Digital receiver with minimum cost index register

Details Digital receiver with minimum cost index register Digital receiver with minimum cost index register

1993-11-16

1996-04-30

Chin, Stephen

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

375264, 375261, 329304, H03D 100, H04L 2706

Patent

active

055132200

ABSTRACT:
Convolutionally encoded information subjected to channel intersymbol interference is decoded by calculating the minimum cost path through a trellis. The trellis terminates in known states. Exploiting the open architecture of the coprocessor, the minimum cost state is checked to ascertain if it is the known, that is, correct state and if it is not, the possible known states are searched by the DSP inside the ECCP active register and the state with the lowest cost amont the possible states is selected.

REFERENCES:
patent: 4493082 (1985-01-01), Cumberton et al.
patent: 4748626 (1988-05-01), Wong
patent: 5151904 (1992-09-01), Reiner et al.
patent: 5185747 (1993-02-01), Farahati
patent: 5220570 (1993-06-01), Lou et al.
"Chapter 4, Channel Coding," Mobile Radio Communications, R. Steel, ed.; by K. H. H. Wong and L. Hanzo, pp. 347-385.

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