Data level selection for multilevel VSB transmission system

Details Data level selection for multilevel VSB transmission system Data level selection for multilevel VSB transmission system

1994-04-08

1996-04-16

Groody, James J.

Television

Format

Including additional information

375270, 375277, 341 56, H04N 708, H03C 100, H03M 700

Patent

active

055087485

ABSTRACT:
A system for determining the data bits represented by the received symbols of one or more data constellations includes converting the received symbols into multi-bit values (preferably in two's complement form), selecting a number of the most significant bits of each of the multi-bit values and inverting the most significant bit thereof to derive the data bits represented by the respective symbol.

REFERENCES:
patent: 5087975 (1992-02-01), Citta et al.
patent: 5410368 (1995-04-01), Krishnamurthy
IEEE Transaction on Communications, vol. 37, No. 6, Jun. '89, pp. 626-634 "Influence of Coding & Hardware Imperfections on the Bit Error Structure of Multilevel QAM Systems," Bessai & Lorek.
IEEE Global Telecommunications Conf. & Exhibition, Hollywood, vol. 2, Nov. 28, 1988, pp. 858-864, Modified 256-QAM for Logarithmic PCM, Sundberg, Wong & Steele.

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