Patents by Inventor Xufeng GUO

Xufeng GUO 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).

  • Preamble symbol receiving method and device
    Patent number: 11799706
    Abstract: Provided are a preamble symbol receiving method and device, characterizing in that the method comprises the following steps: processing a received signal; judging whether the processed signal obtained contains the preamble symbol desired to be received; and if a judgement result is yes, determining the position of the preamble symbol and resolving signalling information carried by the preamble symbol, wherein the received preamble symbol comprises at least one time-domain symbol generated by a transmitting end using a free combination of any number of first three-segment structures and/or second three-segment structures according to a predefined generation rule, the first three-segment structure containing: a time-domain main body signal, a prefix generated based on the entirety or a portion of the time-domain main body signal, and a postfix generated based on the entirety or a portion of a partial time-domain main body signal, and the second three segment structure containing: the time domain main body signa
    Type: Grant
    Filed: June 17, 2021
    Date of Patent: October 24, 2023
    Assignee: Shanghai National Engineering Research Center of Digital Television Co., Ltd.
    Inventors: Ge Huang, Hongliang Xu, Guanbin Xing, Wenjun Zhang, Xufeng Guo
  • Interleaving and mapping method and deinterleaving and demapping method for LDPC codeword
    Patent number: 11296728
    Abstract: An interleaving and mapping method and a deinterleaving and demapping method for an LDPC codeword are provided. The interleaving and mapping method comprises: performing first bit interleaving on a parity bits part of the LDPC codeword to obtain interleaved parity bits; splicing an information bit part of the codeword and the interleaved parity bits into a codeword after the first bit interleaving; dividing the codeword after the first bit interleaving into multiple consecutive bit subblocks in a predetermined length, and changing the order of the bit subblocks according to a corresponding permutation order (bit-swapping pattern) to form a codeword after second bit interleaving; dividing the codeword after the second bit interleaving into two parts, and writing the two parts into storage space in a column order respectively and reading the two parts from the storage space in a row order respectively to obtain a codeword after third bit interleaving.
    Type: Grant
    Filed: September 27, 2020
    Date of Patent: April 5, 2022
    Assignee: Shanghai National Engineering Research Center of Digital Teievision Co., Ltd.
    Inventors: Wenjun Zhang, Yijun Shi, Dazhi He, Yunfeng Guan, Yin Xu, Xufeng Guo
  • PREAMBLE SYMBOL RECEIVING METHOD AND DEVICE
    Publication number: 20210392596
    Abstract: Provided are a preamble symbol receiving method and device, characterizing in that the method comprises the following steps: processing a received signal; judging whether the processed signal obtained contains the preamble symbol desired to be received; and if a judgement result is yes, determining the position of the preamble symbol and resolving signalling information carried by the preamble symbol, wherein the received preamble symbol comprises at least one time-domain symbol generated by a transmitting end using a free combination of any number of first three-segment structures and/or second three-segment structures according to a predefined generation rule, the first three-segment structure containing: a time-domain main body signal, a prefix generated based on the entirety or a portion of the time-domain main body signal, and a postfix generated based on the entirety or a portion of a partial time-domain main body signal, and the second three-segment structure containing: the time-domain main body signa
    Type: Application
    Filed: June 17, 2021
    Publication date: December 16, 2021
    Applicant: Shanghai National Engineering Research Center of Digital Television Co.,Ltd.
    Inventors: Ge Huang, Hongliang Xu, Guanbin Xing, Wenjun Zhang, Xufeng Guo
  • Preamble symbol generation and receiving method, and frequency-domain symbol generation method and device
    Patent number: 11128504
    Abstract: Provided are a preamble symbol generation method and receiving method, and a relevant frequency-domain symbol generation method and relevant device. The generated preamble symbol contains: a time-domain symbol with a first three-segment structure; or a time-domain symbol with a second three-segment structure; or a free combination of several time-domain symbols with the first three-segment structure and/or several time-domain symbols with the second three-segment structure arranged in any order.
    Type: Grant
    Filed: August 12, 2020
    Date of Patent: September 21, 2021
    Inventors: Wenjun Zhang, Ge Huang, Guanbin Xing, Hongliang Xu, Xufeng Guo, Yunfeng Guan, Dazhi He
  • Preamble symbol generation and receiving method, and frequency-domain symbol generation method and device
    Patent number: 11088884
    Abstract: Provided are a preamble symbol generation method and receiving method, and a relevant frequency-domain symbol generation method and relevant device. The generated preamble symbol contains: a time-domain symbol with a first three-segment structure; or a time-domain symbol with a second three-segment structure; or a free combination of several time-domain symbols with the first three-segment structure and/or several time-domain symbols with the second three-segment structure arranged in any order.
