Asynchronous digital correlator and demodulators including a cor

Details Asynchronous digital correlator and demodulators including a cor Asynchronous digital correlator and demodulators including a cor

1989-04-04

1990-06-12

Cangialosi, Salvatore

Pulse or digital communications

Repeaters

Testing

H04L 900

Patent

active

049339524

ABSTRACT:
A demodulator to demodulate a complex signal formed by two carriers, in quadrature, the spectrum of which is spread by a pseudo-random signal, and which are modulated by an M-ary, Walsh, code comprises:

REFERENCES:
patent: 4730340 (1988-03-01), Frazier, Jr.
Proceedings of the Melecon '87 Mediterranean Electrotechnical Conference, 34th. Congress on Electronics, Joint Conference, pp. 157-161; M. K. Sust et al.: "All Digital Signal Processing in a Spread Spectrum Communication System", *FIG. 2*.
IEEE Transactions on Communications, vol. COM-32, No. 2, Feb. 1984, pp. 199-201.
IEEE, New York, U.S.A.; J. Das: "A Technique for Improving the Efficiency of M-ary Signaling", *FIGS. 1b, 2c*.
IEEE 1983 International Symposium on Circuits and Systems, Newport Beach, Calif., May 2-4, 1983, vol. 2, des 3, pp. 522-525, IEEE; A. Corry et al., "Architecture of a CMOS Correlator", *p. 523, paragraphe: Correlation Algoritym, FIG. 2*.

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