Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2007-03-06
2007-03-06
Phu, Phuong (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
C375S285000, C375S296000, C375S265000
Reexamination Certificate
active
10386123
ABSTRACT:
A modulation process for a digital transmission system having an error correcting code and determination of the number of bits to load on a transmission channel. The process judiciously associates a coder for introducing redundancy to the binary information, an interleaver for suppression the correlation to the encoded information and a labeling of the same based on a GRAY type coding in order to associate the said binary information with points of a constellation which is selected among a predetermined set of constellations. The process achieves a precise determination of the order and size of the constellation to utilize and, therefore, the computation of the bit loading as a function of the signal to noise ratio measured in reception and as a function of the bit error rate Pbitat the output of the receiver. The process is well adapted to the Multi Tone transmission system, and to the use of turbo codes.
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Brossier Jean-Marc
Lehmann Frédéric
de Guzman Dennis M.
Jorgenson Lisa K.
Phu Phuong
Seed IP Law Group PLLC
STMicroelectronics S.A.
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