Transmitting arrangement for mobile radio
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United States of America Patent
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Aug 5, 2008
Grant Date -
Nov 18, 2004
app pub date -
Mar 10, 2004
filing date -
Sep 12, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A transmitting arrangement, in particular for mobile radio, has a quadrature modulator with an upstream, digital signal processing unit. In order to suppress side bands and the carrier frequency, which may occur as a result of excessive matching tolerances between the components which are used, a feedback path couples the modulator output to the digital signal processing unit. The feedback path provides the envelope of the transmission signal at the input of the digital signal processing unit in order to provide preemphasis in the digital signal processing. The envelope can be provided by an undersampling A/D converter in the feedback path.
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