and a fixed delay spread, multiplying the selected G matrix by least squares (LS) estimates for the reference signal in order to obtain a channel estimation, and splitting the LS estimates into streams corresponding to sub-sections of the entire bandwidth of the reference signal, wherein the multiplying the selected G matrix by LS estimates for the reference signal involves multiplying the selected G matrix by the LS estimate stream for each bandwidth sub-section to obtain a set of channel estimations.