公开(公告)号：US09071497B2

公开(公告)日：2015-06-30

申请号：US13834443

申请日：2013-03-15

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Chung Sup Kim ,  Ki Cheol Tae ,  Kanghee Kim ,  Heung Yong Kang ,  Soo-Ho Sohn ,  Yong-Seok Choi ,  Jae Ick Choi

IPC: H04L27/32 ,  H04L27/38

CPC classification number: H04L27/38 ,  H04L27/0012 ,  H04L27/10 ,  H04L27/18

Abstract: An apparatus is used for modulation classification of unknown input signal in a wireless communication system. The apparatus includes a signal classification unit configured to classify the input signal into a PSK signal and an FSK signal and a modulation index decision unit configured to decide a modulation index for the PSK signal and the FSK signal classified by the signal classification unit.

Abstract translation: 一种装置用于无线通信系统中未知输入信号的调制分类。 该装置包括：信号分类单元，被配置为将输入信号分类为PSK信号;以及调制指数决定单元，被配置为决定由信号分类单元分类的PSK信号和FSK信号的调制指数。

公开(公告)号：US10067908B2

公开(公告)日：2018-09-04

申请号：US15595094

申请日：2017-05-15

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Chung Sup Kim ,  Kanghee Kim ,  Sang-Won Kim ,  Ki Cheol Tae ,  Heung Yong Kang ,  Yong-Seok Choi

IPC: G06F17/14 ,  H04L27/26

Abstract: An apparatus for calculating a reception time of a wireless communication signal is disclosed. The apparatus includes a downconverted signal generator configured to generate a downconverted signal, a baseband signal, by downconverting a frequency of a signal received from a transmission source, a modulated signal generator configured to generate a modulated signal by multiplying the downconverted signal by a randomly generated reference signal, a time difference calculator configured to calculate a time difference between the modulated signal and the reference signal by cross-correlating the modulated signal and the reference signal, and a reception time calculator configured to calculate a reception time of the signal received from the transmission source using a point in time at which the reference signal is generated and the time difference between the modulated signal and the reference signal.

公开(公告)号：US09571316B2

公开(公告)日：2017-02-14

申请号：US15007755

申请日：2016-01-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Chung Sup Kim ,  Kang Hee Kim ,  Ki Cheol Tae ,  Sang Won Kim ,  Heung Yong Kang ,  Yong Seok Choi

IPC: H04L27/148

CPC classification number: H04L27/148 ,  H04L27/265

Abstract: Provided herein is a method and apparatus for realizing a frequency-spatial filter with variable bandwidth, the method including generating M number of FFT channel blocks having N number of channels by performing an N point FFT (Fast Fourier Transform) processing using M number of array antenna inputs; combining some of the N number of channels of each FFT channel block according to a frequency bandwidth variable parameter value; combining some of spatial response vector channels in a combined channel of each FFT channel block according to a spatial bandwidth variable parameter value; and combining all the channels and outputting the same.

Abstract translation: 本文提供了一种用于实现具有可变带宽的频率 - 空间滤波器的方法和装置，该方法包括通过使用M个数组阵列执行N点FFT（快速傅里叶变换）处理来产生具有N个信道数的M个FFT信道块 天线输入; 根据频率带宽可变参数值组合每个FFT通道块的N个通道中的一些; 根据空间带宽可变参数值，在每个FFT通道块的组合通道中组合一些空间响应矢量通道; 并组合所有通道并输出相同的通道。