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US 12,452,111 B2Granted
Method, apparatus and communication system for evaluating nonlinear compensation performance
AssigneeFujitsu Limited
InventorsKe Zhang, Zhenning Tao
Life of this patent
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Abstract
A method, an apparatus and a communication system of evaluating a nonlinear compensation performance. The method for evaluating a nonlinear compensation performance comprises: evaluating a nonlinear compensation performance by using a probability-maintained notch signal as a test signal; the probability-maintained notch signal having a probability density function (PDF) that is maintained unchanged after notching as compared with before notching.
Claims9
An apparatus for evaluating a nonlinear compensation performance, comprising:
- a memory;
- and
- a processor coupled to the memory to control execution of a process to:
- evaluate a nonlinear compensation performance by using a probability-maintained notch signal as a test signal,
- the probability-maintained notch signal having a probability density function that is maintained unchanged after notching as compared with before notching,
- wherein, the processor further controls execution of the process to:
- generate the probability-maintained notch signal;
- perform a nonlinear compensation processing on the probability-maintained notch signal, and measure a spectrum of the probability-maintained notch signal subjected to the nonlinear compensation processing;
- and
- estimate performance of the nonlinear compensation processing according to the spectrum.
7 more elements
A communication system, comprising:
- a generator configured to generate a probability-maintained notch signal;
- a digital pre-distorter configured to perform digital pre-distortion processing on the generated probability-maintained notch signal;
- a transmitter configured to transmit the probability-maintained notch signal subjected to the digital pre-distortion processing;
- a spectrum analyzer configured to measure a spectrum of the probability-maintained notch signal subjected to the digital pre-distortion processing and passing through the transmitter;
- and
- a receiver configured to receive the probability-maintained notch signal transmitted by the transmitter.
3 more elements
A communication system, comprising:
- a generator configured to generate a probability-maintained notch signal;
- a transmitter configured to transmit the probability-maintained notch signal generated;
- a receiver configured to receive the probability-maintained notch signal;
- a compensator configured to perform nonlinear post-compensation processing on the received probability-maintained notch signal;
- and
- a calculator configured to calculate a spectrum of the probability-maintained notch signal subjected to the nonlinear post-compensation processing.
3 more elements
Dependencies are inferred from the claim text.