Multi-carrier constant envelope signal scheme for power and...

Details Multi-carrier constant envelope signal scheme for power and... Multi-carrier constant envelope signal scheme for power and...

2006-06-09

2009-11-10

Phu, Phuong (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S130000, C375S260000, C375S135000, C375S261000, C375S296000, C370S335000

Reexamination Certificate

active

07616678

ABSTRACT:
A technique for combining a plurality of signals to form a multi-carrier constant-envelope composite signal includes generating a constant-amplitude inphase (I) composite signal based on a majority vote of a first set of signals and generating a constant-amplitude quadrature (Q) composite signal based on a separate majority vote of a second set of signals. The I and Q components of a carrier signal are respectively modulated with the I and Q composite signals and combined to form the constant-envelope composite signal. In the case where a single offset carrier code is a constituent of the constant-envelope composite signal, a scale factor is applied to one of the I and Q composite signals to equalize the power of the I and Q components of the offset carrier code.

REFERENCES:
patent: 6996080 (2006-02-01), Orr
patent: 7035245 (2006-04-01), Orr et al.
patent: 7505506 (2009-03-01), Djuknic et al.
patent: 2002/0075907 (2002-06-01), Cangiani et al.

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