Pulse or digital communications – Receivers – Interference or noise reduction
Reexamination Certificate
2006-01-10
2006-01-10
Liu, Shuwang (Department: 2634)
Pulse or digital communications
Receivers
Interference or noise reduction
C375S144000, C375S147000, C375S346000, C455S132000
Reexamination Certificate
active
06985545
ABSTRACT:
An RF radio receiver utilizing wideband RF technology, a wideband digital IF (channelizer) tuner, a common digitizing rate, and multi-user detection (MUD) processes a superposed RF signal to allow simultaneous reception of two or more RF signals sharing overlapping frequency spectrum (RF bandwidth). The RF radio receiver is particularly effective for two or more RF signals of differing RF channel bandwidth and can also receive signals which accord to different air interface standards. The use of a common digitizing rate provides for oversampling of at least one of the RF signals for more accurate decoding and allows for a synchronized signal (i.e. at a common rate) to be used in decoding, and in particular multi-user decoding of other RF signals.
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Steer David G.
Teo Koon H.
Wu Shiquan
Liu Shuwang
Nortel Networks Limited
Wang T
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