Method and system for generating higher order modulations...

Details Method and system for generating higher order modulations... Method and system for generating higher order modulations...

2006-08-22

2006-08-22

Chang, Joseph (Department: 2817)

Modulators

Phase shift keying modulator or quadrature amplitude modulator

C375S130000, C380S268000

Reexamination Certificate

active

07095290

ABSTRACT:
Method and system for generating higher order modulations with QPSK modulators. A complex sequence of binary digits is input to QPSK modulators. The binary digits are mapped to constellation points and multiplied with weighting coefficient. Constellation points of higher order modulation are mapped to inputs of the QPSK modulator, and, after modulation QPSK symbols are summed to compose symbols of higher order modulation.

REFERENCES:
patent: 4241447 (1980-12-01), Epstein
patent: 2001/0038616 (2001-11-01), Fong et al.
patent: 2002/0067757 (2002-06-01), Philips et al.
patent: 0 583 059 (1994-02-01), None
patent: 0 768 782 (1997-04-01), None
patent: 0 982 905 (2000-03-01), None
patent: WO 00/48336 (2000-08-01), None

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