Fractional rate modulation

Details Fractional rate modulation Fractional rate modulation

1990-09-26

1993-07-20

Chin, Stephen

Pulse or digital communications

Repeaters

Testing

341 61, H04L 512

Patent

active

052300102

ABSTRACT:
Fractional rate modulation is accomplished by separating incoming data into frames of bits. Each frame is partitioned into bit words of unequal lengths. The words are divided by a modulus to obtain remainders. The remainders are transmitted using for example QAM modulation. At the receiving end the process is reversed. The ratio of the baud rate of the system to the incoming bit rate defines the modulus as well as the number of QAM modulation points.

REFERENCES:
patent: 4805167 (1989-02-01), Leslie et al.
patent: 4882726 (1989-11-01), Lang et al.
patent: 5008902 (1991-04-01), Key et al.
patent: 5103227 (1992-04-01), Betts

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