Method and apparatus for performing trellis coded modulation...

Details Method and apparatus for performing trellis coded modulation... Method and apparatus for performing trellis coded modulation...

2008-05-27

2008-05-27

Vo, Don N (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

Reexamination Certificate

active

07379505

ABSTRACT:
A method and apparatus for performing trellis coded modulation of signals for transmission on a TDMA channel of a cable network, such as a DOCSIS cable network, is provided. In an embodiment, an upstream modulator portion of a cable modem receives burst data, selectively encodes the burst data for trellis coded modulation to generate encoded symbols, and modulates the encoded symbols for selective transmission over a time division multiple access (TDMA) channel or a synchronous code division multiple access (S-CDMA) channel of the cable network.

REFERENCES:
patent: 5233349 (1993-08-01), Moulsley
patent: 6791995 (2004-09-01), Azenkot et al.
patent: 7035338 (2006-04-01), Stopler
patent: 2002/0126648 (2002-09-01), Kuchi et al.
patent: 2002/0154620 (2002-10-01), Azenkot et al.
“Radio Frequency Interface Specification SP-RFI-I05-991105”, Data-Over-Cable Service Interface Specifications; Interm Specification; Nov. 1999; (p.21, Sec. 4.2.1 (Upstream-Overview), Paragraph 5).
“Radio Frequency Interface Specification SP-RFIv2.0-I03-021218, ” Data-Over-Cable Service Interface Specifications, Cable Television Laboratories, Inc., Dec. 18, 2002, pp. i-xxiv and 1-482.

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