Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2008-01-01
2008-01-01
Vo, Don N. (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S145000
Reexamination Certificate
active
10366385
ABSTRACT:
A mobile communication system1according to the present invention comprises base station30and mobile station10. The base station30sends a pilot symbol sequence known to the mobile station10, to the mobile station10, using a plurality of carriers for downward channels, and performs communication with the mobile station10while multiplying the channels by frequencywise same scrambling codes every symbol period. The mobile station10is provided with a peak detector17for calculating cross correlation allowing for a phase difference of the scrambling codes, between frequencywise pilot symbol sequences received from the base station30, thereby detecting a radio frame boundary.
REFERENCES:
patent: 5151925 (1992-09-01), Gelin et al.
patent: 5627863 (1997-05-01), Aslanis et al.
patent: 5930366 (1999-07-01), Jamal et al.
patent: 6208624 (2001-03-01), Tanno et al.
patent: 6493376 (2002-12-01), Harms et al.
patent: 6853631 (2005-02-01), Nakamura et al.
patent: 6961565 (2005-11-01), Tanno et al.
patent: 2001/0021236 (2001-09-01), Song
patent: 2002/0191682 (2002-12-01), Moon
patent: 0 895 388 (1999-02-01), None
patent: 1 059 818 (2000-12-01), None
patent: 1 172 983 (2002-01-01), None
patent: 1 175 056 (2002-01-01), None
patent: 2001-0031050 (2001-04-01), None
patent: WO 99/19992 (1999-04-01), None
patent: WO 99/29078 (1999-06-01), None
patent: WO 01/35591 (2001-05-01), None
Motohiro Tanno, et al., “Three-Step Fast Cell Search Algorithm Utilizing Common Pilot Channel for OFCDM Broadband Packet Wireless Access”, VTC 2002-Fall. 2002 IEEE 56th, Vehicular Technology Conference Proceedings, XP-010608694, vol. 1 of 4. conf. 56 Sep. 24, 2002, pp. 1575-1579.
Frederick J. Block, et al., “Parallel Acquisition of Multicarrier Direct-Sequence Spread-Spectrum Signals”, Vehicular Technology Conference, 1999 IEEE, XP-010341918, vol. 1, May 16, 1999, pp. 97-102.
Sang Hyo Kim, et al., “A Frame Synchronization Scheme for Uplink MC-CDMA”, Vehicular Technology Conference, VTC 1999-Fall, IEEE VTS 50th, XP-010352999, Sep. 19, 1999, pp. 2188-2192.
Seunghyeon Nahm, et al., “A Synchronization Scheme for Multi-Carrier CDMA Systems”, Communications, 1998, ICC 98, Conference Record, 1998 IEEE International Conference, XP-010284579, vol. 3, Jun. 7, 1998, pp. 1330-1334.
T. Keller, et al., “Orthogonal Frequency Division Multiplex Synchronisation Techniques for Wireless Local Area Networks”, IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, XP-002063294, vol. 3, Oct. 15, 1996, pp. 963-967.
K. Fazel, et al., “On the Performance of Convolutionally-Coded CDMA/OFDM for Mobile Communications System”, The fourth International Symposium on personal, indoor and mobile radio communications, Sep. 8-11, 1993, pp. 468-472.
http://www.arib.or.jp/IMT-2000/ARIB-STD/ITU/25213-311.pdf., pp. 1-27, “3G TS 25.213 V3.1.1 Spreading and Modulation (FDD)”, 1999.
Atarashi Hiroyuki
Sawahashi Mamoru
Tanno Motohiro
NTT DoCoMo Inc.
Vo Don N.
LandOfFree
Mobile communication system, channel synchronization... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Mobile communication system, channel synchronization..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mobile communication system, channel synchronization... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3951632