| 摘要 |
Process for the blind demodulation of a linear waveform source or transmitter in a system comprising one or more sources and an array of sensors and a propagation channel. The process comprises at least the following steps: the symbol period T is determined and sampled to Te such that T=ITe (I being an integer); a spatio-temporal observation z(t), the mixed sources of which are symbol trains from the transmitter, is constructed from the observations x(kTe); an ICA-type method is applied to the observation vector z(t) in order to estimate the Lc symbol trains {am-i} that are associated with the channel vectors ĥz,j=ĥz(kj); the Lc outputs (âm,j, ĥz,j) are arranged in the same order as the inputs (am-i,hz(i)) so as to obtain the propagation channel vectors ĥz,j=ĥz(kj); and the phase αimax associated with the outputs is determined.
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