Adaptive cap receiver and method for controlling a cap receiver
First Claim
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1. A method for controlling a CAP receiver, which comprises:
- converting an input signal with a clock-controlled A/D converter;
providing a digital level-control circuit downstream of the A/D converter;
providing an adaptive controlled reception filtering system with two parallel filters downstream of the level-control circuit;
providing a decision maker downstream of the adaptive reception filtering system for outputting reconstructed signal coordinates;
decoupling the digital level-control circuit from the adaptive reception filtering system by activating one of an adjustment of the digital level-control circuit and a coefficient adjustment of the adaptive reception filtering system; and
decoupling clock control of the A/D converter from the adaptive reception filtering system.
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Abstract
An adaptive CAP filter includes a clock-controlled A/D converter for converting an input signal, a digital level-control circuit, an adaptive controlled reception filtering system with two parallel filters and a downstream decision maker for outputting reconstructed signal coordinates. The digital level-control circuit and the adaptive reception filtering system are decoupled by virtue of the fact that either an adjustment of the digital level-control circuit or a coefficient adjustment of the adaptive reception filtering system is active. A method for controlling a cap receiver is also provided.
107 Citations
13 Claims
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1. A method for controlling a CAP receiver, which comprises:
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converting an input signal with a clock-controlled A/D converter;
providing a digital level-control circuit downstream of the A/D converter;
providing an adaptive controlled reception filtering system with two parallel filters downstream of the level-control circuit;
providing a decision maker downstream of the adaptive reception filtering system for outputting reconstructed signal coordinates;
decoupling the digital level-control circuit from the adaptive reception filtering system by activating one of an adjustment of the digital level-control circuit and a coefficient adjustment of the adaptive reception filtering system; and
decoupling clock control of the A/D converter from the adaptive reception filtering system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An adaptive CAP receiver, comprising:
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a clock-controlled A/D converter with a sampling clock, for converting an input signal;
a digital level-control circuit with a digital level, connected downstream of said A/D converter;
an adaptive controlled reception filtering system with two parallel filters connected downstream of said digital level-control circuit;
a decision maker connected downstream of said adaptive controlled reception filtering system for outputting reconstructed signal coordinates; and
said digital level-control circuit and said adaptive reception filtering system being decoupled by activating one of an adjustment of said digital level-control circuit and a coefficient adjustment of said adaptive reception filtering system, and clock control of said A/D converter and said adaptive reception filtering system being decoupled, for controlling said sampling clock, said digital level and said adaptive reception filtering system.
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Specification