Error detection/correction and fault detection/recovery – Pulse or data error handling – Digital data error correction
Reexamination Certificate
2011-03-15
2011-03-15
Alphonse, Fritz (Department: 2112)
Error detection/correction and fault detection/recovery
Pulse or data error handling
Digital data error correction
C714S808000, C714S763000
Reexamination Certificate
active
07908544
ABSTRACT:
A system and method provides extended convolutional coding for packets/frames or superframes used in wireless transmission. A wireless system has an extended convolutional encoder/decoder, a wireless network, a server having an extended convolutional encoding/decoding module, one or more clients, at least one of which performs extended convolutional encoding/decoding; and a wireless transmission unit for the server and one or more clients to communicate via the wireless network. A method for providing the extended convolutional encoding includes the steps of retrieving a set of codes from a database that has a maximal-minimal free distance within a certain range; selecting a subset of the retrieved codes that have the smallest number of paths at the maximal-minimal free distance; and finding extended convolutional codes by selecting a code having a certain rate from the subset of codes that have the smallest number of paths at increased free distances to provide the best candidates. The performance of the extended code can be verified prior to encoding.
REFERENCES:
patent: 4534040 (1985-08-01), Thapar
patent: 4980897 (1990-12-01), Decker et al.
patent: 5612974 (1997-03-01), Astrachan
patent: 5781569 (1998-07-01), Fossorier et al.
patent: 6598203 (2003-07-01), Tang
patent: 2002/0051499 (2002-05-01), Cameron et al.
patent: 2003/0101401 (2003-05-01), Salvi et al.
patent: 2004/0213273 (2004-10-01), Ma
patent: 1 075 088 (2001-02-01), None
Morii, M. et al., “Improved Cedervell-Johannesson Algorithm for Computing the Distance Spectrum of Convolutional Codes”, Electronics and Communications in Japan, part 3, vol. 79, No. 1, pp. 67-80 (1996); translated from Denshi Joho Tsushin Gakkai Ronbunshi, vol. 78-A, No. 3, pp. 416-426 (Mar. 1995).
Benedetto, S. et al. “Design of Parallel Concatenated Convolutional Codes”, IEEE Trans. on Communications, vol. 44, No. 5, pp. 591-600 (May 1996).
Frenger, P. et al. “Combined Coding and Spreading in CDMA Systems Using Maximum Free Distance Convolutional Codes”, IEEE 48th Vehicular Technology Conf., vol. 3, pp. 2497-2501 (1998).
Yeh, E. et al. “An FEC Overlay for Idle Slot Utilization for IS-136”, IEEE 49th Vehicular Technology Conf., pp. 392-396 (1999).
Zhang, W. “Enhancement of Australian VHF Combat Net Radios”, IEEE Military Communications Conf., vol. 1 of 2, Proc., Communications for Network-Centric Operations: Creating the Information Force, pp. 185-189 (2001).
Valenti, M. et al. “Distributed Turbo Codes: Towards the Capacity of the Relay Channel”, IEEE 58th Conf. on Vehicular technology, vol. 1, pp. 322-326 (2003).
International Preliminary Report on Patentability for appln. No. PCT/IB2005/051714 (Nov. 29, 2006).
Lin, S. et al. “Error Control Coding: Fundamentals and Applications”, cover, pp. i-iv, pp. 329-37 (1983).
Alphonse Fritz
NXP B.V.
LandOfFree
Extended convolutional codes does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Extended convolutional codes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extended convolutional codes will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2750139