Patent ID: 8259865
Filing Date: 2012-09-04
Classification: H04L

Abstract:
1. A method for adapting a channel estimation scheme in a transceiver in a communication system, the method comprising: determining at least one of an estimate of a power delay profile of a channel and a time correlation of the channel; determining a channel estimation scheme based on at least one of the determined power delay profile and time correlation of the channel; defining at least two cost functions corresponding to respective channel estimation schemes, where each cost function is based on an error between a computed channel estimate and an ideal channel estimate; determining an estimation of the time correlation of the channel and the power delay profile through calculating a plurality of parameters to be used in calculating each of the at least two cost functions, wherein at least one of the plurality of parameters is a time correlation parameter based on at least one Doppler correlation coefficient that correlates to a speed of the transceiver; calculating a cost value for each of the at least two cost functions using the plurality of parameters; and selecting, from a plurality of predetermined channel estimation schemes, a channel estimation scheme based on a comparison of the values of the at least two cost functions.