Systems and methods for transmitting data via an electrical cable
AssigneeCable Television Laboratories, Inc.
InventorsRuoyu Sun, Jingjie Zhu, Mark J. Poletti
Life of this patent
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Abstract
A method for transmitting data via a coaxial electrical cable includes (a) converting symbols of each input data stream of a plurality of parallel input data streams from digital form to analog form, (b) individually filtering symbols of each input data stream, (c) transforming symbols of each input data stream from a first frequency-domain to a first time-domain, to generate parallel first time-domain samples, (d) converting the first time-domain samples to a serial multi-carrier signal, and (e) injecting the multi-carrier signal onto the coaxial electrical cable.
Claims16
A method for transmitting data via a cable, comprising:
- mapping data bits of each parallel first input data stream of a plurality of parallel first input data streams into symbols, to generate a plurality of parallel second input data streams;
- modulating symbols of each parallel second input data stream from digital form to analog form, to generate a plurality of parallel third input data steams;
- individually filtering symbols of each parallel third input data stream, to generate a plurality of parallel fourth input data streams;
- transforming symbols of each parallel fourth input data stream from a first frequency-domain to a first time-domain, to generate a plurality of parallel first time-domain samples;
- converting the plurality of parallel first time-domain samples to a serial multi-carrier signal;
- and
- injecting the serial multi-carrier signal onto the cable.
A transmitter, comprising:
- a mapping subsystem configured to map data bits of each parallel first input data stream of a plurality of parallel first input data streams into symbols, to generate a plurality of parallel second input data streams;
- a modulation subsystem communicatively coupled to the mapping subsystem and configured to modulate symbols of each parallel second input data stream from digital form to analog form, to generate a plurality of parallel third input data streams;
- a filtering subsystem communicatively coupled to the modulation subsystem and configured to individually filter symbols of each parallel third input data stream, to generate a plurality of parallel fourth input data streams;
- an inverse Fourier transformation subsystem communicatively coupled to the filtering subsystem and configured to transform symbols of each parallel fourth input data stream from a frequency-domain to a time-domain, to generate a plurality of parallel time-domain samples;
- and
- a parallel-to-series (P/S) conversion subsystem communicatively coupled to the inverse Fourier transformation subsystem and configured to convert the plurality of parallel time-domain samples into a serial multi-carrier signal.
Dependencies are inferred from the claim text.