公开(公告)号：US20150017932A1

公开(公告)日：2015-01-15

申请号：US14150084

申请日：2014-01-08

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Seunghyun JANG ,  Sung Jun LEE ,  Young Kyun CHO ,  Bong Hyuk PARK ,  JAE HO JUNG ,  Kwangchun LEE

IPC: H04W52/04 ,  H04W52/24

CPC classification number: H04W52/04 ,  H04W52/241 ,  H04W52/52

Abstract: A signal amplification apparatus includes a first modulator configured to receive an envelope signal, use a predetermined reference level to separate the received envelope signal into a first period and a second period, digitally modulate a signal of the second period to output the digitally modulated signal to a first output terminal, and output a signal of the first period to a second output terminal. Further, the signal amplification apparatus includes a second modulator configured to mix the digital modulated signal input through the first output terminal with a phase modulated carrier signal; an envelope modulator configured to output the signal of the first period as a power supply signal; and a power amplifier configured to amplify the mixed signal output by the second modulator to output the amplified signal.

Abstract translation: 信号放大装置包括：第一调制器，被配置为接收包络信号，使用预定的参考电平将接收的包络信号分离成第一周期和第二周期，数字地调制第二周期的信号以输出数字调制信号 第一输出端，​​并将第一周期的信号输出到第二输出端。 此外，信号放大装置包括：第二调制器，被配置为将通过第一输出端子输入的数字调制信号与相位调制载波信号混合; 包络调制器，被配置为输出所述第一周期的信号作为电源信号; 以及功率放大器，被配置为放大由第二调制器输出的混合信号以输出放大的信号。

公开(公告)号：US20210153200A1

公开(公告)日：2021-05-20

申请号：US17082429

申请日：2020-10-28

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Heon Kook KWON ,  Kwang Seon KIM ,  Jung Nam LEE ,  JAE HO JUNG ,  Young Kyun CHO

IPC: H04W72/04 ,  H04L27/26

Abstract: A communication method and apparatuses performing the same. The communication method includes arranging first subcarriers of a first frequency domain and second subcarriers of a second frequency domain based on a mirror point and performing communication based on an orthogonal frequency-division multiplexing (OFDM) communication scheme using at least one of the first subcarriers and the second subcarriers.

公开(公告)号：US20150200678A1

公开(公告)日：2015-07-16

申请号：US14308752

申请日：2014-06-19

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Young Kyun CHO ,  JAE HO JUNG ,  Kwangchun LEE

IPC: H03M1/00 ,  H03M3/00

CPC classification number: H03M3/448 ,  H03M1/00 ,  H03M1/12 ,  H03M3/30

Abstract: Provided is a delta-sigma modulator including a summer summing an input signal and an analog signal, a first integrator integrating an output signal from the summer and outputting a first integration signal, a second integrator integrating the first integration signal and outputting a second integration signal, a comparator comparing the second integration signal and a reference signal and outputting a digital signal according to the comparison result, and a digital-to-analog converter converting the digital signal into an analog signal in response to a clock signal and outputting the converted analog signal, wherein the second integrator operates based on an Nth order (where N is natural number of 1 or greater) transfer function.

Abstract translation: 提供了一种Δ-Σ调制器，其包括对输入信号和模拟信号进行加法求和，第一积分器，对来自加法器的输出信号进行积分并输出第一积分信号;第二积分器，积分第一积分信号并输出​​第二积分信号 比较比较第二积分信号和参考信号的比较器，并根据比较结果输出数字信号;以及数模转换器，响应于时钟信号将数字信号转换为模拟信号，并输出转换的模拟 信号，其中所述第二积分器基于N阶（其中N是1或更大的自然数）传递函数来操作。

公开(公告)号：US20150078500A1

公开(公告)日：2015-03-19

申请号：US14294836

申请日：2014-06-03

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung Jun LEE ,  Young Kyun CHO ,  Seunghyun JANG ,  Bong Hyuk PARK ,  JAE HO JUNG ,  Kwangchun LEE

IPC: H04L7/00

CPC classification number: H04L7/0016 ,  H04L27/366 ,  H04L27/02 ,  H04L27/361

Abstract: Provided is a method of correcting a time misalignment between envelope and phase components in a transmitting apparatus which separates envelope and phase components of a signal, processes them, and then recombines them to transmit the recombined signal. For this, in a method of correcting a time misalignment between envelope and phase components according to an embodiment of the present invention, a time misalignment is corrected by applying a time delay to at least one of envelope and phase components in digital and analog signal processing operations, or applying a time delay to an envelope or phase component by a pre-processing operation.

Abstract translation: 提供了一种校正发送装置中的包络和相位分量之间的时间偏移的方法，该发送装置分离信号的包络和相位分量，处理它们，然后将它们复合以发送重组信号。 为此，在根据本发明的实施例的校正包络和相位分量之间的时间失准的方法中，通过对数字和模拟信号处理中的包络和相位分量中的至少一个应用时间延迟来校正时间偏移 操作或通过预处理操作对信封或相位分量施加时间延迟。

公开(公告)号：US20150215147A1

公开(公告)日：2015-07-30

申请号：US14595653

申请日：2015-01-13

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seunghyun JANG ,  Young Kyun CHO ,  Sung Jun LEE ,  Bong Hyuk PARK ,  JAE HO JUNG ,  Kwangchun LEE

IPC: H04L27/26 ,  H04L27/20

CPC classification number: H04L27/2627 ,  H03F1/3247 ,  H03F3/24 ,  H04L25/4902 ,  H04L25/4923 ,  H04L27/20 ,  H04L27/368

Abstract: Provided is a signal transmission device including a first modulation unit generating a first modulated signal having at least three logic levels by modulating an input signal; a characteristic adjustment unit generating an adjusted first modulated signal by adjusting the at least one of electrical characteristic values based on an adjustment signal; a second modulation unit generating a second modulated signal by modulating the adjusted first modulated signal; and an adjustment operation unit generating the adjustment signal based on electrical characteristic values respectively corresponding to the at least three logic levels of the first modulated signal and corresponding to at least three logic levels of the second modulated signal. Linearity of the modulated signal generated by the provided signal transmission device is enhanced.

Abstract translation: 提供了一种信号传输设备，包括：第一调制单元，通过调制输入信号产生具有至少三个逻辑电平的第一调制信号; 特征调整单元，通过基于调整信号调整所述电特性值中的至少一个来生成经调整的第一调制信号; 第二调制单元，通过调制经调整的第一调制信号产生第二调制信号; 以及调整操作单元，其基于分别对应于所述第一调制信号的所述至少三个逻辑电平并对应于所述第二调制信号的至少三个逻辑电平的电特性值生成所述调整信号。 由提供的信号传输装置产生的调制信号的线性增强。