Pulse or digital communications – Receivers – Particular pulse demodulator or detector
Patent
1992-08-17
1995-05-16
Chin, Stephen
Pulse or digital communications
Receivers
Particular pulse demodulator or detector
375262, 371 374, 341 94, 348466, H03D 100, H0HL 2706
Patent
active
054168040
ABSTRACT:
Apparatus for decoding digital signals, such as digital television signals, which have been transmitted by concatenated coded modulation using partitioning levels of a constellation of points representing different code values. The apparatus includes successive decoding stages which respectively operate on the successive partitioning levels of the constellation. Each decoding stage includes a detector for detecting received points in the relevant partitioning level. At least one stage includes an internal decoder for generating estimated bit sequences in accordance with an inner code and erasures of bit sequences for which the estimation is found to be ambiguous, an external decoder decoding in accordance with an outer code and correcting bit sequence erasures, and an encoder for encoding the output of the external decoder and supplying the resulting re-encoded bit sequences to the succeeding stages of the decoding apparatus to validate detection thereby of points in their partitioning levels. The apparatus may be arranged to produce only a predetermined maximum number of erased bit sequences.
REFERENCES:
patent: 4646301 (1987-02-01), Okamoto et al.
patent: 4653052 (1987-03-01), Doi et al.
patent: 5029185 (1991-07-01), Wei
patent: 5224104 (1993-06-01), Weng
patent: 5233629 (1993-08-01), Paik et al.
Branka Vucetic, "Bandwidth Efficient Concatenated Coding Schemes for Fading Channels", Jan. 1993, pp. 50-61.
IEEE Journal on Selected Areas in Communications, vol. 11, No. 1, Jan. 1993, pp. 111-118, Heegard et al., "Practical Coding for QAM Transmission of HDTV".
1990 IEEE, pp. 106-110, Gulliver, "Diversity Combining and Reed-Salomon Coding for Fast Frequency Hopped Noncoherent MFSK".
G. J. Pottie et al., "Multilevel Codes Based on Partitioning", IEEE Trans. on Information Theory, vol. 35, No. 1, Jan. 1989, pp. 87-89.
G. Ungerboeck, "Channel Coding with Multilevel/Phase Signals", IEEE Trans. on Information Theory, vol. IT-28, No. 1, Jan. 1982, pp. 55-67.
R. H. Deng et al., "High Rate Concatenated Coding Systems Using Bandwidth Efficient Trellis Inner Codes", IEEE Trans. on Communications, vol. 37, No. 5, May 1989, pp. 420-427.
IEEE Transactions on Information Theory, vol. 35, No. 1, Janvier 1989, pp. 87-98, Piscatawa, US; G. Pottie et al; "Multilevel Codes Based on Partitioning".
Search Report.
Chouly Antoine
Khaled Fazel
Chin Stephen
Eason Leroy
Le Amanda T.
U.S. Philips Corporation
LandOfFree
Digital signal decoder using concatenated 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 Digital signal decoder using concatenated codes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital signal decoder using concatenated codes will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-644016