Cryptography – Communication system using cryptography – Symmetric key cryptography
Reexamination Certificate
2011-07-05
2011-07-05
Homayounmehr, Farid (Department: 2434)
Cryptography
Communication system using cryptography
Symmetric key cryptography
Reexamination Certificate
active
07974413
ABSTRACT:
A method is provided for generating a coherent chaotic sequence spread spectrum communications system. The method includes phase modulating a carrier with information symbols. The method also includes generating a string of discrete time chaotic samples. The method further includes modulating the carrier in a chaotic manner using the string of discrete time chaotic samples. Each of the discrete time chaotic samples has a shorter sample time interval than the duration of the information symbols. The generating step includes selecting a plurality of polynomial equations. The generating step also includes using residue number system (RNS) arithmetic operations to respectively determine solutions for the polynomial equations. The solutions are iteratively computed and expressed as RNS residue values. The generating step further includes determining a series of digits in the weighted number system based on the RNS residue values. The method further includes synchronizing the chaos generated at the receiver with that generated at the transmitter without periodic transfer of state update information.
REFERENCES:
patent: 3564223 (1971-02-01), Harris et al.
patent: 4646326 (1987-02-01), Backof, Jr. et al.
patent: 4703507 (1987-10-01), Holden
patent: 5007087 (1991-04-01), Bernstein et al.
patent: 5048086 (1991-09-01), Bianco et al.
patent: 5077793 (1991-12-01), Falk et al.
patent: 5276633 (1994-01-01), Fox et al.
patent: 5297153 (1994-03-01), Baggen et al.
patent: 5297206 (1994-03-01), Orton
patent: 5319735 (1994-06-01), Preuss et al.
patent: 5412687 (1995-05-01), Sutton et al.
patent: 5598476 (1997-01-01), LaBarre et al.
patent: 5757923 (1998-05-01), Koopman, Jr.
patent: 5811998 (1998-09-01), Lundberg et al.
patent: 5852630 (1998-12-01), Langberg et al.
patent: 5900835 (1999-05-01), Stein
patent: 5924980 (1999-07-01), Coetzee
patent: 5937000 (1999-08-01), Lee et al.
patent: 6014446 (2000-01-01), Finkelstein
patent: 6023612 (2000-02-01), Harris et al.
patent: 6038317 (2000-03-01), Magliveras et al.
patent: 6078611 (2000-06-01), La Rosa et al.
patent: 6304216 (2001-10-01), Gronemeyer
patent: 6331974 (2001-12-01), Yang et al.
patent: 6377782 (2002-04-01), Bishop et al.
patent: 6570909 (2003-05-01), Kansakoski et al.
patent: 6614914 (2003-09-01), Rhoads et al.
patent: 6744893 (2004-06-01), Fleming-Dahl
patent: 6754251 (2004-06-01), Sriram et al.
patent: 6766345 (2004-07-01), Stein et al.
patent: 6842479 (2005-01-01), Bottomley
patent: 6980656 (2005-12-01), Hinton, Sr. et al.
patent: 6986054 (2006-01-01), Kaminaga et al.
patent: 7023323 (2006-04-01), Nysen
patent: 7027598 (2006-04-01), Stojancic et al.
patent: 7069492 (2006-06-01), Piret et al.
patent: 7076065 (2006-07-01), Sherman et al.
patent: 7078981 (2006-07-01), Farag
patent: 7079651 (2006-07-01), Den Boer et al.
patent: 7095778 (2006-08-01), Okubo et al.
patent: 7133522 (2006-11-01), Lambert
patent: 7170997 (2007-01-01), Petersen et al.
patent: 7190681 (2007-03-01), Wu
patent: 7200225 (2007-04-01), Schroeppel
patent: 7233672 (2007-06-01), Mitchell et al.
patent: 7233969 (2007-06-01), Rawlins et al.
patent: 7233970 (2007-06-01), North et al.
patent: 7245723 (2007-07-01), Hinton, Sr. et al.
patent: 7269198 (2007-09-01), Elliott et al.
patent: 7269258 (2007-09-01), Ishihara et al.
patent: 7272168 (2007-09-01), Akopian
patent: 7277540 (2007-10-01), Shiba et al.
patent: 7415114 (2008-08-01), Lo et al.
patent: 7447386 (2008-11-01), Mitchell et al.
patent: 7529292 (2009-05-01), Bultan et al.
patent: 7643537 (2010-01-01), Giallorenzi et al.
patent: 7779060 (2010-08-01), Kocarev et al.
patent: 7797060 (2010-09-01), Kocarev et al.
patent: 7830214 (2010-11-01), Han et al.
patent: 7853014 (2010-12-01), Blakley et al.
patent: 2002/0099746 (2002-07-01), Tie et al.
patent: 2003/0044004 (2003-03-01), Blakley et al.
patent: 2004/0001556 (2004-01-01), Harrison et al.
patent: 2004/0059767 (2004-03-01), Liardet
patent: 2004/0196212 (2004-10-01), Shimizu
patent: 2005/0031120 (2005-02-01), Samid
patent: 2005/0050121 (2005-03-01), Klein et al.
patent: 2005/0089169 (2005-04-01), Kim et al.
patent: 2005/0207574 (2005-09-01), Pitz et al.
patent: 2005/0274807 (2005-12-01), Barrus et al.
