Pulse or digital communications – Transmitters
Reexamination Certificate
2010-07-27
2011-11-08
Torres, Juan A (Department: 2611)
Pulse or digital communications
Transmitters
Reexamination Certificate
active
08054910
ABSTRACT:
Aspects of the invention are directed to service and channel discovery in a digital broadcast network. A pilot synchronization symbol, which has known characteristics, is included as a first symbol of digital broadcast frames. The pilot symbol, which can be decoded without having to resort to trial and error methods, contains parameters for the rest of the signal. In another aspect of the invention, at least two pilot symbols may be defined and used at the beginning of each frame. The at least two pilot symbols P1 and P2 may enable fast channel search and service discovery within the frame. Signaling may be realized as a combination of L1 and L2 signaling.
REFERENCES:
patent: 5596582 (1997-01-01), Sato et al.
patent: 5818813 (1998-10-01), Saito et al.
patent: 5867478 (1999-02-01), Baum et al.
patent: 6035003 (2000-03-01), Park et al.
patent: 6115354 (2000-09-01), Weck
patent: 6414936 (2002-07-01), Cho et al.
patent: 6487252 (2002-11-01), Kleider et al.
patent: 7027464 (2006-04-01), Nakahara et al.
patent: 7251291 (2007-07-01), Dubuc et al.
patent: 7366250 (2008-04-01), Mujtaba et al.
patent: 7382719 (2008-06-01), Gummadi et al.
patent: 7415074 (2008-08-01), Seto et al.
patent: 7529308 (2009-05-01), Kodama et al.
patent: 7532563 (2009-05-01), Shirali et al.
patent: 2002/0160737 (2002-10-01), Crawford
patent: 2004/0059988 (2004-03-01), Murakami et al.
patent: 2004/0141457 (2004-07-01), Seo et al.
patent: 2004/0181799 (2004-09-01), Lu et al.
patent: 2005/0163081 (2005-07-01), Aoki et al.
patent: 2005/0163262 (2005-07-01), Gupta
patent: 2005/0163265 (2005-07-01), Gupta
patent: 2005/0276347 (2005-12-01), Mujtaba et al.
patent: 2005/0288062 (2005-12-01), Hammerschmidt et al.
patent: 2006/0002487 (2006-01-01), Kriedte et al.
patent: 2006/0062316 (2006-03-01), Kim
patent: 2006/0244865 (2006-11-01), Simon
patent: 2007/0116166 (2007-05-01), Parts et al.
patent: 2007/0217547 (2007-09-01), Tani
patent: 2008/0069263 (2008-03-01), Murakami et al.
patent: 0689313 (1995-12-01), None
patent: 076701 (1997-03-01), None
patent: 1367789 (2003-12-01), None
patent: 1750374 (2007-02-01), None
Palin, “Symbol Synchronization in OFDM System for Time Selective Channel Conditions,” The 6th IEEE International Conference on Electronics, Circuits and Systems, 1999, Proceedings of ICECS '99, vol. 3 Publication Year: 1999, pp. 1581-1584.
Palin, “Symbol Synchronization in DVB-T System in Mobile Environment,” International Conference on Consumer Electronics, 1999, ICCE, Digital Object Publication Year: 1999, pp. 180-181.
Parviainen, “Novel Radio Channel Models for Evaluation of DVB-H Broadcast Systems,” 2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications, Publication Year: 2006, pp. 1-5.
Yang, “A Survey of Handover Algorithms in DVB-H,” Communications Surveys & Tutorials, IEEE vol. 8, Issue 4, Publication Year: 2006, pp. 16-29.
Vare, “Soft Handover in Terrestrial Broadcast Networks,” 2004 IEEE International Conference on Mobile Data Management, 2004, Proceedings, Publication Year: 2004, pp. 236-242.
Henriksson, “Coach Potato,” Communications Engineer. vol. 2, Issue 4, Publication Year: 2004, pp. 28-32.
