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US 12,525,983 B2Granted
Signal folding method and device
AssigneeHuawei Technologies Co., Ltd.
InventorsZhiqiang Yun, Xiaowen Dong, Jinfeng Mu, Xu Li
Life of this patent
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Abstract
A signal folding device receives an input signal, and performs frequency modulation on a plurality of first analog signals based on the input signal to obtain a plurality of modulated first analog signals, where a frequency difference between two adjacent first analog signals in the plurality of modulated first analog signals is the same. The signal folding device may filter the plurality of modulated first analog signals based on a specified bandwidth to obtain a second analog signal, and demodulate the second analog signal to obtain an output signal. The output signal is a folded signal of the input signal within a target amplitude, and the second analog signal is an analog signal within the bandwidth.
Claims20
A signal folding method, comprising:
- receiving an input signal;
- and
- performing signal folding in an analog domain, wherein performing the signal folding comprises:
- performing, based on the input signal, frequency modulation on a first plurality of first analog signals to obtain a second plurality of modulated first analog signals, wherein a frequency difference between two adjacent modulated first analog signals is the same;
- filtering, based on a bandwidth, the second plurality to obtain a second analog signal, wherein the first plurality and the second analog signal are optical signals, wherein the second analog signal is within the bandwidth, and wherein the bandwidth corresponds to the frequency difference;
- and
- demodulating the second analog signal to obtain an output signal, wherein the output signal is a first electrical signal and is a folded signal of the input signal within a target amplitude, wherein the target amplitude corresponds to the bandwidth, and wherein demodulating the second analog signal comprises:
- performing frequency reduction processing on the second analog signal to obtain a frequency-reduced second analog signal, wherein a first frequency of the frequency-reduced second analog signal is lower than a second frequency of the second analog signal, and wherein the frequency-reduced second analog signal is a second electrical signal;
- and
- demodulating the frequency-reduced second analog signal to obtain the output signal.
7 more elements
A signal folding device, comprising:
- a memory configured to store instructions;
- and
- a processor coupled to the memory and configured to execute the instructions to:
- receive an input signal;
- and
- perform signal folding in an analog domain, wherein performing the signal folding comprises:
- performing, based on the input signal, frequency modulation on a first plurality of first analog signals to obtain a second plurality of modulated first analog signals, wherein a frequency difference between two adjacent modulated first analog signals is the same;
- filtering, based on a bandwidth, the second plurality to obtain a second analog signal, wherein the first plurality and the second analog signal are optical signals, wherein the second analog signal is within the bandwidth, and wherein the bandwidth corresponds to the frequency difference;
- and
- demodulating the second analog signal to obtain an output signal, wherein the output signal is a first electrical signal and is a folded signal of the input signal within a target amplitude, wherein the target amplitude corresponds to the bandwidth, and wherein demodulating the second analog signal comprises:
- performing frequency reduction processing on the second analog signal to obtain a frequency-reduced second analog signal, wherein a first frequency of the frequency-reduced second analog signal is lower than a second frequency of the second analog signal, and wherein the frequency-reduced second analog signal is a second electrical signal;
- and
- demodulating the frequency-reduced second analog signal to obtain the output signal.
10 more elements
A computer program product comprising instructions stored on a non-transitory computer-readable medium that, when executed by a processor, cause an electronic device to:
- receive an input signal;
- and
- perform signal folding in an analog domain, wherein performing the signal folding comprises:
- performing, based on the input signal, frequency modulation on a first plurality of first analog signals to obtain a second plurality of modulated first analog signals, wherein a frequency difference between two adjacent modulated first analog signals is the same;
- filtering, based on a bandwidth, the second plurality to obtain a second analog signal, wherein the first plurality and the second analog signal are optical signals, wherein the second analog signal is within the bandwidth, and wherein the bandwidth corresponds to the frequency difference;
- and
- demodulating the second analog signal to obtain an output signal, wherein the output signal is a first electrical signal and is a folded signal of the input signal within a target amplitude, wherein the target amplitude corresponds to the bandwidth, and
- wherein demodulating the second analog signal comprises:
- performing frequency reduction processing on the second analog signal to obtain a frequency-reduced second analog signal, wherein a first frequency of the frequency-reduced second analog signal is lower than a second frequency of the second analog signal, and wherein the frequency-reduced second analog signal is a second electrical signal;
- and
- demodulating the frequency-reduced second analog signal to obtain the output signal.
8 more elements
Dependencies are inferred from the claim text.