Patents by Inventor Changrong YE

Changrong YE 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: 11973514
    Abstract: A low-complexity selective mapping method using cyclic redundancy check is provided. In performing coding, a transmitter adds a check bit to information bits to be transmitted to obtain modulated data. Demodulation is performed on an M-order modulation symbol received by a receiver to obtain a decoding result of a coding polynomial of the modulation symbol and bit information received by the receiver. A modulo-2 division result of the decoding result of the coding polynomial and a generation polynomial is calculated. In a case that a remainder of the modulo-2 division result is equal to zero, if the modulated data corresponding to the same index value of the receiver and the transmitter are identical, a current iteration is stopped, and a current value is outputted as a phase rotation sequence index recovery value. Finally, the receiver obtains a decoded signal.
    Type: Grant
    Filed: February 1, 2021
    Date of Patent: April 30, 2024
    Assignee: CHONGQING UNIVERSITY OF POSTS AND TELECOMMUNICATIONS
    Inventors: Guojun Li, Junbing Li, Congji Yin, Changrong Ye
  • Patent number: 11693654
    Abstract: An embedded GPU-based wideband parallel channelized receiving method includes: constructing an OpenCL platform; decimating a wideband signal read in the OpenCL platform at an interval indicated by the number of channels; assigning data in each row to one of multiple work groups for processing; filtering data on each of channels based on a coefficient of a polyphase filter on a branch; multiplying the filtered data by a factor; and performing an FFT on the formed two-dimensional matrix by columns to obtain data outputted from each of the channels.
    Type: Grant
    Filed: February 1, 2021
    Date of Patent: July 4, 2023
    Assignee: CHONGQING UNIVERSITY OF POSTS AND TELECOMMUNICATIONS
    Inventors: Guojun Li, Feixiang Tian, Changrong Ye, Zunli Wang, Yiping Luo
  • Patent number: 11695600
    Abstract: The present invention relates to the field of digital signal processing, and in particular to a Costas sequence time-frequency joint synchronization method based on all-phase spectrum correction. The method improves the defects existing in a discrete frequency spectrum correction algorithm using short-time Fourier transform and sliding correlation. The improvement mainly comprises: the present disclosure provides a solution based on iterative optimization: when an actual frequency offset is an integral multiple of the spectral resolution, a large error can occur, frequency offset correction and time delay correction are carried out on a signal by using an estimated value having a large estimated error, then estimation is carried out again, and the frequency offset of the signal is not a special value by means of an iteration mode.
    Type: Grant
    Filed: February 2, 2021
    Date of Patent: July 4, 2023
    Assignee: CHONGQING UNIVERSITY OF POSTS AND TELECOMMUNICATIONS
    Inventors: Guojun Li, Jinghui Li, Changrong Ye, Huan Ma, Guangfa Zheng, Yiping Luo, Zunli Wang
  • Publication number: 20230208443
    Abstract: A low-complexity selective mapping method using cyclic redundancy check is provided. In performing coding, a transmitter adds a check bit to information bits to be transmitted to obtain modulated data. Demodulation is performed on an M-order modulation symbol received by a receiver to obtain a decoding result of a coding polynomial of the modulation symbol and bit information received by the receiver. A modulo-2 division result of the decoding result of the coding polynomial and a generation polynomial is calculated. In a case that a remainder of the modulo-2 division result is equal to zero, if the modulated data corresponding to the same index value of the receiver and the transmitter are identical, a current iteration is stopped, and a current value is outputted as a phase rotation sequence index recovery value. Finally, the receiver obtains a decoded signal.
    Type: Application
    Filed: February 1, 2021
    Publication date: June 29, 2023
    Applicant: CHONGQING UNIVERSITY OF POSTS AND TELECOMMUNICATIONS
    Inventors: Guojun LI, Junbing LI, Congji YIN, Changrong YE
  • Publication number: 20230179456
    Abstract: The present invention relates to the field of digital signal processing, and in particular to a Costas sequence time-frequency joint synchronization method based on all-phase spectrum correction. The method improves the defects existing in a discrete frequency spectrum correction algorithm using short-time Fourier transform and sliding correlation. The improvement mainly comprises: the present disclosure provides a solution based on iterative optimization: when an actual frequency offset is an integral multiple of the spectral resolution, a large error can occur, frequency offset correction and time delay correction are carried out on a signal by using an estimated value having a large estimated error, then estimation is carried out again, and the frequency offset of the signal is not a special value by means of an iteration mode.
    Type: Application
    Filed: February 2, 2021
    Publication date: June 8, 2023
    Applicant: CHONGQING UNIVERSITY OF POSTS AND TELECOMMUNICATIONS
    Inventors: Guojun LI, Jinghui LI, Changrong YE, Huan MA, Guangfa ZHENG, Yiping LUO, Zunli WANG