Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2006-03-07
2006-03-07
Patel, Jay K. (Department: 2637)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S150000
Reexamination Certificate
active
07010022
ABSTRACT:
The spread spectrum receiver employs circuits based on direct conversion techniques. These circuits enable realization of spread spectrum receivers of greatly reduced complexity and of much higher chip rates that can be implemented with the standard approach of a fully digital receiver. With these circuits, the digital processing is performed at the data symbol rate and not at a multiple of the chip rate that is customary in state-of-the art spread spectrum and CDMA receiver design.
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A 2-GHz wide-band direct conversion receiver for WCDMA applications□□Parssinen, A. et al; Solid-State CIrcuits, IEEE Journal of□□vol. 34, Issue 12, Dec. 1999 Pages: 1893-1903.
Kohno Ryuji
Sousa Elvino S.
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Meek Jacob
Patel Jay K.
Sony Corporation
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