Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2006-10-17
2006-10-17
Kumar, Pankaj (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
Reexamination Certificate
active
07123647
ABSTRACT:
An X-Y, base-band receiver for code-division multiple accessing (“CDMA”) is used at both base station and mobile station. The signal transmitted from a transmitter carries serial information symbols. Signals from all transmitters pass through a multi-path fading channel before they are received by the X-Y receiver. There is more than one instance of each symbol. The X-Y receiver searches for all instances of each symbol and combines all instances.
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patent: 5960028 (1999-09-01), Okamoto et al.
patent: 6154487 (2000-11-01), Murai et al.
Clingan, Jr. James L.
Freescale Semiconductor Inc.
Kumar Pankaj
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