Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2007-01-09
2007-01-09
Tse, Young T. (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
Reexamination Certificate
active
10161154
ABSTRACT:
A ZF joint detection apparatus for a downlink receiver, the apparatus comprising: a channel estimator for estimating a channel impulse response of a multipath fading channel of a received signal; a channel equalizer for estimating a transmission signal by performing channel compensation and removing multipath interference by a deconvolution technique based on the estimated channel impulse response; and a user detector for detecting a symbol-level data sequence transmitted by a specific user by despreading the transmission signal estimated by the channel equalizer with a spreading code for the specific user and a scrambling code.
REFERENCES:
patent: 5706402 (1998-01-01), Bell
patent: 6175588 (2001-01-01), Visotsky et al.
patent: 6339612 (2002-01-01), Stewart et al.
patent: 6775260 (2004-08-01), Dabak et al.
Chen Jeng-Hong
Huh Hoon
Kang Hee-Won
Lai Dennis
Peng Wei-Chung
The Farrell Law Firm
The Titan Corporation
Tse Young T.
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