Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2006-10-17
2006-10-17
Ghebretinsae, Temesghen (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S147000, C375S145000, C370S342000, C370S335000
Reexamination Certificate
active
07123646
ABSTRACT:
A synchronous acquisition device for a small-circuit-scale CDMA receiver is provided. The synchronous acquisition device for a CDMA receiver, which receives as a receiver signal a spectrum-spread signal generated by spectrum-spreading, using a spreading code, transmission data including one of first to mth pieces (m: an integer 2 or more) of fixed data, comprises, for each of a plurality of paths into which the receiver signal is branched, a multiplier (21) for multiplying the receiver signal by the spreading code, an integrator (12) for one-symbol-time integrating an output signal from the multiplier (21), fixed data sequential output units (251to25m, 24) having the first to mth pieces of fixed data and sequentially outputting the first to mth pieces of fixed data, and a second multiplier (23) for multiplying an output signal from the integrator (12) by the first to mth pieces of fixed data sequentially outputted from the fixed data sequential output units.
REFERENCES:
patent: 4404645 (1983-09-01), Elings et al.
patent: 5432814 (1995-07-01), Hasegawa
patent: 5528624 (1996-06-01), Kaku et al.
patent: 5638362 (1997-06-01), Dohi et al.
patent: 5790588 (1998-08-01), Fukawa et al.
patent: 5835488 (1998-11-01), Sugita
patent: 5970084 (1999-10-01), Honda
patent: 5978412 (1999-11-01), Takai
patent: 6064688 (2000-05-01), Yanagi
patent: 6067314 (2000-05-01), Azuma
patent: 6069915 (2000-05-01), Hulbert
patent: 6097712 (2000-08-01), Secord et al.
patent: 6128329 (2000-10-01), Takakusaki
patent: 6154487 (2000-11-01), Murai et al.
patent: 6324210 (2001-11-01), Yang et al.
patent: 6353627 (2002-03-01), Schilling
patent: 6421372 (2002-07-01), Bierly et al.
patent: 6470000 (2002-10-01), Burns et al.
patent: 6611512 (2003-08-01), Burns
patent: 6625199 (2003-09-01), McDonough
patent: 6628699 (2003-09-01), Ramberg et al.
patent: 6850507 (2005-02-01), Ok
patent: 0 749 223 (1996-12-01), None
patent: 10-173630 (1998-06-01), None
A novel architecture design for multicode CDMA rake receiver□□Sangyun Hwang; et al; ASICs, 1999. AP-ASIC '99. The First IEEE Asia Pacific Conference on□□Aug. 23-25,1999 pp. 421-423.
Abstract of Japanese Application No. 08180719.
Copy of European Search Report dated Jan. 8, 2003.
Dickstein , Shapiro, LLP.
Ghebretinsae Temesghen
NEC Corporation
LandOfFree
Synchronous acquisition device for CDMA receiver does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Synchronous acquisition device for CDMA receiver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Synchronous acquisition device for CDMA receiver will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3649232