Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent
1996-10-29
1999-09-07
Dolinar, Andrew M.
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
455442, 370332, 370335, 375207, H04Q 732, H04J 1304, H04L 2732
Patent
active
059501316
ABSTRACT:
Performance of a radiotelephone (104) in a CDMA communication system (100) is enhanced using a receiver searcher (114) that includes a matched filter (128) to capture the pilot energies of all receivable transmissions from a base station (102) and other nearby base stations. A detected PN sequence is compared with a predetermined PN sequence stored at the radiotelephone (104). The predetermined PN sequence includes, for example, the last 512 chips in the short PN sequence used for spreading the in-phase channel and the quadrature-phase channel.
REFERENCES:
patent: 5109390 (1992-04-01), Gilhousen et al.
patent: 5179571 (1993-01-01), Schilling
patent: 5267261 (1993-11-01), Blakeney, II et al.
patent: 5311544 (1994-05-01), Park et al.
patent: 5410568 (1995-04-01), Schilling
patent: 5469469 (1995-11-01), Haines
patent: 5490165 (1996-02-01), Blakeney, II et al.
patent: 5544156 (1996-08-01), Teder et al.
patent: 5703873 (1997-12-01), Ojanpera et al.
patent: 5715276 (1998-02-01), Tran et al.
R. C. Dixon, "Integrate-and-Dump Filters", Spread Spectrum Systems, 2nd Edition, John Wiley & Sons, 1984, pp. 203-204.
R. C. Dixon, "Matched-Filter Synchronizers", Spread Spectrum Systems, 2nd Edition, John Wiley & Sons, 1984, pp. 229-234.
K. Higuchi et al., "Two-Stage Rapid Cell Search Scheme in DS-CDMA Asynchronous Cellular System using Long Code", Technical Report of IEICE, NTT Mobile Communications Network, Aug. 1996, pp. 51-56.
R. L. Peterson et al., Section 5-1, Introduction to Spread-Spectrum Communications, Prentice-Hall, Inc., 1995, pp. 221-223.
D. L. Schilling, Unpublished Paper, "A Matched Filter-Based Wideband CDMA Implementation", Jul. 1996, pp. 1-16.
G. L. Turin. "An Introduction to Digital Matched Filters", Proceedings of the IEEE, Jul. 1976, pp. 1092-1112.
G. L. Turin, "An Introduction of Matched Filters", IEEE Transactions on Information Theory, Jun. 1960, pp. 310-329.
R. B. Ward et al., "Acquisition of Pseudonoise Signals by Recursion-Aided Sequential Estimation", IEEE Transactions on Communications, vol. Com-25, No. 8, Aug. 1977, pp. 784-794.
R. B. Ward, "Acquisition of Pseudonoise Signals by Sequential Estimation", IEEE Transactions on Communication Technology, Dec. 1965, pp. 475-483.
TIA/EIA Interim Standard, Mobile Station-Base Station Compatibility Standard for Dual-Mode Wideband Spread Spectrum Cellular System, TIA/EIA/IS-95, Telecommunications Industry Association, Jul. 1993, pp. 7-2 & 7-18.
Dolinar Andrew M.
Mancini Brian M.
Motorola Inc.
Rauch John G.
LandOfFree
Method and apparatus for fast pilot channel acquisition using a does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for fast pilot channel acquisition using a , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for fast pilot channel acquisition using a will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1815036