SYSTEM AND METHODS FOR DATA COMPRESSION AND NONUNIFORM QUANTIZERS
First Claim
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1. A method for differentiator-based compression of digital data, comprising:
- generating a predicted signal using a least means square (LMS)-based filtering method;
using a subtraction module, subtracting the predicted signal from a sample of an original signal to obtain an error signal; and
using a quantization module, quantizing the error signal to obtain a quantized error signal.
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Abstract
A method for differentiator-based compression of digital data includes (a) using a subtraction module, subtracting a predicted signal from a sample of an original signal to obtain an error signal, (b) using a quantization module, quantizing the error signal to obtain a quantized error signal, and (c) generating the predicted signal using a least means square (LMS)-based filtering method.
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Citations
20 Claims
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1. A method for differentiator-based compression of digital data, comprising:
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generating a predicted signal using a least means square (LMS)-based filtering method; using a subtraction module, subtracting the predicted signal from a sample of an original signal to obtain an error signal; and using a quantization module, quantizing the error signal to obtain a quantized error signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for differentiator-based decompression, comprising:
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generating a predicted signal using a least means square (LMS)-based filtering method; and using an addition module, adding the predicted signal to a quantized error signal to obtain a quantized original signal. - View Dependent Claims (10, 11, 12, 13)
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14. A method for transmitting data, comprising:
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sampling an analog original signal to obtain a sample of the original signal; generating a first predicted signal using a first least means square (LMS)-based filtering method; subtracting the first predicted signal from the sample of the original signal to obtain an error signal; quantizing the error signal to obtain a quantized error signal; mapping the quantized error signal from U bits to V bits to obtain a mapped error signal, U and V each being respective integers, and U being greater than V; modulating a carrier signal according to mapped error signal to obtain a transmission signal; transmitting the transmission signal from a first location to a second location using a transmission medium; demodulating the transmission signal to obtain a demodulated signal; mapping the demodulated signal from V to U bits to obtain the quantized error signal; generating a second predicted signal using a second LMS-based filtering method; using an addition module, adding the second predicted signal to the quantized error signal to obtain a quantized original signal; and converting the quantized original signal into an analog output signal. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification