公开(公告)号：US09001933B2

公开(公告)日：2015-04-07

申请号：US13945520

申请日：2013-07-18

Applicant: Electronics and Telecommunications Research Institute

Inventor： Mi Kyung Oh ,  Byoung Hak Kim ,  Cheol-ho Shin ,  Jaehwan Kim ,  Sangsung Choi

IPC: H03D3/00 ,  H04L27/14 ,  H04L27/00 ,  H04L27/16

CPC classification number: H04L27/14 ,  H04L27/0014 ,  H04L27/16

Abstract: A receiving apparatus receives an FSK signal, converts the FSK signal into a phasor including amplitude and phase, estimates and compensates for a CFO (carrier frequency offset) from the converted phasor, and recovers a data bit from the converted phasor.

Abstract translation: 接收装置接收FSK信号，将FSK信号转换为包括幅度和相位的相量，估计并补偿来自转换的相量的CFO（载波频率偏移），并从转换的相量中恢复数据位。

公开(公告)号：US09137626B2

公开(公告)日：2015-09-15

申请号：US14286874

申请日：2014-05-23

Applicant: Electronics and Telecommunications Research Institute

Inventor： Mi Kyung Oh ,  Byoung Hak Kim ,  Cheol-ho Shin ,  Jaehwan Kim ,  Sangsung Choi

IPC: H04W4/00 ,  G08C17/02

CPC classification number: H04W4/70 ,  G01D4/002 ,  G08C17/02 ,  H04J3/0608 ,  H04L1/00 ,  H04L1/0041 ,  H04L1/0071 ,  H04L1/02 ,  H04L7/00 ,  H04L27/2078 ,  H04Q2209/43 ,  H04Q2209/60 ,  H04W56/00

Abstract: A transmitting apparatus of a WPAN communication system generates a synchronization header, a physical layer header, and a physical layer service data unit, multiplexes the synchronization header and the physical layer header into a bit stream and then modulates the multiplexed bit stream by a first differential phase modulation scheme, modulates the physical layer service data unit by a second differential phase modulation scheme, and multiplexes and transmits a symbol modulated by the first differential phase modulation scheme and a symbol modulated by the second differential phase modulation scheme into a symbol stream.

Abstract translation: WPAN通信系统的发送装置生成同步报头，物理层报头和物理层服务数据单元，将同步报头和物理层报头复用为比特流，然后通过第一差分 通过第二差分相位调制方式对物理层服务数据单元进行调制，并将由第一差分相位调制方式调制的码元和由第二差分相位调制方式调制的符号复用并发送到符号流。

公开(公告)号：US09537589B2

公开(公告)日：2017-01-03

申请号：US14245550

申请日：2014-04-04

Applicant: Electronics and Telecommunications Research Institute

Inventor： Byoung Hak Kim ,  Jaehwan Kim ,  Mi Kyung Oh ,  Cheol-ho Shin ,  Sangsung Choi

IPC: H04J3/00 ,  H04J3/06 ,  H04L27/26 ,  H04L5/00

CPC classification number: H04J3/0602 ,  H04L5/0048 ,  H04L27/2656 ,  H04L27/2671 ,  H04L27/2675 ,  H04L27/2692

Abstract: A method and apparatus of detecting a frame boundary by using a preamble are provided. The method includes delaying the preamble by a predetermined length of time, wherein the preamble includes an LTF and a code of the (n+1)th one of 2n sync sequences of the LTF is the inverse of a code of the last one of the sync sequences of STF; calculating a correlation value between the preamble and the delayed preamble; and detecting a frame boundary by comparing the correlation value with a threshold correlation value.

Abstract translation: 提供了一种通过使用前置码检测帧边界的方法和装置。 该方法包括将前导延迟预定的时间长度，其中前导码包括LTF，并且LTF的2n个同步序列中的第（n + 1）个第（n + 1）个码的代码是 STF同步序列; 计算所述前同步码和所述延迟前同步码之间的相关值; 以及通过将所述相关值与阈值相关值进行比较来检测帧边界。