Channel estimation for a multi-carrier telecommunication system

摘要

The present invention relates to a method for transmitting data by means of multiple carrying signals Cs 1 ,...Cs N through communication channels CH1,...CHN, which method involves a computation of channel parameters hsn (for n=1 to N) representative each of a response of said communication channels to one of said carrying signals. The method according to the invention includes a preliminary estimation step for generating preliminary estimates hp i (for i=1 to N), and a secondary estimation step for refining the preliminary estimates hp i by computing an average value of a correlation parameter, which average value is computed over at least two different carrying signals. The invention enables to pool together information produced in relation with different channels, and thus to perform almost instantaneously a channel response estimation on the basis of a very limited number of received pilot symbols