Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2006-11-08
2010-06-29
Corrielus, Jean B (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S141000
Reexamination Certificate
active
07746919
ABSTRACT:
A modified adaptive minimum mean square error (MMSE) receiver detects a spread spectrum signal, minimizing interference among multiple users. The receiver receives multiple pilot bits and corresponding data bits. A channel is estimated using at least one of the received pilot bits and, simultaneously, the data bits are detected based on the pilot bit and an inverse of a gain of the receiver. The spectrum signal may be spread in accordance with a wideband code division multiple access (W-CDMA) format, in which the pilot bits are modified to include a predetermined bit sequence of alternating ones and negative ones.
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AT&T Intellectual Property I L.P.
Corrielus Jean B
Greenblum & Bernstein P.L.C.
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