Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2004-01-14
2010-11-02
Payne, David C (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
Reexamination Certificate
active
07826546
ABSTRACT:
A transmitter codes data to be transferred, performs serial-parallel conversion of the data to two signal groups, and passes one of the groups to a first transmission unit and the other one to a second transmission unit. Each of the first transmission unit and the second transmission unit performs a prephasing process on each of signals included in the input signal group received, performs inverse Fourier transform thereon, and transmits the signal with a predetermined polarization. The polarity of the predetermined polarization of the first transmission is orthogonal to a polarity of the predetermined polarization of the second transmission unit. A receiver receives a signal transmitted from the transmitter with a predetermined polarization, performs Fourier transform thereon, performs MLD (Maximum Likelihood Detector) detection thereof, performs parallel-serial conversion in a parallel-serial converting unit, and decodes a signal originating from the parallel-serial conversion to output the transferred signal. The transmitter performs the prephasing process on each of the signals based on feedback information sent from the receiver in such a way that a probability that a same phase is generated becomes lower.
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Honigman Miller Schwartz and Cohn LLP
National Institute of Information and Communications Technology
Nguyen Leon-Viet Q
Payne David C
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