公开(公告)号：US09270360B2

公开(公告)日：2016-02-23

申请号：US13660473

申请日：2012-10-25

Applicant: Electronics and Telecommunications Research Institute

Inventor： Soon-Young Eom ,  Kwang-Jae Lee ,  Jae-Ick Choi

IPC: H01Q21/24 ,  H04B7/10 ,  H04B7/06 ,  H01Q21/06

CPC classification number: H04B7/10 ,  H01Q21/24 ,  H01Q21/245 ,  H04B7/0615

Abstract: Disclosed are signal transmitting apparatus and method capable of generating polarizations that can be controlled in real time by allocating weights to signals. A signal transmitting method for generating variable polarizations having any vector through a plurality of radiating elements vertical to each other includes: receiving an input signal and separating the input signal into a plurality of separated signals according to the number of radiating elements; and allocating weights for controlling vectors of the variable polarizations to each of the plurality of separated signals, wherein the vectors of the variable polarizations are represented by a vector sum of the plurality of separated signals allocated with weights.

Abstract translation: 公开了能够产生可以通过向信号分配权重实时控制的偏振的信号发送装置和方法。 一种用于生成具有彼此垂直的多个辐射元件的任意矢量的可变偏振的信号发送方法包括：接收输入信号，并根据辐射元件的数量将输入信号分离成多个分离的信号; 以及将用于控制所述可变偏振矢量的权重分配给所述多个分离信号中的每一个，其中所述可变偏振的向量由分配有权重的所述多个分离信号的向量和表示。

公开(公告)号：US09467320B2

公开(公告)日：2016-10-11

申请号：US14450757

申请日：2014-08-04

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jung-Sun Um ,  Sung-Hyun Hwang ,  Sung-Jin Yoo ,  Byung-Jang Jeong ,  Jae-Ick Choi

IPC: H04J3/00 ,  H04L27/26

CPC classification number: H04L27/2663 ,  H04L27/2646 ,  H04L27/2656 ,  H04L27/266 ,  H04W48/16

Abstract: Disclosed herein are a method and a system for performing initial ranging in a cognitive radio network The method for performing initial ranging in a cognitive radio network includes: detecting signals received in one or more ranging sections; estimating a tint time offset based on a correlation between subcarrier indices of the signals detected in the one or more ranging sections; estimating a second time offset based on correlations for the signals detected in the one or more ranging sections and a plurality of codes that are predetermined and detecting an initial ranging code among the plurality of codes; and estimating a time offset of a CPE performing initial ranging with the detected initial ranging code using the first time offset and the second time offset that are estimated.

Abstract translation: 这里公开了一种用于在认知无线电网络中执行初始测距的方法和系统。用于在认知无线电网络中执行初始测距的方法包括：检测在一个或多个测距部分中接收的信号; 基于在所述一个或多个测距段中检测到的信号的子载波索引之间的相关性来估计色调时间偏移; 基于在所述一个或多个测距段中检测到的信号的相关性和预定的多个代码并检测所述多个代码中的初始测距码来估计第二时间偏移; 以及使用所估计的所述第一时间偏移和所述第二时间偏移来估计执行初始测距的CPE与所检测的初始测距码的时间偏移。