Heon, Huh et al., “Efficient Timing and Frequency Offset Estimation in OFDM Systems,” Signals, Systems and Computers, 2005, Conference Record of the 39th Asilomar Conference, Pacific Grove, California, Oct. 28.-Nov. 1, IEEE, Piscataway, NJ, USA, IEEE, Oct. 28, 2005, pp. 1480-1484.
International Search Report, Application No. PCT/IB2008/000514, dated Aug. 11, 2009.
Park, “Performance of pilot-assisted channel estimation for OFDM system under time-varying multi-path Rayleigh fading with frequency offset compensation”, Vehicular Technology Conference Proceedings, 2000, VTC 2000-Spring Tokyo, 2000 IEEE 51st, vol. 2, May 15-18, 2000 pp. 1245-1249 vol. 2.
Faria, “DVB-H: Digital Broadcast Services to Handheld Devices”, Proceedings of the IEEE vol. 94, Issue 1, Jan. 2006 pp. 194-209.
ETSI, Digital video broadcasting (DVB); transmission system for handheld terminals (DVB-H), ETSI EN 302 304 V1.1.1 (Nov. 2004), European Telecommunications Standards Institute (www.etsi.org).
ETSI, Digital video broadcasting (DVB); DVB specification for data broadcasting, ETSI EN 301 192 V1.4.1 (Nov. 2004), European Telecommunications Standards Institute (www.etsi.org).
ETSI, Digital video broadcasting (DVB); Specification for service information (SI) in DVB systems, ETSI EN 300 468 V1.6.1 (Nov. 2004), European Telecommunications Standards Institute (www.etsi.org).
ETSI, Digital video broadcasting (DVB); DVB mega-frame for single frequency network (SFN) synchronization, ETSI TS 101 191 V1.4.1 (Jun. 2004), European Telecommunications Standards Institute (www.etsi.org).
ETSI, Digital video broadcasting (DVB); transmission to handheld terminals (DVB-H); validation task force report VTF, ETSI TR 102401 V1.1.1 (Apr. 2005), European Telecommunications Standards Institute (www.etsi.org).
ETSI, Digital video broadcasting (DVB); DVB-H implementation guidelines, ETSI TR 102 377 V1.1.1 (Feb. 2005), European Telecommunications Standards Institute (www.etsi.org).
Moose, “A technique for orthogonal frequency division multiplexing frequency offset correction,” IEEE Trans. Commun., vol. 42, pp. 2908-2914, Oct. 1994.
Schmidl, “Robust frequency and timing synchronization for OFDM,” IEEE Trans. Commun., vol. 45, pp. 1613-1621, Dec. 1997.
van de Beek, “ML estimation of time and frequency offset in OFDM systems,” IEEE Trans. Signal Processing, vol. 45, pp. 1800-1805, Jul. 1997.
Pollet, “BER sensitivity of OFDM systems to carrier frequency offset and Weiner phase noise,” IEEE Trans. Commun., vol. 43, pp. 191-193, Feb. 1995.
van de Beek, “Low-complex frame synchronization in OFDM systems,” in Proc. ICUPC, Nov. 1995, pp. 982-986.
Coulson, “Maximum likelihood synchronization for OFDM using pilot symbol: Analysis,” IEEE J. Select. Areas Commun., vol. 19, pp. 2495-2503, Dec. 2001.
Gansman, “Optimum and suboptimum frame synchronization for pilot-symbol-assisted modulation,” IEEE Trans. Commun., vol. 45, pp. 1327-1337, Oct. 1997.
Choi, “Frame synchronization in the presence of frequency offset,” IEEE Trans. Commun., vol. 50, pp. 1062-1065, Jul. 2002.
Speth, “Frame synchronization of OFDM systems in frequency selective fading channels” Vehicular Technology Conference, 1997 IEEE 47th vol. 3, May 4-7, 1997 pp. 1807-1811 vol. 3.
Pekonen Harri J.
Talmola Pekka
Vare Jani
Banner & Witcoff , Ltd.
Nokia Corporation
Torres Juan A
LandOfFree
Digital broadcast service discovery correlation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Digital broadcast service discovery correlation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital broadcast service discovery correlation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4278606