Patent ID: 6956913

Claim:
A process for non-coherent reception of a signal with spectrum spreading and DP (Differential Phase)-MOK (M-Ary Orthogonal Keying) mixed modulation over multiple paths, said process comprising: processing the signal in several M channels in parallel; in each channel, the signal is filtered by a filter adapted to a pseudo-random sequence specific to the channel; energy of the filtered signal is measured; said energy of the filtered signal is weighted by a weighting factor; a channel containing a weighted signal with a highest power is determined; a channel number of the highest power channel is decoded to reproduce first information symbols; selecting the filtered signal with the highest power, a differential phase demodulation is made of said selected filtered signal to produce multiple correlation peaks corresponding to multiple paths; energy of the multiple correlation peaks is calculated; said energy of the multiple correlation peaks is weighted by said weighting factor to provide weighted energy; said weighted energy is decoded to restore second information symbols; and determining an average of the multiple correlation peaks over a determined duration corresponding to several information symbols, said average forming said weighting factor.