公开(公告)号：US20220360295A1

公开(公告)日：2022-11-10

申请号：US17734286

申请日：2022-05-02

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： In Kui CHO ,  Jang Yeol KIM ,  Jung Hoon OH ,  Jae Woo LEE ,  Jae Ho LEE ,  Hyun Joon LEE ,  Sang Won KIM ,  Seong Min KIM ,  Jung Ick MOON ,  Woo Jin BYUN ,  Je Hoon YUN

IPC: H04B5/00

Abstract: An antenna device for magnetic field communication may include: a first coil; a second coil; a third coil; a first capacitor connected to a 1-1 terminal of the first coil; a second capacitor connected to a 2-1 terminal of the second coil; a third capacitor connected to a 3-1 terminal of the third coil; and an input port including a first input terminal connected to a 1-2 terminal of the first coil, a 2-2 terminal of the second coil, and a 3-2 terminal of the third coil, and a second input terminal connected to the first capacitor, the second capacitor, and the third capacitor.

公开(公告)号：US20140200017A1

公开(公告)日：2014-07-17

申请号：US13920504

申请日：2013-06-18

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jung Sun UM ,  Jae Hyun PARK ,  Byung Jang JEONG ,  Sang Won KIM ,  Jin Suk PAK

IPC: H04L5/06

CPC classification number: H04L5/006 ,  H04L5/0023 ,  H04L5/0035 ,  H04L5/0085 ,  H04L27/0006

Abstract: To perform communication in a cognitive radio network, a cognitive radio apparatus according to an exemplary embodiment includes: an estimation module configured to generate a channel estimation signal to be transmitted to a predetermined reception apparatus positioned in a predetermined channel in the case of selecting the predetermined channel from among multiple channels; a communication module configured to transmit the channel estimation signal to the predetermined reception apparatus, and to receive a channel response signal from the predetermined reception apparatus; and a control module configured to control the communication module so that at least one of a communication signal set with respect to the predetermined channel and a variable communication signal obtained by varying the communication signal is transmitted to the predetermined reception apparatus, when it is determined that the predetermined channel is positioned in a deep fading section based on the channel response signal.

Abstract translation: 为了在认知无线电网络中执行通信，根据示例性实施例的认知无线电设备包括：估计模块，被配置为在选择预定的情况下，生成要发送到定位在预定信道中的预定接收设备的信道估计信号 频道来自多个频道; 通信模块，被配置为将所述信道估计信号发送到所述预定接收装置，并从所述预定接收装置接收信道响应信号; 以及控制模块，其被配置为控制所述通信模块，使得相对于所述预定信道设置的通信信号和通过改变所述通信信号获得的可变通信信号中的至少一个被发送到所述预定接收装置，当确定 基于信道响应信号将预定信道定位在深衰落部分中。

公开(公告)号：US20140198836A1

公开(公告)日：2014-07-17

申请号：US13920516

申请日：2013-06-18

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sun Min LIM ,  Hoi Yoon JUNG ,  Sang Won KIM ,  Byung Jang JEONG

IPC: H04B1/10

CPC classification number: H03M7/3062

Abstract: Disclosed is a method for wideband spectrum sensing using compressive sensing, the method including: acquiring a sampling signal by applying a modulated wideband converter (MWC) to a received signal; and acquiring a restoration signal corresponding to the received signal by using a compressive sensing restoration algorithm from the sampling signal, and a mixing signal multiplied by the received signal at the time of applying the MWC, as a signal transformed from a first mixing signal having a periodic waveform, includes a second mixing signal to remove a partial frequency area from the received signal through the application of the MWC.

Abstract translation: 公开了一种使用压缩感测的宽带频谱感测的方法，该方法包括：通过将调制宽带转换器（MWC）应用于接收信号来获取采样信号; 以及通过使用来自采样信号的压缩感测恢复算法和在应用MWC时乘以接收信号的混合信号来获取与接收信号相对应的恢复信号，作为从具有 周期性波形包括通过应用MWC从接收信号中去除部分频率区域的第二混合信号。

公开(公告)号：US20160294589A1

公开(公告)日：2016-10-06

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。

公开(公告)号：US20130223488A1

公开(公告)日：2013-08-29

申请号：US13778572

申请日：2013-02-27

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sang Won KIM ,  Byung Jang JEONG

IPC: H04B1/40

CPC classification number: H04B1/403

Abstract: A wideband transmitting and receiving apparatus including a local oscillator (LO) synthesizer providing a constant output to a wide band is provided. The LO synthesizer may generate LO signals of different amplitudes according to channels. The LO synthesizer may store the amplitudes of the LO signals different according to the channels and compensate the amplitudes of the LO signals using the stored amplitudes. Accordingly, the LO synthesizer may output the LO signals of uniform amplitudes irrespective of the channels.

Abstract translation: 提供一种包括向宽带提供恒定输出的本地振荡器（LO）合成器的宽带发送和接收装置。 LO合成器可以根据信道产生不同幅度的LO信号。 LO合成器可以根据信道存储LO信号的幅度不同，并使用所存储的幅度来补偿LO信号的振幅。 因此，LO合成器可以输出均匀振幅的LO信号，而与通道无关。