Multiplex communications – Communication techniques for information carried in plural... – Combining or distributing information via time channels
Reexamination Certificate
2008-05-06
2008-05-06
Pham, Chi (Department: 2616)
Multiplex communications
Communication techniques for information carried in plural...
Combining or distributing information via time channels
C375S142000
Reexamination Certificate
active
07369577
ABSTRACT:
Step 2 demodulation is conventionally performed using a secondary synchronization channel that correlates a received signal at a known time slot location against each of a plurality of sequences associated with the secondary synchronization code. The disclosed implementation proposes the use of a different synchronization channel to complete the step 2 process. More specifically, a complete synchronization channel correlator is used for the demodulation where the received signal at the known time slot location is correlated against a combination of the primary synchronization code and each of the plurality of secondary synchronization codes. This combined correlation produces enhanced step 2 performance in terms of acquisition time or signal-to-noise ratio.
REFERENCES:
patent: 5930366 (1999-07-01), Jamal et al.
patent: 6801567 (2004-10-01), Schmidl et al.
patent: 6831956 (2004-12-01), Schmidl et al.
patent: 6888880 (2005-05-01), Lee et al.
patent: 6996162 (2006-02-01), Hosur et al.
patent: 7023831 (2006-04-01), Okuyama
patent: 2002/0150188 (2002-10-01), Rudolf
patent: 2003/0063656 (2003-04-01), Rao et al.
patent: 2003/0202564 (2003-10-01), Ho et al.
patent: 2003/0223384 (2003-12-01), Sengupta et al.
patent: 2004/0085920 (2004-05-01), Sezgin et al.
European Search Report, 03253066.9, Jul. 31, 2003.
Gyongsu, et al., “A searcher design for the Synchronization Channel of WCDMA”,IEEE VTC 2000, vol. 2, pp. 1364-1370, dated Sep. 24, 2000, XP010524718.
Wang, et al., “Cell Search in W-CDMA”,IEEE Inc.,vol. 18, No. 8, pp. 1470-1482, Aug. 2000, XP002224578.
“Universal Mobile Telecommunications System (UMTS); Spreading and Modulation (FDD)(3G TS 25.213 version 3.2.0 Release 1999)”,ETSI TS 125 213 v3.2.1(2000-3) pp. 1-27, dated Mar. 2002, XP002203809.
Belveze Fabrice
Darbel Nicolas
Faux Grégory
Jorgenson Lisa K.
Pham Chi
STMicroelectronics Inc.
Szuwalski Andre M.
Tran Phuc
LandOfFree
Code group acquisition procedure for a UMTS-FDD 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 Code group acquisition procedure for a UMTS-FDD receiver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Code group acquisition procedure for a UMTS-FDD receiver will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2795159