公开(公告)号：US20230385371A1

公开(公告)日：2023-11-30

申请号：US18142568

申请日：2023-05-02

申请人： MEDIATEK INC.

发明人： Kun-Tso Chen

IPC分类号： G06F17/15 ,  G01S19/30

CPC分类号： G06F17/15 ,  G01S19/30

摘要： A correlation computation method includes: obtaining a plurality of code sequences; performing, by a transformation circuit, a bit-wise combination with transformation upon the plurality of code sequences to generate a composite code sequence; and generating a correlation value between a data sequence and the composite code sequence.

公开(公告)号：US20240039772A1

公开(公告)日：2024-02-01

申请号：US18210644

申请日：2023-06-15

申请人： MEDIATEK INC.

发明人： Kun-Tso Chen

IPC分类号： H04L27/227 ,  H04L27/20

CPC分类号： H04L27/2277 ,  H04L27/2082

摘要： A correlation computation method includes: performing, by a grouping circuit, a grouping operation upon a data sequence according to an in-phase code sequence and a quadrature code sequence, wherein the data sequence is derived from a quadrature phase shift keying (QPSK) modulated signal; performing at least one accumulation operation upon data samples categorized into at least one data sample group by the grouping operation, to generate at least one accumulation result; and deriving a correlation value between the data sequence and both of the in-phase code sequence and the quadrature code sequence from the at least one accumulation result.

公开(公告)号：US20220260728A1

公开(公告)日：2022-08-18

申请号：US17670538

申请日：2022-02-14

申请人： MEDIATEK INC.

发明人： Kun-Tso Chen

IPC分类号： G01S19/42 ,  G01S19/44 ,  G01S19/39

摘要： The present invention provides a receiver including an RF circuit, a correlator and a signal delay estimator. The RF circuit is configured to receive a first satellite signal and a second satellite signal to generate a first base-band signal and a second base-band signal, respectively. The correlator is configured to use a first local signal to integrate with the first base-band signal to generate a first correlation result, and to use a second local signal to integrate with the second base-band signal to generate a second correlation result. The signal delay estimator is coupled to the correlator, and is configured to use the second correlation result to compensate the first correlation result to generate a compensated first correlation result, and determine a signal delay of the first satellite signal according to the compensated first correlation result.

公开(公告)号：US11940542B2

公开(公告)日：2024-03-26

申请号：US17670538

申请日：2022-02-14

申请人： MEDIATEK INC.

发明人： Kun-Tso Chen

IPC分类号： G01S19/39 ,  G01S19/22 ,  G01S19/32

CPC分类号： G01S19/22 ,  G01S19/32 ,  G01S19/393

摘要： The present invention provides a receiver including an RF circuit, a correlator and a signal delay estimator. The RF circuit is configured to receive a first satellite signal and a second satellite signal to generate a first base-band signal and a second base-band signal, respectively. The correlator is configured to use a first local signal to integrate with the first base-band signal to generate a first correlation result, and to use a second local signal to integrate with the second base-band signal to generate a second correlation result. The signal delay estimator is coupled to the correlator, and is configured to use the second correlation result to compensate the first correlation result to generate a compensated first correlation result, and determine a signal delay of the first satellite signal according to the compensated first correlation result.

公开(公告)号：US20230359693A1

公开(公告)日：2023-11-09

申请号：US18139954

申请日：2023-04-27

申请人： MEDIATEK INC.

发明人： Kun-Tso Chen

IPC分类号： G06F17/15

CPC分类号： G06F17/15

摘要： A correlation computation method includes: obtaining a first sum of all data samples included in a data sequence; obtaining a second sum of selected data samples that are selected from the data sequence according to code bits included in a first code sequence; and deriving, by a processing circuit, a first correlation value between the data sequence and the first code sequence from the first sum and the second sum.