Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2011-08-02
2011-08-02
Bocure, Tesfaldet (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S346000
Reexamination Certificate
active
07991041
ABSTRACT:
Techniques for recovering a desired transmission in the presence of interfering transmissions are described. For iterative detection and cancellation, multiple groups of code channels are formed for a plurality of code channels for at least one sector. Processing is performed for the multiple groups of code channels in multiple iterations. For each iteration, data detection and signal cancellation are performed for the multiple groups of code channels in multiple stages, e.g., in a sequential order starting with the strongest group to the weakest group. Each stage of each iteration may perform data detection, signal reconstruction, and signal cancellation. Each stage of each iteration may also perform equalization, data detection, signal reconstruction, and signal cancellation.
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Abrishamkar Farrokh
Kang Inyup
Shim Byonghyo
Bocure Tesfaldet
Mobarhan Ramin
Qualcomm Incorporated
Seo Howard H.
Williams Lawrence B
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