Digital filter for noise and error removal in transmitted analog

Details Digital filter for noise and error removal in transmitted analog Digital filter for noise and error removal in transmitted analog

1998-03-30

2000-10-24

Pham, Chi H.

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

375355, H03D 100

Patent

active

061378445

ABSTRACT:
A bit of a data signal is encoded with a value of a transmission clock signal if the bit corresponds to a zero. If the bit corresponds to a one, then the bit is encoded with an inverse of the value of the transmission clock signal. After transmission, the encoded signal is decoded by a counter and a comparator. The counter samples the encoded bit of the data signal into a plurality of sampled signals and inverts a portion of the sampled signals. The counter counts the number of sampled signals corresponding to a particular value such as a one or zero. When most of the sampled signals correspond to the particular value, a comparator outputs a decoded signal having a value corresponding to the particular value. When most of the sampled signals do not correspond to the particular value, the comparator outputs a decoded signal having a value corresponding to an inverse of the particular value. The number of sampled signals counted indicates the probability that the decoded signal matches the encoded signal and can be used to determine the integrity of the decoding system.

REFERENCES:
patent: 4025721 (1977-05-01), Graupe et al.
patent: 4025853 (1977-05-01), Addeo
patent: 4185168 (1980-01-01), Graupe et al.
patent: 4493080 (1985-01-01), Campbell
patent: 4630283 (1986-12-01), Schiff
patent: 4672637 (1987-06-01), Halpern et al.
patent: 4796260 (1989-01-01), Schilling et al.
patent: 4829543 (1989-05-01), Borth et al.
patent: 4847869 (1989-07-01), Labedz et al.
patent: 4849974 (1989-07-01), Schilling et al.
patent: 4849976 (1989-07-01), Schilling et al.
patent: 5001445 (1991-03-01), Horvath et al.
patent: 5247470 (1993-09-01), McKown et al.
patent: 5323425 (1994-06-01), Colamonico et al.
patent: 5390207 (1995-02-01), Fenton et al.
patent: 5426392 (1995-06-01), Kornfeld
patent: 5428631 (1995-06-01), Zejavo
patent: 5481553 (1996-01-01), Suzuki et al.
patent: 5495499 (1996-02-01), Fenton et al.
patent: 5559881 (1996-09-01), Sih
patent: 5598086 (1997-01-01), Somerville
patent: 5646991 (1997-07-01), Sih
patent: 5673130 (1997-09-01), Sundstrom et al.
patent: 5675644 (1997-10-01), Sih
patent: 5697081 (1997-12-01), Lyall, Jr. et al.
patent: 5742135 (1998-04-01), Horst
patent: 5815217 (1998-09-01), Kumazawa et al.
patent: 5815634 (1998-09-01), Daum et al.
patent: 5938790 (1999-08-01), Marrow
patent: 5956429 (1999-09-01), Burns
Fading Channel communications; 1/80; Peter Monsen, IEEE Communications Society Magazine, vol. 18, No. 1, pp. 27-36.
Soft Interference Cancellation in Multiuser Communications; Vieri Vanghi & Branimir Vojcic; 1996; Wireless Personal Communications 2: pp. 111-128.

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