    Type: Grant
    Filed: August 12, 2020
    Date of Patent: August 10, 2021
    Inventors: Wenjun Zhang, Ge Huang, Guanbin Xing, Hongliang Xu, Xufeng Guo, Yunfeng Guan, Dazhi He
  • Preamble symbol generation and receiving method, and frequency-domain symbol generation method and device
    Patent number: 11088885
    Abstract: Provided are a preamble symbol generation method and receiving method, and a relevant frequency-domain symbol generation method and relevant device. The generated preamble symbol contains: a time-domain symbol with a first three-segment structure; or a time-domain symbol with a second three-segment structure; or a free combination of several time-domain symbols with the first three-segment structure and/or several time-domain symbols with the second three-segment structure arranged in any order.
    Type: Grant
    Filed: August 12, 2020
    Date of Patent: August 10, 2021
    Inventors: Wenjun Zhang, Ge Huang, Guanbin Xing, Hongliang Xu, Xufeng Guo, Yunfeng Guan, Dazhi He
  • Preamble symbol generation and receiving method, and frequency-domain symbol generation method and device
    Patent number: 11082274
    Abstract: Provided are a preamble symbol generation method and receiving method, and a relevant frequency-domain symbol generation method and relevant device. The generated preamble symbol contains: a time-domain symbol with a first three-segment structure; or a time-domain symbol with a second three-segment structure; or a free combination of several time-domain symbols with the first three-segment structure and/or several time-domain symbols with the second three-segment structure arranged in any order.
    Type: Grant
    Filed: August 12, 2020
    Date of Patent: August 3, 2021
    Inventors: Wenjun Zhang, Ge Huang, Guanbin Xing, Hongliang Xu, Xufeng Guo, Yunfeng Guan, Dazhi He
  • Preamble symbol receiving method and device
    Patent number: 11071072
    Abstract: A preamble symbol receiving method includes, receiving a signal, processing the received signal, determining whether the processed signal contains the preamble symbol, in response to determining that the processed signal contains the preamble symbol, determining the position of the preamble symbol and resolving signaling information carried by the preamble symbol. The preamble symbol includes at least one time-domain symbol generated using a free combination of any number of first three-segment structures and second three-segment structures according to a predefined generation rule.
    Type: Grant
    Filed: April 16, 2015
    Date of Patent: July 20, 2021
    Inventors: Ge Huang, Hongliang Xu, Guanbin Xing, Wenjun Zhang, Xufeng Guo
  • INTERLEAVING AND MAPPING METHOD AND DEINTERLEAVING AND DEMAPPING METHOD FOR LDPC CODEWORD
    Publication number: 20210013904
    Abstract: An interleaving and mapping method and a deinterleaving and demapping method for an LDPC codeword are provided. The interleaving and mapping method comprises: performing first bit interleaving on a parity bits part of the LDPC codeword to obtain interleaved parity bits; splicing an information bit part of the codeword and the interleaved parity bits into a codeword after the first bit interleaving; dividing the codeword after the first bit interleaving into multiple consecutive bit subblocks in a predetermined length, and changing the order of the bit subblocks according to a corresponding permutation order (bit-swapping pattern) to form a codeword after second bit interleaving; dividing the codeword after the second bit interleaving into two parts, and writing the two parts into storage space in a column order respectively and reading the two parts from the storage space in a row order respectively to obtain a codeword after third bit interleaving.
    Type: Application
    Filed: September 27, 2020
    Publication date: January 14, 2021
    Inventors: Wenjun ZHANG, Yijun SHI, Dazhi HE, Yunfeng GUAN, Yin XU, Xufeng GUO
  • PREAMBLE SYMBOL GENERATION AND RECEIVING METHOD, AND FREQUENCY-DOMAIN SYMBOL GENERATION METHOD AND DEVICE
    Publication number: 20200374168
    Abstract: Provided are a preamble symbol generation method and receiving method, and a relevant frequency-domain symbol generation method and relevant device. The generated preamble symbol contains: a time-domain symbol with a first three-segment structure; or a time-domain symbol with a second three-segment structure; or a free combination of several time-domain symbols with the first three-segment structure and/or several time-domain symbols with the second three-segment structure arranged in any order.
