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US 8,558,631 B1Granted
Resilient channel and broadcast modulation
AssigneeARRIS Enterprises LLC
InventorsMichael B. Harrington, Francis Joseph O'Keeffe
Life of this patent
Estimating the term…
Abstract
Methods, systems, and apparatuses can provide a plurality of RF channels and outputs using digital modulation and combining. In various examples, generation of digital IQ packetized data in combination with digital switching can increase the number of RF modulated channels, optimize broadcast transmission and/or provide transmission resiliency.
Claims11
An edge modulation system, comprising:
- a controller operable to receive incoming digital data streams and process the incoming digital data streams and direct the incoming digital data streams for modulation;
- one or more I/Q generators operable to receive the processed incoming data streams and to convert digital data contained within the incoming data streams to in-phase and quadrature components;
- one or more modulator subsystems operable to receive the in-phase and quadrature components from the controller and to modulate the processed incoming data streams for transmission over an access network, wherein the modulator subsystem is further operable to digitally combine the in-phase and quadrature components with normal service data received directly from the controller;
- wherein each of the one or more I/Q generators comprise:
- an I/Q generator media access controller operable to provide control and processing for information received from or destined for a switch in the controller;
- a channel coding module operable to receive data from the I/Q generator media access controller, perform digital I/Q channel coding including forward error correction (FEC) interleaving on the data and provide convolutional encoding and symbol mapping for the access network;
- and
- an I/Q encapsulation device operable to packetize I/Q digital data received from the channel coding module.
5 more elements
A computer-implemented method, comprising:
- receiving incoming digital data streams by a controller;
- directing the incoming digital data streams to one of one or more modulators or one or more I/Q generators by the controller;
- converting digital data contained within the incoming data streams to in-phase and quadrature components at the one or more I/Q generators;
- receiving the in-phase and quadrature components from the controller at the one or more modulators;
- digitally combining the in-phase and quadrature components with normal service data received directly from the controller;
- and
- modulating at the one or more modulators the digitally combined in-phase and quadrature components for transmission over an access network;
- and
- wherein the one or more I/Q generators are operable to provide an I/Q generator media access controller operable to provide control and processing for information received from or destined for a switch in the controller, a channel coding module operable to receive data from the I/Q generator media access controller, perform digital I/Q channel coding on the data and provide convolutional encoding and symbol mapping for the access network, and an I/Q encapsulation device operable to packetize I/Q digital data received from the channel coding module.
6 more elements
Dependencies are inferred from the claim text.