Pulse or digital communications – Receivers – Particular pulse demodulator or detector
Reexamination Certificate
2006-01-17
2006-01-17
Chin, Stephen (Department: 2634)
Pulse or digital communications
Receivers
Particular pulse demodulator or detector
C379S406080
Reexamination Certificate
active
06987818
ABSTRACT:
Method of detecting a plurality of symbols transmitted by or to a plurality of users from a received signal, each symbol of a user belonging to a modulation constellation, the detection method using a lattice of points generated by the said modulation constellations, the said plurality of symbols of the different users being represented by a point amongst a subset of points in the said lattice, the said constellation and the received signal being represented by a point characteristic of this signal, referred to as the received point, translated from a point in the said constellation by a noise vector, the method including a step of orthogonal projection of the received point onto an affine subspace, referred to as a projection subspace, parallel to or merged with an affine subspace delimiting the constellation, and a step of seeking the closest neighbor to the point thus projected amongst the points in the constellation.
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Chin Stephen
Mitsubishi Denki & Kabushiki Kaisha
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Pathak Sudhanshu C.
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