公开(公告)号：US20180091343A1

公开(公告)日：2018-03-29

申请号：US15563574

申请日：2015-03-31

Applicant: CHONGQING UNIVERSITY OF POSTS AND TELECOMMUNICATIONS

Inventor： Guangyu WANG ,  Qianbin CHEN ,  Kai SHAO ,  Ling ZHUANG

IPC: H04L27/26 ,  H04L25/03 ,  H04L5/00

CPC classification number: H04L27/263 ,  H04L1/00 ,  H04L5/0007 ,  H04L25/03 ,  H04L25/03006 ,  H04L27/2636 ,  H04L27/264 ,  H04L27/265 ,  H04L2025/03401 ,  H04L2025/03414 ,  H04L2025/0342

Abstract: The present disclosure provides a multi-carrier time-division multiplexing (MC-TDMA) modulation and demodulation method and system. Before multi-carrier modulation is performed on an input symbol, an interleaving allocation and an FFT may be performed, a time domain symbol may be transformed into a frequency domain symbol signal to perform a MDFT treatment. A sending end may adopt an analyzing filter bank structure, and pre-filtering and an IFFT may be performed on a signal successively. A pre-filter may be positioned between an NM point FFT and an M point IFFT, a PAPR value of the system may be reduced using the symmetry of a coefficient of a filter, and a frequency domain symbol signal may be allocated to different sub-bands for multi-carrier modulation.

公开(公告)号：US20210051050A1

公开(公告)日：2021-02-18

申请号：US17086486

申请日：2020-11-02

Applicant: CHONGQING UNIVERSITY OF POSTS AND TELECOMMUNICATIONS

Inventor： Guangyu WANG ,  Qianbin CHEN ,  Kai SHAO ,  Ling ZHUANG

IPC: H04L27/26 ,  H04L1/00 ,  H04L25/03 ,  H04L5/00

Abstract: The present disclosure provides a multi-carrier time-division multiplexing (MC-TDMA) modulation and demodulation method and system. Before multi-carrier modulation is performed on an input symbol, an interleaving allocation and an FFT may be performed, a time domain symbol may be transformed into a frequency domain symbol signal to perform a MDFT treatment. A sending end may adopt an analyzing filter bank structure, and pre-filtering and an IFFT may be performed on a signal successively. A pre-filter may be positioned between an NM point FFT and an M point IFFT, a PAPR value of the system may be reduced using the symmetry of a coefficient of a filter, and a frequency domain symbol signal may be allocated to different sub-bands for multi-carrier modulation.

公开(公告)号：US20200084078A1

公开(公告)日：2020-03-12

申请号：US16683411

申请日：2019-11-14

Applicant: CHONGQING UNIVERSITY OF POSTS AND TELECOMMUNICATIONS

Inventor： Guangyu WANG ,  Qianbin CHEN ,  Kai SHAO ,  Ling ZHUANG

IPC: H04L27/26 ,  H04L25/03 ,  H04L5/00 ,  H04L1/00

Abstract: The present disclosure provides a multi-carrier time-division multiplexing (MC-TDMA) modulation and demodulation method and system. Before multi-carrier modulation is performed on an input symbol, an interleaving allocation and an FFT may be performed, a time domain symbol may be transformed into a frequency domain symbol signal to perform a MDFT treatment. A sending end may adopt an analyzing filter bank structure, and pre-filtering and an IFFT may be performed on a signal successively. A pre-filter may be positioned between an NM point FFT and an M point IFFT, a PAPR value of the system may be reduced using the symmetry of a coefficient of a filter, and a frequency domain symbol signal may be allocated to different sub-bands for multi-carrier modulation.