patent: 2006/0072754 (2006-04-01), Hinton et al.
patent: 2006/0123325 (2006-06-01), Wilson et al.
patent: 2006/0209932 (2006-09-01), Khandekar et al.
patent: 2006/0251250 (2006-11-01), Ruggiero et al.
patent: 2007/0121945 (2007-05-01), Han et al.
patent: 2007/0230701 (2007-10-01), Park et al.
patent: 2008/0008320 (2008-01-01), Hinton et al.
patent: 2008/0016431 (2008-01-01), Lablans
patent: 2008/0095215 (2008-04-01), McDermott et al.
patent: 2008/0198832 (2008-08-01), Chester
patent: 2008/0263119 (2008-10-01), Chester et al.
patent: 2008/0294710 (2008-11-01), Michaels
patent: 2008/0294956 (2008-11-01), Chester et al.
patent: 2008/0304553 (2008-12-01), Zhao et al.
patent: 2008/0304666 (2008-12-01), Chester et al.
patent: 2008/0307022 (2008-12-01), Michaels et al.
patent: 2008/0307024 (2008-12-01), Michaels et al.
patent: 2009/0034727 (2009-02-01), Chester et al.
patent: 2009/0044080 (2009-02-01), Michaels et al.
patent: 2009/0110197 (2009-04-01), Michaels
patent: 2009/0122926 (2009-05-01), Azenkot et al.
patent: 2009/0196420 (2009-08-01), Chester et al.
patent: 2009/0202067 (2009-08-01), Michaels et al.
patent: 2009/0245327 (2009-10-01), Michaels
patent: 2009/0279688 (2009-11-01), Michaels et al.
patent: 2009/0279690 (2009-11-01), Michaels et al.
patent: 2009/0296860 (2009-12-01), Chester et al.
patent: 2009/0300088 (2009-12-01), Michaels et al.
patent: 2009/0309984 (2009-12-01), Bourgain et al.
patent: 2009/0310650 (2009-12-01), Chester et al.
patent: 2009/0323766 (2009-12-01), Wang et al.
patent: 2009/0327387 (2009-12-01), Michaels et al.
patent: 2010/0091700 (2010-04-01), Michaels
patent: 2010/0111296 (2010-05-01), Brown et al.
patent: 0 849 664 (1998-06-01), None
patent: 0 949 563 (1999-10-01), None
patent: 2 000 900 (2008-12-01), None
patent: 2 000 902 (2008-12-01), None
patent: 1167272 (1969-10-01), None
patent: WO-0135572 (2001-05-01), None
patent: WO-2006 110954 (2006-10-01), None
patent: WO 2008065191 (2008-06-01), None
patent: WO-2008099367 (2008-08-01), None
patent: WO-2008130973 (2008-10-01), None
patent: WO 2009146283 (2009-12-01), None
Communication Systems Based on Chaos, by Francisco Javier Escribano Aparicio, May 2007.
U.S. Appl. No. 11/737,459, David Chester et al.
U.S. Appl. No. 11/832,160, David Chester et al.
Deckert, T., et al: “Throughput of WLAN with TDMA and Superimposed Transmission with Resource and Traffic Constraints.” Personal, Indoor and Mobile Radio Communications, 2006 IEEE 17th Inter National Symposium on, IEEE, PI, Sep. 1, 2006, pp. 1-5, XP031023581, ISBN: 978-1-4244-0329-5.
Deckert, T., et al: 1-10 “Superposed Signaling Option for Bandwidth Efficient Wireless LANs” Proceedings of the 7th International Symposium on Wireless Personal Multimedia Communications, [Online] Sep. 15, 2004,XPOO2558039.
Manikandan, et al, “A Novel Pulse Based Ultrawide Band System Using Chaotic Spreading Sequences” Communication Systems Software and Middleware, 2007. Comsware 2007. 2nd International Conference on, IEEE, PI, Jan. 1, 2007, pp. 1-5, XP031113946 ISBN: 978-1-4244-0613-5; p. 1, p. 5.
Nakamura, et al, “Chaotic synchronization-based communications using constant envelope pulse” Electrical Engineering in Japan, [Online] vol. 163, No. 3, Feb. 12, 2008 , pp. 47-56, XP002539977 Japan. Retrieved from the Internet: URL:http://www3.interscience.wiley.com/cgi-bin/fulltext/117910986/PDFSTART>; [retrieved on Aug. 4, 2009] p. 47-p. 48; p. 50-p. 51.
Salberg, et al, “Stochastic multipulse-PAM: A subspace modulation technique with diversity” Signal Processing, Elsevier Science Publishers B.V. Amsterdam, NL, vol. 83, No. 12, Dec. 1, 2003, pp. 2559-2577, XP004467986; ISSN: 0165-1684.
Barile, Margherita, “Bijective,” From MathWorld—A Wolfram Web Resource, created by Eric W. Weisstein. http://mathworld.wolfram.com/Bijective.html.
Weisstein, Eric W., “Injection,” From Ma
Chester David B.
Michaels Alan J.
Fox Rothschild LLP
Harris Corporation
Homayounmehr Farid
Sacco Robert J.
LandOfFree
Spread spectrum communications system and method utilizing... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Spread spectrum communications system and method utilizing..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spread spectrum communications system and method utilizing... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2631267