Method for transmitting source encoded digital signals

Error detection/correction and fault detection/recovery – Pulse or data error handling – Digital data error correction

Reexamination Certificate

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C714S776000

Reexamination Certificate

active

06851083

ABSTRACT:
A method of transmitting encoded digital signals and decoding the digital signals at a receiver. During source encoding, the signals are divided into a plurality of subunits. Each subunit is assigned one of a plurality of differing levels of significance. The subunits are hierarchically ordered in a data frame according to their levels of significance. The subunits are then channel encoded utilizing a variable rate code. The rate increases for increasing levels of significance. At the receiver decoder, a subset of the subunits are correctly decoded to produce a correct portion of decoded data. The correct portion is defined by a position of a first error in the data frame. The position of the first error in the data frame is dependent upon at least one of the encoding rate, channel quality, and decoding complexity. The digital signals are then reconstructed using only the correct portion of decoded data.

REFERENCES:
patent: 4797887 (1989-01-01), Yamasaki et al.
patent: 5617541 (1997-04-01), Albanese et al.
patent: 6307487 (2001-10-01), Luby
patent: 6490705 (2002-12-01), Boyce
Cox, R.V.; Hagenauer, J.; Seshadri, N.; Sundberg, C.-E.; A sub-band coder designed for combined source and channel coding [speech coding], International Conference on Acoustics, Speech, and Signal Processing, Apr. 11-14, 1988, page(s): 235-238, vol. 1.*
Albanese, A.; Blomer, J.; Edmonds, J.; Luby, M.; Sudan, M.; Priority encoding transmission, Proceedings of the 35th Annual Symposium on Foundations on Computer Science, Nov. 20-22, 1994, page(s): 604-612.*
Albanese, A.; Blomer, J.; Edmonds, J.; Luby, M.; Sudan, M.; Priority encoding transmission, IEEE Transactions on Information Theory, vol.: 42 Issue: 6, Nov. 1996, page(s): 1737-1744.*
Shacham, N.; Multipoint communication by hierarchically encoded data, Eleventh Annual Joint Conference of the IEEE Computer and Communications Societies, May 4-8, 1992, page(s): 2107-2114 vol. 3.*
Fischer, T.R.; Qing Chen; Subband image coding for packet erasure channels, Proceedings of the International Conference on Image Processing, vol.: 1, Sep. 16-19, 1996, pp(s): 589-592.*
Seeger, A., “Information Theoretical Based Design of Hierarchical Channel Coding and Modulation for Mobile Radio Channels,” Signal Processing: Image Communication, vol. 12, Apr. 1998; pp. 117-125.
Berrou, C. et al; “Digital Television: Hierarchical Channel Coding Using Turbo-Codes,” International Conference on Communications (ICC), US, New York, IEEE, May 1, 1994; pp.; 1255-1259.
Hagenauer, J., “Rate-Compatible Punctured Convolutional Codes (RCPC Codes) and Their Applications,” IEEE Transactions on Communications, vol. 36, No. 4, Apr. 1988, pp. 389-400.
Hoeher, P. et al., “Performance of an RCPC-Coded OFDM-based Digital Audio Broadcasting (DAB) System,” IEEE Global Telecommunications Conference Globecom '91, Dec. 2, 1991, pp. 0040-0046.
Hoeher, P., “Unequal Error Protection for Digital Mobile DS-CDMA Radio Systems,” IEEE, May 1, 1994, pp. 1236-1241; XP 000438698.
Schleger, C., “Trellis Coding,” Chapter 6, Decoding Strategies, Jun. 1997, IEEE Press, pp. 153-191; XP-002137976.
International Search Report; International Application No. PCT/EP99/10459; May 18, 2000, pp. 1-2.

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