Patents by Inventor Yanbo Cao

Yanbo Cao 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).

  • Method, apparatus and system for coding and decoding of LDPC codes
    Patent number: 8418015
    Abstract: The present invention discloses a method, an apparatus and a system for low-density parity-check (LDPC) coding and decoding. The coding method includes the following steps: constructing each layer of a check matrix of a layered LDPC code used as an error correcting code; when data is initially sent by a data transmitting terminal, performing first-layer-coding of the data to be sent by using the first layer of a check matrix of the LDPC code, sending the first-layer-coded data; when data for (n?1)th retransmission is sent by the data transmitting terminal, performing nth-layer-coding of the data by using the nth layer of a check matrix of the LDPC code, sending the nth-layer-coded data, wherein n is an integer no less than 2. It is possible to reduce the system overhead, decrease the decoding delay, and improve the decoding performance by using the technical solution of the present invention which is also adapted to high-speed data services.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: April 9, 2013
    Assignee: China Academy of Telecommunications Technology
    Inventors: Yanbo Cao, Hongqiang Li, Lu An, Yuanxin Qiao, Jianxun Sun, Yuxin Dong
  • METHOD, APPARATUS AND SYSTEM FOR CODING AND DECODING OF LDPC CODES
    Publication number: 20100211841
    Abstract: The present invention discloses a method, an apparatus and a system for low-density parity-check (LDPC) coding and decoding. The coding method includes the following steps: constructing each layer of a check matrix of a layered LDPC code used as an error correcting code; when data is initially sent by a data transmitting terminal, performing first-layer-coding of the data to be sent by using the first layer of a check matrix of the LDPC code, sending the first-layer-coded data; when data for (n?1)th retransmission is sent by the data transmitting terminal, performing nth-layer-coding of the data by using the nth layer of a check matrix of the LDPC code, sending the nth-layer-coded data, wherein n is an integer no less than 2. It is possible to reduce the system overhead, decrease the decoding delay, and improve the decoding performance by using the technical solution of the present invention which is also adapted to high-speed data services.
    Type: Application
    Filed: June 6, 2008
    Publication date: August 19, 2010
    Applicant: DA TANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.
    Inventors: Yanbo Cao, Hongqiang Li, Lu An, Yuanxin Qiao, Jianxun Sun, Yuxin Dong