公开(公告)号：US20200220751A1

公开(公告)日：2020-07-09

申请号：US16699356

申请日：2019-11-29

申请人： Commissariat A L'Energie Atomique et aux Energies Alternatives

发明人： Michael Pelissier ,  Marguerite Marnat

IPC分类号： H04L27/00 ,  H04L25/49 ,  H04L27/12

摘要： The present invention relates to a wavelet bandpass sampling method, with low aliasing and a corresponding device. The analogue signal to sample is correlated with a sequence of wavelets succeeding each other with a rate fp of which the positions in the sequence are temporally modulated from arguments of a CAZAC sequence, notably a Zadoff-Chu sequence. The correlation results are next sampled at a frequency fs≤fp and digitally converted to provide a compressed representation of the signal. The temporal modulation of the positions of the wavelets makes it possible to obtain incoherent aliasing of the correlation signal in the sampling band and thereby to reduce aliasing.