Pulse or digital communications – Transmitters – Quadrature amplitude modulation
Reexamination Certificate
2006-12-19
2006-12-19
Ghayour, Mohammed (Department: 2611)
Pulse or digital communications
Transmitters
Quadrature amplitude modulation
C332S103000
Reexamination Certificate
active
07151805
ABSTRACT:
A system and method for generating an I/Q signal for an I/Q modulator (10). The signal is composed of two or more data streams, which have been edited according to identical or different modulation methods. A known modulation encoder is used to generate corresponding digital I/Q values from a first inputted digital data stream. The I/Q values then undergo a digital-analogue conversion (8) that generates the corresponding analogue I/Q signals. The system includes an additional modulation generator that calculates digital I/Q values, or generates I/Q values from an additional inputted digital data stream. The digital I/Q values of the modulation encoder and the digital I/Q values of the modulation generator (10) are then added together, using digital adders (A3) located upstream of the digital-analogue converter (8).
REFERENCES:
patent: 5425050 (1995-06-01), Schreiber et al.
patent: 6269113 (2001-07-01), Park
patent: 199 57 093 (1999-11-01), None
patent: 0 534 255 (1992-09-01), None
patent: 0 588 542 (1993-09-01), None
patent: 0 589 594 (1993-09-01), None
patent: 0588542 (1993-09-01), None
patent: 0 680 169 (1995-04-01), None
Ghayour Mohammed
Lewis, Rice & Fingersh L.C.
Malek Leila
Rohde & Schwarz GmbH & Co. KG
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