Curve fitting circuit, analog predistorter, and radio frequency signal transmitter
First Claim
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1. A curve fitting circuit, comprising:
- n segmentation processing circuits, wherein n is greater than or equal to 2; and
q first adder circuits, wherein q is a natural number;
wherein each segmentation processing circuit of the n segmentation processing circuits is configured to;
receive an input signal;
intercept a part of the input signal according to a preset rule;
generate a to-be-processed signal according to the intercepted part; and
generate q output signals according to the to-be-processed signal using a polynomial fitting method, wherein parts of the input signal intercepted by different segmentation processing circuits are not exactly the same; and
wherein each first adder circuit is configured to;
receive one signal in the q output signals of each segmentation processing circuit; and
obtain one output signal of the curve fitting circuit according to a sum of received n signals, wherein different first adder circuits receive different output signals in q output signals of a same segmentation processing circuit.
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Abstract
A curve fitting circuit, an analog predistorter, and a radio frequency signal transmitter are disclosed. Each segmentation processing circuit in the curve fitting circuit generates a to-be-processed signal according to a intercepted part of a received signal, and generates q output signals according to the to-be-processed signal. Parts intercepted by different segmentation processing circuits are not exactly the same. Each first adder circuit in the curve fitting circuit receives one signal in the q output signals of each segmentation processing circuit, and obtains one output signal of the curve fitting circuit according to a sum of received n signals.
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Citations
17 Claims
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1. A curve fitting circuit, comprising:
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n segmentation processing circuits, wherein n is greater than or equal to 2; and q first adder circuits, wherein q is a natural number; wherein each segmentation processing circuit of the n segmentation processing circuits is configured to; receive an input signal; intercept a part of the input signal according to a preset rule; generate a to-be-processed signal according to the intercepted part; and generate q output signals according to the to-be-processed signal using a polynomial fitting method, wherein parts of the input signal intercepted by different segmentation processing circuits are not exactly the same; and wherein each first adder circuit is configured to; receive one signal in the q output signals of each segmentation processing circuit; and obtain one output signal of the curve fitting circuit according to a sum of received n signals, wherein different first adder circuits receive different output signals in q output signals of a same segmentation processing circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An analog predistorter, comprising a curve fitting circuit, the curve fitting circuit comprising:
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n segmentation processing circuits, wherein n is greater than or equal to 2; and q first adder circuits, wherein q is a natural number; wherein each segmentation processing circuit of the n segmentation processing circuits is configured to; receive an input signal; intercept a part of the input signal according to a preset rule; generate a to-be-processed signal according to the intercepted part; and generate q output signals according to the to-be-processed signal using a polynomial fitting method, wherein parts of the input signal intercepted by different segmentation processing circuits are not exactly the same; and wherein each first adder circuit is configured to; receive one signal in the q output signals of each segmentation processing circuit; and obtain one output signal of the curve fitting circuit according to a sum of received n signals, wherein different first adder circuits receive different output signals in q output signals of a same segmentation processing circuit. - View Dependent Claims (11, 12, 13)
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14. A radio frequency signal transmitter, comprising a curve fitting circuit, the curve fitting circuit comprising:
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n segmentation processing circuits, wherein n is greater than or equal to 2; and q first adder circuits, wherein q is a natural number; wherein each segmentation processing circuit of the n segmentation processing circuits is configured to; receive an input signal; intercept a part of the input signal according to a preset rule; generate a to-be-processed signal according to the intercepted part; and generate q output signals according to the to-be-processed signal using a polynomial fitting method, wherein parts of the input signal intercepted by different segmentation processing circuits are not exactly the same; and wherein each first adder circuit is configured to; receive one signal in the q output signals of each segmentation processing circuit; and obtain one output signal of the curve fitting circuit according to a sum of received n signals, wherein different first adder circuits receive different output signals in q output signals of a same segmentation processing circuit. - View Dependent Claims (15, 16, 17)
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Specification