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1. AU2001280930 - Variable low frequency offset, differential, ook, high-speed twisted pair communication

Office
Australia
Application Number 2001280930
Application Date 30.07.2001
Publication Number 2001280930
Publication Date 08.11.2001
Publication Kind A
IPC
H04L 27/02
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
02Amplitude-modulated carrier systems, e.g. using on/off keying; Single sideband or vestigial sideband modulation
Applicants Telenetwork, Inc.
Inventors Rumbaugh, Stephen Roy
Priority Data 09649309 28.08.2000 US
Title
(EN) Variable low frequency offset, differential, ook, high-speed twisted pair communication
Abstract
(EN)
A method and system for transmitting data over twisted pair copper wire using a low frequency offset, differential voltage, on-off keying (OOK) transmission (102) are described. An analog or a digital signal is sent or received and converted, if necessary, into or from serial format onto or out of a twisted pair. The signal uses an OOK modulated sinusoidal offset signal (103) with an associated differential voltage. A floating reference ground set positive or negative for the differential nature of the transmission may be required. The OOK modulated offset low frequency (103) is being keyed to the floating ground reference that is set to a minimum signal to noise ratio (SNR) level. The SNR level may be set by adjusting the voltage separation between floating ground and the offset of the sinusoidal low frequency wave. The amplitude of the sinusoidal wave may be adjusted to provide increased transmission distance and better SNR.

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