    Type: Application
    Filed: August 12, 2020
    Publication date: November 26, 2020
    Inventors: Wenjun ZHANG, Ge Huang, Guanbin Xing, Hongliang Xu, Xufeng Guo, Yunfeng Guan, Dazhi He
  • PREAMBLE SYMBOL GENERATION AND RECEIVING METHOD, AND FREQUENCY-DOMAIN SYMBOL GENERATION METHOD AND DEVICE
    Publication number: 20200374169
    Abstract: Provided are a preamble symbol generation method and receiving method, and a relevant frequency-domain symbol generation method and relevant device. The generated preamble symbol contains: a time-domain symbol with a first three-segment structure; or a time-domain symbol with a second three-segment structure; or a free combination of several time-domain symbols with the first three-segment structure and/or several time-domain symbols with the second three-segment structure arranged in any order.
    Type: Application
    Filed: August 12, 2020
    Publication date: November 26, 2020
    Inventors: Wenjun ZHANG, Ge Huang, Guanbin Xing, Hongliang Xu, Xufeng Guo, Yunfeng Guan, Dazhi He
  • PREAMBLE SYMBOL GENERATION AND RECEIVING METHOD, AND FREQUENCY-DOMAIN SYMBOL GENERATION METHOD AND DEVICE
    Publication number: 20200374166
    Abstract: Provided are a preamble symbol generation method and receiving method, and a relevant frequency-domain symbol generation method and relevant device. The generated preamble symbol contains: a time-domain symbol with a first three-segment structure; or a time-domain symbol with a second three-segment structure; or a free combination of several time-domain symbols with the first three-segment structure and/or several time-domain symbols with the second three-segment structure arranged in any order.
    Type: Application
    Filed: August 12, 2020
    Publication date: November 26, 2020
    Inventors: Wenjun Zhang, Ge Huang, Guanbin Xing, Hongliang Xu, Xufeng Guo, Yunfeng Guan, Dazhi He
  • PREAMBLE SYMBOL GENERATION AND RECEIVING METHOD, AND FREQUENCY-DOMAIN SYMBOL GENERATION METHOD AND DEVICE
    Publication number: 20200374167
    Abstract: Provided are a preamble symbol generation method and receiving method, and a relevant frequency-domain symbol generation method and relevant device. The generated preamble symbol contains: a time-domain symbol with a first three-segment structure; or a time-domain symbol with a second three-segment structure; or a free combination of several time-domain symbols with the first three-segment structure and/or several time-domain symbols with the second three-segment structure arranged in any order.
    Type: Application
    Filed: August 12, 2020
    Publication date: November 26, 2020
    Inventors: Wenjun Zhang, Ge Huang, Guanbin Xing, Hongliang Xu, Xufeng Guo, Yunfeng Guan, Dazhi He
  • Interleaving and mapping method and deinterleaving and demapping method for LDPC codeword
    Patent number: 10833709
    Abstract: An interleaving and mapping method and a deinterleaving and demapping method for an LDPC codeword are provided. The interleaving and mapping method comprises: performing first bit interleaving on a parity bits part of the LDPC codeword to obtain interleaved parity bits; splicing an information bit part of the codeword and the interleaved parity bits into a codeword after the first bit interleaving; dividing the codeword after the first bit interleaving into multiple consecutive bit subblocks in a predetermined length, and changing the order of the bit subblocks according to a corresponding permutation order (bit-swapping pattern) to form a codeword after second bit interleaving; dividing the codeword after the second bit interleaving into two parts, and writing the two parts into storage space in a column order respectively and reading the two parts from the storage space in a row order respectively to obtain a codeword after third bit interleaving.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: November 10, 2020
    Inventors: Wenjun Zhang, Yijun Shi, Dazhi He, Yunfeng Guan, Yin Xu, Xufeng Guo
  • Preamble symbol transmitting method and device, and preamble symbol receiving method and device
    Patent number: 10778484
    Abstract: Provided are a preamble symbol generation method and receiving method, and a relevant frequency-domain symbol generation method and relevant device. The generated preamble symbol contains: a time-domain symbol with a first three-segment structure; or a time-domain symbol with a second three-segment structure; or a free combination of several time-domain symbols with the first three-segment structure and/or several time-domain symbols with the second three-segment structure arranged in any order.
    Type: Grant
    Filed: April 16, 2015
    Date of Patent: September 15, 2020
    Assignee: Shanghai National Engineering Research Center of Digital Television Co., Ltd.
