Apparatus and method for data compression and decompression based on calculation of error vector magnitude
AssigneeElectronics and Telecommunications Research Institute
InventorsJe-Won Lee, Eun-Hee Hyun, Heung-Mook Kim, Joon-Young Jung
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Abstract
A data compression apparatus includes a lossy compression unit for calculating, in advance, a reference error vector magnitude depending on lossy compression and decompression by removing lower bits from a data signal composed of bitstreams, for setting removal target lower bits satisfying a preset error vector magnitude requirement, and for lossily compressing the data signal by removing the removal target lower bits from the data signal, and a communication unit for transmitting the compressed data signal to a data decompression apparatus.
Claims20
A data compression apparatus, comprising:
- a lossy compression unit for calculating, in advance, a reference error vector magnitude depending on lossy compression and decompression by removing lower bits from a data signal composed of bitstreams, for setting removal target lower bits satisfying a preset error vector magnitude requirement, and for lossily compressing the data signal by removing the removal target lower bits from the data signal;
- and
- a communication unit for transmitting the compressed data signal to a data decompression apparatus.
A data decompression apparatus, comprising:
- a communication unit data for receiving a compressed data signal from a data compression apparatus;
- and
- a lossy decompression unit for setting recovery target lower bits corresponding to removal target lower bits that minimize an error vector magnitude using one or more of distribution characteristics of a data signal corresponding to the compressed data signal and distribution characteristics of removal target lower bits corresponding to the compressed data signal, and lossily decompressing the compressed data signal using the set recovery target lower bits.
A data compression method, comprising:
- calculating, in advance, a reference error vector magnitude depending on lossy compression and decompression by removing lower bits from a data signal composed of bitstreams;
- setting removal target lower bits satisfying a preset error vector magnitude requirement;
- lossily compressing the data signal by removing the removal target lower bits from the data signal;
- and
- transmitting the compressed data signal to a data decompression apparatus.
Dependencies are inferred from the claim text.