Method and apparatus for rotating a phase of a modulated signal

Details Method and apparatus for rotating a phase of a modulated signal Method and apparatus for rotating a phase of a modulated signal

2006-09-12

2006-09-12

Tse, Young T. (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

C455S126000, C455S127200

Reexamination Certificate

active

07106782

ABSTRACT:
Techniques to adjust the phase rotation of a modulated signal to compensate for the phase rotation introduced by circuit elements associated with the transmit signal path. In one implementation, at least one control signal is received, with each control signal being provided to adjust a particular characteristic (e.g., gain, bias current) of one or more circuit elements (e.g., VGA, PA) associated with the transmit signal path. The circuit elements can be located directly in, or operatively coupled to, the transmit signal path. A phase rotation corresponding to an operating state defined by the received control signal(s) is then determined, and the phase of the modulated signal is rotated by an amount related to the determined phase rotation. The phase rotation compensation can be performed at various locations along the transmit signal path by rotating either the data, the PN sequences used to spectrally spread the data, or the carrier signals used to modulate the data.

REFERENCES:
patent: 4901307 (1990-02-01), Gilhousen et al.
patent: 5103459 (1992-04-01), Gilhousen et al.
patent: 5287555 (1994-02-01), Wilson et al.
patent: 5561395 (1996-10-01), Melton et al.
patent: 5732334 (1998-03-01), Miyake
patent: 5770971 (1998-06-01), McNicol
patent: 5933767 (1999-08-01), Leizerovich et al.
patent: 6097714 (2000-08-01), Nagatani et al.
patent: 6535562 (2003-03-01), Mohseni et al.
patent: 6587513 (2003-07-01), Ichihara
patent: 0738050 (1996-10-01), None
patent: 2265270 (1993-09-01), None
patent: 2300545 (1996-11-01), None

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