Apparatus and method for separating carrier of multicarrier...

Pulse or digital communications – Receivers – Interference or noise reduction

Reexamination Certificate

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Reexamination Certificate

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07127012

ABSTRACT:
In the apparatus and method for separating carrier of multicarrier wireless communication receiver system, each carrier separation is performed after a quantization in a wireless communication receiver system such as a received multicarrier CDMA (Code Division Multiple Access) etc., to thereby reduce the whole number of quantizers and separate multicarrier from a received signal. For that, the apparatus for separating the carrier of the multicarrier wireless communication receiver system includes an internal oscillating unit for generating internal multicarrier; a plurality of frequency transition units for respectively down-converting the multicarrier generated by the internal oscillating unit and moving it to frequency of “0” as a frequency center; and a plurality of filtering units for individually filtering the respective carrier moved by the plurality of frequency transition units to the frequency center as the frequency of “0”, through a low frequency pass band and for providing it as an input of a rake receiver.

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patent: 6690735 (2004-02-01), Maddiotto et al.
patent: 6876645 (2005-04-01), Guey et al.
patent: 6925067 (2005-08-01), Jou
patent: 96-12805 (1996-09-01), None
patent: 1997-055573 (1997-07-01), None
patent: 298062707 (2000-07-01), None

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