公开(公告)号：AU2002359065A1

公开(公告)日：2004-05-04

申请号：AU2002359065

申请日：2002-12-30

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： JUNG JAE HO ,  LYU DEUK SU ,  OH HYUN SEO

IPC: H01Q21/00 ,  H01Q3/26 ,  H04B7/06 ,  H04L27/36

Abstract: Disclosed is an apparatus and method for linearizing an adaptive array antenna system. The apparatus and method for linearizing an adaptive array antenna system uses an identical feedback path as feedback path for estimation of a transfer function and a feedback path for linearization of each transmission channel in a multi-channel transmitter, thereby reducing hardware complexity of an adaptive array transmitter.

公开(公告)号：KR20120072040A

公开(公告)日：2012-07-03

申请号：KR20100133804

申请日：2010-12-23

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： KANG BYUNG SU ,  KWON HEON KOOK ,  JUNG JAE HO

IPC: H04W88/12 ,  H04L7/00

CPC classification number: H04W56/004 ,  H04B7/2606 ,  H04W88/08

Abstract: PURPOSE: A delay compensation distribution type base station system is provided to acquire equal frame timing regardless of the location of a wireless apparatus by measuring route delay time respectively generated in an optical line. CONSTITUTION: Two or more uplink delay measurement units(311-1~311N) acquire uplink delay measurement values. A control unit(314) inputs a control signal for controlling uplink delay to each uplink delay compensation unit(322-1~322-N). Each uplink delay compensation unit compensates the delay of an uplink signal. Each uplink delay compensation unit outputs the compensated signal to a control apparatus.

Abstract translation: 目的：提供一种延迟补偿分配型基站系统，用于通过测量分别在光线路中生成的路由延迟时间来获取等帧时间，无论无线设备的位置如何。 构成：两个或多个上行链路延迟测量单元（311-1〜311N）获取上行链路延迟测量值。 控制单元（314）向每个上行链路延迟补偿单元（322-1〜322-N）输入用于控制上行链路延迟的控制信号。 每个上行链路延迟补偿单元补偿上行链路信号的延迟。 每个上行链路延迟补偿单元将补偿信号输出到控制装置。

公开(公告)号：KR20120070059A

公开(公告)日：2012-06-29

申请号：KR20100131458

申请日：2010-12-21

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： JO GWEON DO ,  KIM YOUNG HOON ,  KIM JOON HYUNG ,  OH JUNG HOON ,  YU CHANG WAHN ,  JUNG JAE HO

IPC: H04B1/62 ,  H03F1/32

CPC classification number: H04B1/62 ,  H03F1/3241 ,  H03F1/3258 ,  H03F2201/3212

Abstract: PURPOSE: A pre-distortion method based on polynomial expressions is provided to overcome discontinuity appeared at the boundary of regions by extracting the coefficients of the polynomial expressions. CONSTITUTION: Inputting signals which are the targets of pre-distortion are divided into polynomial expression regions(S210). A plurality of coefficient extracting regions are obtained(S220). The coefficient extracting regions correspond to the polynomial expression regions and include overlapped regions and the corresponding polynomial expression regions. Polynomial expression coefficients, which model the non-linear characteristic of the outputting signals, are extracted(S231). The coefficients of the extracted coefficients corresponding to the polynomial regions pre-distort the inputting signals by each polynomial region(S232).

Abstract translation: 目的：提出一种基于多项式表达式的预失真方法，通过提取多项式表达式的系数来克服出现在区域边界处的不连续性。 构成：作为预失真的目标的输入信号被划分为多项式表达区域（S210）。 获得多个系数提取区域（S220）。 系数提取区域对应于多项式表达区域，并且包括重叠区域和对应的多项式表达区域。 提取了对输出信号的非线性特性进行建模的多项式表达式（S231）。 对应于多项式区域的提取系数的系数通过各个多项式区域预失真输入信号（S232）。

公开(公告)号：KR20120071504A

公开(公告)日：2012-07-03

申请号：KR20100133073

申请日：2010-12-23

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： LEE SUNG JUN ,  JUNG JAE HO

IPC: H03F1/32 ,  H03F3/20

CPC classification number: H03F3/24 ,  H03F3/217 ,  H03F2200/331

Abstract: PURPOSE: An amplifier structure and an amplification method thereof are provided to remarkably reduce a delta-sigma modulation speed by performing delta-sigma modulation for an intermediate frequency input signal. CONSTITUTION: A delta-sigma modulator(110) performs the delta-sigma modulation of an input signal according to a received clock signal. A local oscillation signal generator(130) generates a local oscillation signal according to the received clock signal. An up converter(120) up-converts a delta-sigma modulated signal to a carrier frequency signal. A power amplifier(140) amplifies the up-converted signal. A bandpass filter(150) filters only an original signal amplified from the amplified signal. A linearizer(160) compensates for the nonlinear characteristics of the delta-sigma modulator and the nonlinear characteristics of the power amplifier in order to maintain the linearity of an entire system.

Abstract translation: 目的：提供放大器结构及其放大方法，通过对中频输入信号执行Δ-Σ调制，显着降低Δ-Σ调制速度。 构成：Δ-Σ调制器（110）根据接收到的时钟信号执行输入信号的Δ-Σ调制。 本地振荡信号发生器（130）根据接收到的时钟信号产生本地振荡信号。 升压转换器（120）将Δ-Σ调制信号上变频为载波频率信号。 功率放大器（140）放大上变频信号。 带通滤波器（150）仅对从放大信号放大的原始信号进行滤波。 线性化器（160）补偿Δ-Σ调制器的非线性特性和功率放大器的非线性特性，以便保持整个系统的线性。