Slicing algorithm for multi-level modulation equalizing schemes
First Claim
1. A method for slicing a received signal in a slicer, comprising the steps of:
- receiving a signal to be sliced in an input of said slicer;
identifying, by said slicer, an ideal signal point in a constellation of ideal signal points in a planar signal space wherein the constellation of ideal signal points includes a plurality of decision regions, each decision region having a plurality of ideal signal points distributed throughout, the identified ideal signal point being located closer to the received signal than other ideal signal points in the constellation of ideal signal points;
determining, in circuitry coupled to the slicer input, an angle of the identified ideal signal point with respect to an origin;
determining, in said circuitry, an average power of all of the plurality of ideal signal points in the constellation of ideal signal points;
generating, in said circuitry, a signal representing a decision point having a predetermined magnitude equal to a magnitude of the average power of all of the plurality of ideal signal points in the constellation of ideal signal points and an angle equal to the determined angle; and
assigning the decision point associated with the determined decision region to the received signal;
wherein said decision regions are defined as respective regions between adjacent boundary angles, said boundary angles adjusted to be bisectors between adjacent angles representing respective points in the constellation of ideal signal points.
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Abstract
A method for slicing a received signal includes the steps of receiving a signal representing one of a constellation of ideal data points in a planar signal space, the received signal being at a point in the signal space, and assigning to the received signal a decision point having a predetermined magnitude and an angle representing a corresponding ideal signal point A slicer includes a source for receiving a signal representing one of a constellation of ideal data points in a planar signal space, the received signal being at a point in the signal space, and circuitry, coupled to the signal source, for generating a signal representing a decision point having a predetermined magnitude and an angle representing an ideal signal point corresponding to the signal point .
30 Citations
20 Claims
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1. A method for slicing a received signal in a slicer, comprising the steps of:
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receiving a signal to be sliced in an input of said slicer; identifying, by said slicer, an ideal signal point in a constellation of ideal signal points in a planar signal space wherein the constellation of ideal signal points includes a plurality of decision regions, each decision region having a plurality of ideal signal points distributed throughout, the identified ideal signal point being located closer to the received signal than other ideal signal points in the constellation of ideal signal points; determining, in circuitry coupled to the slicer input, an angle of the identified ideal signal point with respect to an origin; determining, in said circuitry, an average power of all of the plurality of ideal signal points in the constellation of ideal signal points; generating, in said circuitry, a signal representing a decision point having a predetermined magnitude equal to a magnitude of the average power of all of the plurality of ideal signal points in the constellation of ideal signal points and an angle equal to the determined angle; and assigning the decision point associated with the determined decision region to the received signal; wherein said decision regions are defined as respective regions between adjacent boundary angles, said boundary angles adjusted to be bisectors between adjacent angles representing respective points in the constellation of ideal signal points. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A slicer, comprising:
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a source for receiving a signal to be sliced;
where an ideal signal point in a constellation of ideal signal points in a planar signal space is identified, the received signal being at a point in the signal space, wherein the constellation of ideal signal points include a plurality of decision regions, each decision region having a plurality of ideal signal points distributed throughout, the identified ideal signal point being located closer to the received signal than other ideal signal points in the constellation of ideal signal points; andcircuitry, coupled to the signal source for determining an angle of the identified ideal signal point with respect to an origin, determining an average power of all the plurality of ideal signal points in the constellation of ideal signal points, generating boundary representative signals representing angles between respective angles of the constellation of ideal signal points, and generating a signal representing a decision point having a predetermined magnitude equal to a magnitude of the average power of all of the plurality of ideal signal points in the constellation of ideal signal points and an angle equal to the determined angle. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification