Constellation mapping for modulated communications

Details Constellation mapping for modulated communications Constellation mapping for modulated communications

2006-02-28

2006-02-28

Liu, Shuwang (Department: 2634)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S265000, C375S298000, C375S302000, C375S340000

Reexamination Certificate

active

07006578

ABSTRACT:
Constellations (22) arranged in a concentric circle pattern provide simplified control of modulated communication. A plurality of concentric circles (26, 28, 30) with defined points (24) include convolutionally coded and uncoded bits. Constellation patterns having three or four concentric circles (26, 28, 30) are provided. A magnitude error for each of the points (24) allows for deviations during communication. The constellations (22) provide efficient communication using non-linear channels.

REFERENCES:
patent: 4809277 (1989-02-01), Yano
patent: 5828695 (1998-10-01), Webb
patent: 6005897 (1999-12-01), McCallister et al.
patent: 2003/0002593 (2003-01-01), Galins

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