Pulse or digital communications – Receivers – Interference or noise reduction
Reexamination Certificate
2006-07-24
2009-10-06
Lugo, David B (Department: 2611)
Pulse or digital communications
Receivers
Interference or noise reduction
C375S355000
Reexamination Certificate
active
07599454
ABSTRACT:
Methods and apparatus taught herein provide for symbol alignment between diversity signals in a communication receiver. For example, in one embodiment, a method of symbol aligning diversity signals in a communication receiver comprises generating diversity sample sets for a received signal and hypothesizing two or more relative symbol alignments for the diversity sample sets. The method further includes jointly determining a preferred relative symbol alignment and a preferred synchronization position for the diversity sample sets by evaluating a function that is dependent on relative symbol alignment and synchronization position according to the hypothesized relative symbol alignments and a number of candidate synchronization positions. In one embodiment, a burst-type communication receiver uses Single-Antenna-Interference-Cancellation (SAIC) processing, and over-samples the received signal to obtain the diversity sample sets as sub-channels of the received signal. A diversity processor in the receiver jointly determines the best relative symbol alignment and synchronization position.
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Coats & Bennett P.L.L.C.
Lugo David B
Telefonaktiebolaget LM Ericsson (publ)
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