1. A method of searching for propagation paths in a digital impulse response estimate of a channel relating to a radio system in order to use the paths in a radio channel estimation, the paths corresponding to the highest amplitude values in the digital impulse response estimate of the channel, the method comprising: dividing, by a processing device, the impulse response estimate temporally into at least two subsignals that occupy different predetermined periods of time; determining, by the processing device, whether a distribution of the amplitude values of at least one subsignal is gaussian or non-gaussian using a degree of symmetry associated with the distribution of the amplitude values; and searching, by the processing device, for at least a highest amplitude value in each sub-signal, which is determined to be non-gaussian, to form a radio channel to be used in the radio channel estimation, the radio channel including each propagation path that corresponds to the highest amplitude value in each subsignal determined to be non-gaussian.