H - Electricity – 03 – D
Patent
H - Electricity
03
D
329/11
H03D 3/00 (2006.01) H04L 7/033 (2006.01) H04L 27/227 (2006.01) H04L 7/04 (2006.01)
Patent
CA 2019359
ABSTRACT OF THE DISCLOSURE: A particular signal sequence corresponding in a received signal to a symbol pattern consisting of a predetermined number of symbols at a symbol interval, is detected by sampling (45-48) into phase samples substantially at the symbol interval of a phase of a signal vector obtained by coherent detection (11) of the received signal, calculation (51-52) of phase differences, each between two consecutive phase differences. detection (56-5?) of consecutive instances of coincidence of each phase difference substantially with a predetermined phase difference, and determination (58-60) of presence of the signal sequence in the received signal when the instances of coincidence substantially reach in number to the predetermined number, Preferably, the sampling is carried out by making (11) I and Q signals represent the phase and converting (46-48) the I and Q signals to the phase samples by using a clock generator (45). When produced (46-47), I and Q digital signals represent their amplitudes, which are subjected to conversion (48) into the phase samples. The conversion, calculation, detection, and determination can be processed by a digital signal processor.
Corporation Nec
Smart & Biggar
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