Pulse or digital communications – Receivers – Interference or noise reduction
Reexamination Certificate
2006-09-05
2006-09-05
Ghayour, Mohammed (Department: 2611)
Pulse or digital communications
Receivers
Interference or noise reduction
C375S316000, C455S296000
Reexamination Certificate
active
07103117
ABSTRACT:
Multipath interference in a received wireless signal is cancelled by generating an estimated duplicate of the interference and subtracting it from the received signal. The interference duplication is performed in a truncated manner, based on a determination of which multipath signals are present, so as to reduce the complexity and processing requirement of the interference duplication. In particular, the present invention proposed that the truncation is based on a determination of which multipath signals are present, and the properties of those signals. In a first case, the truncation is that only interference between selected pairs of paths are cancelled in MPIC. In a second case, for given pairs of paths cancellation is only performed for a subset of the chips in which the corresponding two paths can cause interference.
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Katsuragawa Hiroshi
Pan Ju Yan
Xu Chang Qing
Ghayour Mohammed
Malek Leila
Oki Techno Centre (Singapore) Pte Ltd
Sartori Michael A.
VENABLE LLP
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