Coherent detector for quadrature phase shifted keying (qpsk)...

Details Coherent detector for quadrature phase shifted keying (qpsk)... Coherent detector for quadrature phase shifted keying (qpsk)...

H - Electricity

04

L

H04L 27/22 (2006.01) H03D 3/00 (2006.01) H04L 27/227 (2006.01) H04L 27/00 (2006.01)

Patent

CA 2054364

The .pi./4-QPSK (quadrature phase shifted keying) coherent detector of the present invention has a vector input and an output comprising recovered data in bit pair form. The .pi./4-QPSK coherent detector recovers bursts of data, in a TDMA system, that has been encoded in an amplitude modulated vector's phase angle. The .pi./4-QPSK coherent detector detects the .pi./4- QPSK constellation of the incoming modulated signal and outputs the recovered data stream.

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