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US 2004/0017843 A1Published application
Receiver processing systems
AssigneeKabushiki Kaisha Toshiba
InventorsMichael Philip Fitton, Khurram Ali Rizvi, Yuk Ching Chow
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AssigneeKabushiki Kaisha Toshiba
InventorsMichael Philip Fitton, Khurram Ali Rizvi, Yuk Ching Chow
Estimating the term…
Multicode spread spectrum receiver architectures and methods are described for reducing interference, particularly the interference observed at a user-end terminal in a W-CDMA 3G mobile communications system. Interpath interference which arises due to non-zero cross and auto correlation of more than one spreading code is suppressed by estimating a transmitted signal stream, or a plurality of such signal streams in the case of a plurality of multipath components, respreading this estimated signal and subtracting non-orthogonal interference contributions from a received signal. The techniques provide an improved bit error rate or equivalently, enhanced capacity for a digital mobile communications network.
A multicode receiver for receiving data carried by a plurality of spread spectrum signals having a corresponding plurality of spreading codes, the spreading codes being substantially mutually orthogonal, the receiver having intercede interference suppression, the receiver comprising:
A method of suppressing intercede interference in a multicode receiver for receiving data carried by a plurality of spread spectrum signals having a corresponding plurality of spreading codes, the spreading codes being substantially mutually orthogonal, the method comprising:
Dependencies are inferred from the claim text.