Methods and devices for signal detection and channel estimation, and associated computer program

A method for channel estimation in a communication system including a plurality of communication channels, from a plurality of noisy values respectively representative of the transmission through said communication channels, propagation in said communication channels being characterized by at least one variable, a set of values able to be taken by said at least one variable being divided into a plurality of ranges, said method comprising:

• receiving signals respectively transmitted in the plurality of communication channels;
• detecting a signal corresponding to a value of said at least one variable included in one range among the plurality of ranges by comparing, with a predetermined threshold, a value taken by a correlator linked to the one range and calculated as a function of the noisy values;
• and
• estimating the value of the at least one variable in the range including the value of said variable corresponding to the detected signal, the estimating comprising determining an intermediate value of said at least one variable by comparing windowed correlators corresponding to the range including the value of said at least one variable corresponding to the detected signal.