    Inventors: Wenjun Zhang, Ge Huang, Guanbin Xing, Hongliang Xu, Xufeng Guo, Yunfeng Guan, Dazhi He
  • Interleaving and mapping method and deinterleaving and demapping method for LDPC codeword
    Patent number: 10374635
    Abstract: An interleaving and mapping method and a deinterleaving and demapping method for an LDPC codeword are provided. The interleaving and mapping method comprises: performing first bit interleaving on a parity bits part of the LDPC codeword to obtain interleaved parity bits; splicing an information bit part of the codeword and the interleaved parity bits into a codeword after the first bit interleaving; dividing the codeword after the first bit interleaving into multiple consecutive bit subblocks in a predetermined length, and changing the order of the bit subblocks according to a corresponding permutation order (bit-swapping pattern) to form a codeword after second bit interleaving; dividing the codeword after the second bit interleaving into two parts, and writing the two parts into storage space in a column order respectively and reading the two parts from the storage space in a row order respectively to obtain a codeword after third bit interleaving.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: August 6, 2019
    Assignee: Shanghai National Engineering Research Center of Digital Television Co., Ltd.
    Inventors: Wenjun Zhang, Yijun Shi, Dazhi He, Yunfeng Guan, Yin Xu, Xufeng Guo
  • INTERLEAVING AND MAPPING METHOD AND DEINTERLEAVING AND DEMAPPING METHOD FOR LDPC CODEWORD
    Publication number: 20190007066
    Abstract: An interleaving and mapping method and a deinterleaving and demapping method for an LDPC codeword are provided. The interleaving and mapping method comprises: performing first bit interleaving on a parity bits part of the LDPC codeword to obtain interleaved parity bits; splicing an information bit part of the codeword and the interleaved parity bits into a codeword after the first bit interleaving; dividing the codeword after the first bit interleaving into multiple consecutive bit subblocks in a predetermined length, and changing the order of the bit subblocks according to a corresponding permutation order (bit-swapping pattern) to form a codeword after second bit interleaving; dividing the codeword after the second bit interleaving into two parts, and writing the two parts into storage space in a column order respectively and reading the two parts from the storage space in a row order respectively to obtain a codeword after third bit interleaving.
    Type: Application
    Filed: September 6, 2018
    Publication date: January 3, 2019
    Inventors: Wenjun ZHANG, Yijun SHI, Dazhi HE, Yunfeng GUAN, Yin XU, Xufeng GUO
  • INTERLEAVING AND MAPPING METHOD AND DEINTERLEAVING AND DEMAPPING METHOD FOR LDPC CODEWORD
    Publication number: 20190007067
    Abstract: An interleaving and mapping method and a deinterleaving and demapping method for an LDPC codeword are provided. The interleaving and mapping method comprises: performing first bit interleaving on a parity bits part of the LDPC codeword to obtain interleaved parity bits; splicing an information bit part of the codeword and the interleaved parity bits into a codeword after the first bit interleaving; dividing the codeword after the first bit interleaving into multiple consecutive bit subblocks in a predetermined length, and changing the order of the bit subblocks according to a corresponding permutation order (bit-swapping pattern) to form a codeword after second bit interleaving; dividing the codeword after the second bit interleaving into two parts, and writing the two parts into storage space in a column order respectively and reading the two parts from the storage space in a row order respectively to obtain a codeword after third bit interleaving.
    Type: Application
    Filed: September 6, 2018
    Publication date: January 3, 2019
    Inventors: Wenjun Zhang, Yijun Shi, Dazhi He, Yunfeng Guan, Yin Xu, Xufeng Guo
  • Interleaving and mapping method and deinterleaving and demapping method for LDPC codeword
    Patent number: 10097209
    Abstract: An interleaving and mapping method and a deinterleaving and demapping method for an LDPC codeword are provided.
    Type: Grant
    Filed: August 19, 2016
    Date of Patent: October 9, 2018
    Assignee: Shanghai National Engineering Research Center of Digital Television Co., Ltd.
    Inventors: Wenjun Zhang, Yijun Shi, Dazhi He, Yunfeng Guan, Yin Xu, Xufeng Guo
  • PREAMBLE SYMBOL RECEIVING METHOD AND DEVICE
    Publication number: 20170245231
    Abstract: Provided are a preamble symbol receiving method and device, characterizing in that the method comprises the following steps: processing a received signal; judging whether the processed signal obtained contains the preamble symbol desired to be received; and if a judgement result is yes, determining the position of the preamble symbol and resolving signalling information carried by the preamble symbol, wherein the received preamble symbol comprises at least one time-domain symbol generated by a transmitting end using a free combination of any number of first three-segment structures and/or second three-segment structures according to a predefined generation rule, the first three-segment structure containing: a time-domain main body signal, a prefix generated based on the entirety or a portion of the time-domain main body signal, and a postfix generated based on the entirety or a portion of a partial time-domain main body signal, and the second three-segment structure containing: the time-domain main body signa
    Type: Application
    Filed: April 16, 2015
    Publication date: August 24, 2017
    Inventors: Ge Huang, Hongliang Xu, Guanbin Xing, Wenjun Zhang, Xufeng Guo