Patents by Inventor Jianyang Shi

Jianyang Shi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10608751
    Abstract: A method of digital communication is described. The method includes generating a first orthogonal frequency division multiplexed (OFDM) signal from a first portion of information bits received at the communication apparatus, generating a second OFDM signal from a second portion of information bits received at the communication apparatus, generating a first input for a modulator using the first OFDM signal and the second OFDM signal, generating a second input for the modulator using the second OFDM signal and the second OFDM signal, and operating the modulator to produce a modulated signal from the first input and the second input.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: March 31, 2020
    Assignee: ZTE Corporation
    Inventors: Jianjun Yu, Junwen Zhang, Jianyang Shi
  • Patent number: 10236991
    Abstract: An optical signal transmission can use probabilistically shaped technique to improve performance and increase the transmission capacity. For instance, a 30-Gbit/s/? probabilistically shaped (PS) 1024-QAM DFT-S OFDM was experimentally demonstrated over 40-km SSMF in an intensity modulation-direct detection system. The Achievable Information Rate (AIR) 9.5344-bits/QAM symbol of PS-1024-QAM modulation is first achieved in the experiment and shows feasibility for OFDM.
    Type: Grant
    Filed: March 2, 2018
    Date of Patent: March 19, 2019
    Assignee: ZTE Corporation
    Inventors: Jianjun Yu, Jianyang Shi
  • Patent number: 10212010
    Abstract: A digital communication technique, implementable in a digital communication system, includes performing a training phase in which the transmitter sends one or more transmissions of pulse amplitude modulation (PAM) signals wherein the PAM signals are modulated using one or more data-to-PAM-symbol mapping schemes, performing a feedback phase in which the transmitter receives a feedback message from a receiver, the feedback message indicative of a change to be made to data-to-PAM-symbol modulation schemes, and implementing a data transmission phase in which data is transmitted using a current PAM symbol mapping scheme based on the feedback message, wherein at least some symbols of the current PAM symbol modulation scheme are unequally spaced with respect to each other.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: February 19, 2019
    Assignee: ZTE Corporation
    Inventors: Junwen Zhang, Jianjun Yu, Yi Cai, Jianyang Shi
  • Publication number: 20190052388
    Abstract: Methods and systems for optical signal transmission, particularly with carrier-less amplitude and phase (CAP) modulation and direct detection, are disclosed. In one exemplary aspect, a method of optical signal transmission is disclosed. The method includes receiving information bits at an input interface; mapping the information bits to a plurality of modulation symbols; separating in-phase (I) and quadrature (Q) components of the plurality of modulation symbols such that the I and Q components form a Hilbert pair in a resulting signal; pre-dispersing the resulting signal with an inverse of a phase delay of an expected chromatic dispersion to obtain a pre-dispersed signal; converting the pre-dispersed signal from digital domain to analog domain using a digital to analog conversion circuit; performing modulation of an output of the digital to analog conversion circuit to generate an output signal; and transmitting, over an optical transmission medium, the output signal from the modulation.
    Type: Application
    Filed: August 14, 2017
    Publication date: February 14, 2019
    Inventors: Jianjun Yu, Jianyang Shi, Junwen Zhang, Xin Xiao
  • Publication number: 20190020514
    Abstract: A digital communication technique, implementable in a digital communication system, includes performing a training phase in which the transmitter sends one or more transmissions of pulse amplitude modulation (PAM) signals wherein the PAM signals are modulated using one or more data-to-PAM-symbol mapping schemes, performing a feedback phase in which the transmitter receives a feedback message from a receiver, the feedback message indicative of a change to be made to data-to-PAM-symbol modulation schemes, and implementing a data transmission phase in which data is transmitted using a current PAM symbol mapping scheme based on the feedback message, wherein at least some symbols of the current PAM symbol modulation scheme are unequally spaced with respect to each other.
    Type: Application
    Filed: July 13, 2017
    Publication date: January 17, 2019
    Inventors: Junwen Zhang, Jianjun Yu, Yi Cai, Jianyang Shi
  • Publication number: 20180269988
    Abstract: A method of digital communication is described. The method includes generating a first orthogonal frequency division multiplexed (OFDM) signal from a first portion of information bits received at the communication apparatus, generating a second OFDM signal from a second portion of information bits received at the communication apparatus, generating a first input for a modulator using the first OFDM signal and the second OFDM signal, generating a second input for the modulator using the second OFDM signal and the second OFDM signal, and operating the modulator to produce a modulated signal from the first input and the second input.
    Type: Application
    Filed: March 14, 2018
    Publication date: September 20, 2018
    Inventors: Jianjun Yu, Junwen Zhang, Jianyang Shi
  • Publication number: 20180262274
    Abstract: An optical signal transmission can use probabilistically shaped technique to improve performance and increase the transmission capacity. For instance, a 30-Gbit/s/?, probabilistically shaped (PS) 1024-QAM DFT-S OFDM was experimentally demonstrated over 40-km SSMF in an intensity modulation-direct detection system. The Achievable Information Rate (AIR) 9.5344-bits/QAM symbol of PS-1024-QAM modulation is first achieved in the experiment and shows feasibility for OFDM.
    Type: Application
    Filed: March 2, 2018
    Publication date: September 13, 2018
    Inventors: Jianjun Yu, Jianyang Shi