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US 10,122,567 B2Granted
Signal multiplexing device and signal multiplexing method using layered division multiplexing
AssigneeElectronics and Telecommunications Research Institute
InventorsSung-Ik Park, Jae-Young Lee, Sun-Hyoung Kwon, Heung-Mook Kim, Nam-Ho Hur
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Abstract
An apparatus and method for multiplexing signals using layered division multiplexing are disclosed. A signal multiplexing apparatus according to an embodiment of the present invention includes a combiner configured to combine a core layer signal and an enhanced layer signal at different power levels, and a time interleaver configured to perform interleaving applied to both the core layer signal and the enhanced layer signal.
Claims3
A signal multiplexing apparatus, comprising:
- an injection level controller configured to generate a power-reduced enhanced layer signal by reducing power of an enhanced layer signal;
- a combiner configured to generate a multiplexed signal by combining a core layer signal and the power-reduced enhanced layer signal;
- a time interleaver configured to perform interleaving applied to both a core layer corresponding to the core layer signal and an enhanced layer corresponding to the enhanced layer signal;
- and
- a power normalizer configured to reduce power of the multiplexed signal to power corresponding to the core layer signal,
- wherein the injection level controller corresponds to a scaling factor and the power normalizer corresponds to a normalizing factor, and the scaling factor decreases as a reduction in power corresponding to the injection level controller becomes larger, and the normalizing factor increases as a reduction in power corresponding to the injection level controller becomes larger.
3 more elements
A signal multiplexing method, comprising:
- generating a power-reduced enhanced layer signal by reducing power of an enhanced layer signal;
- combining a core layer signal and the power-reduced enhanced layer signal for generating a multiplexed signal;
- performing interleaving applied to both a core layer corresponding to the core layer signal and an enhanced layer corresponding to the enhanced layer signal;
- and
- reducing power of the multiplexed signal to power corresponding to the core layer signal,
- wherein the reducing power of the enhanced layer signal corresponds to a scaling factor and the reducing power of the multiplexed signal corresponds to a normalizing factor, and the scaling factor decreases as a reduction in power corresponding to the reducing power of the enhanced layer signal becomes larger, and the normalizing factor increases as a reduction in power corresponding to the reducing power of the enhanced layer signal becomes larger.
3 more elements
Dependencies are inferred from the claim text.