Pulse or digital communications – Transmitters – Antinoise or distortion
Reexamination Certificate
2008-01-15
2008-01-15
Ghayour, Mohammed (Department: 2611)
Pulse or digital communications
Transmitters
Antinoise or distortion
C375S296000, C455S126000, C455S114200, C455S114300
Reexamination Certificate
active
10631655
ABSTRACT:
Disclosed is radio equipment for transmission and reception of Frequency Division Duplex mode signals and transmission signal characteristic compensation utilizing small-scaled circuit construction. A receiver converts Radio Frequency band signals from an antenna sharer to an Intermediate Frequency (IF) via a mixer and into digital signals utilizing an Analog-to Digital Converter. Reception signals and image signals of transmission signals, both having an IF A are contained in the converted signals, are converted into reception signals having an IF B and image signals having an IF C, respectively, which both have positive and negative carrier frequencies symmetrical to a zero frequency direct current component and are represented as a complex number. A transmitter converts the IF C into a baseband of image signals, and compensates signal characteristics relative to complex baseband signals of quantized transmission signals at a characteristic compensator using converted signals as reference signals.
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Ghayour Mohammed
The Farrell Law Firm PC
Torres Juan Alberto
LandOfFree
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