会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 5. 发明申请
    • APPARATUS AND METHOD FOR CONTROLLING DISTORTION SIGNAL AND SYSTEM BY USING THE SAME
    • 用于通过使用它来控制失真信号和系统的装置和方法
    • US20130251055A1
    • 2013-09-26
    • US13587296
    • 2012-08-16
    • Chang Wahn YUGweon Do JOJung Hoon OHKwang Chun LEEJae Ho JUNG
    • Chang Wahn YUGweon Do JOJung Hoon OHKwang Chun LEEJae Ho JUNG
    • H04L27/28
    • H04L5/0007H04L27/2614H04L27/2627
    • Disclosed are a signal distortion component adjusting apparatus and method capable of adjusting error vector magnitude of subcarriers of a predetermined position by adjusting a signal distortion component occurring while decreasing a peak to average power ratio (PAPR) in a communication system of an orthogonal frequency division multiplexing (OFDM) technology or an orthogonal frequency division multiple access (OFDMA) scheme, and a system using the same. The present invention includes a signal distortion component adjusting unit to add an additional signal distortion component Pe((n+N/2) % N) to a signal distortion component e(n) that is obtained by subtracting a threshold Th value, set to decrease peak power, from an absolute value of a time domain signal x(n) of an input signal, and to thereby adjust the signal distortion component. The present invention may transmit a highly reliable signal by adjusting error vector magnitude of subcarrier of a frequency domain.
    • 公开了一种信号失真分量调整装置和方法,其能够通过调整在正交频分复用的通信系统中降低峰均功率比(PAPR)的同时发生的信号失真分量来调整预定位置的子载波的误差矢量幅度 (OFDM)技术或正交频分多址(OFDMA)方案,以及使用它们的系统。 本发明包括一个信号失真分量调整单元,用于将附加信号失真分量Pe((n + N / 2)%N)加到通过将阈值Th值减去得到的信号失真分量e(n) 从输入信号的时域信号x(n)的绝对值减小峰值功率,从而调整信号失真分量。 本发明可以通过调整频域的子载波的误差矢量幅度来发送高度可靠的信号。
    • 6. 发明申请
    • PMOS RESISTOR
    • PMOS电阻
    • US20120154029A1
    • 2012-06-21
    • US13332578
    • 2011-12-21
    • Seunghyun JANGJae Ho JUNG
    • Seunghyun JANGJae Ho JUNG
    • G05F1/10
    • H03H11/53
    • Provided is a PMOS resistor. The PMOS resistor includes a PMOS transistor pair, a switching unit, and a negative feedback unit. The PMOS transistor pair is symmetrically connected between first and second nodes. The switching unit compares a voltage of the first node and a voltage of the second node to output one of the voltages of the first and second nodes. The negative feedback unit receives an output of the switching unit to control a current which flows in the PMOS transistor pair, for maintaining a constant resistance value.
    • 提供一个PMOS电阻。 PMOS电阻器包括PMOS晶体管对,开关单元和负反馈单元。 PMOS晶体管对对称地连接在第一和第二节点之间。 开关单元将第一节点的电压和第二节点的电压进行比较,以输出第一和第二节点的电压之一。 负反馈单元接收开关单元的输出以控制在PMOS晶体管对中流动的电流,以保持恒定的电阻值。
    • 7. 发明申请
    • AUTOMATIC GAIN CONTROL DEVICE, SIGNAL RECEIVING APPARATUS, AND SIGNAL RECEIVING METHOD
    • 自动增益控制装置,信号接收装置和信号接收方法
    • US20090154617A1
    • 2009-06-18
    • US12329854
    • 2008-12-08
    • Jae Ho JUNGKwang Chun LEE
    • Jae Ho JUNGKwang Chun LEE
    • H04L27/08
    • H04L27/2662
    • A signal receiving apparatus according to an embodiment of the present invention includes: an amplifier that controls a gain according to a gain control signal and amplifies a received signal to generate an amplified signal; an analog-to-digital (A/D) converter that converts the amplified signal into a digital signal; a Fourier transform unit that performs Fourier transform of the digital signal to a frequency domain signal to generate a Fourier transform signal; a demodulator that demodulates the Fourier transform signal to generate a demodulated signal; and an automatic gain control unit that divides the Fourier transform signal into a noise period and a symbol period, calculates the signal level of the noise period based on the signal level of the symbol period, and generates the gain control signal according to the signal levels of the symbol period and the noise period. Accordingly, when a non-cyclic burst signal is received, the non-cyclic burst signal is divided into a signal presence period and a signal absence period, and the gain is only controlled by using the signal presence period. Therefore, accuracy of the signal level can be secured, and the signal level of the symbol can be calculated in the frequency domain, thereby reducing complexity.
    • 根据本发明实施例的信号接收装置包括:放大器,其根据增益控制信号控制增益,并放大接收信号以产生放大信号; 一个将放大的信号转换成数字信号的模拟(A / D)转换器; 傅立叶变换单元,其将数字信号的傅立叶变换执行到频域信号以产生傅里叶变换信号; 解调器,解调所述傅里叶变换信号以产生解调信号; 以及将傅立叶变换信号分割为噪声周期和符号周期的自动增益控制部,基于符号周期的信号电平来计算噪声周期的信号电平,并根据信号电平生成增益控制信号 的符号周期和噪声周期。 因此,当接收到非循环脉冲串信号时,非循环脉冲串信号被分成信号存在周期和信号不存在时段,并且仅通过使用信号存在周期来控制增益。 因此,可以确保信号电平的精度,并且可以在频域中计算符号的信号电平,从而降低复杂度。
    • 8. 发明申请
    • PREDISTORTION APPARATUSES AND METHODS
    • 预测装置和方法
    • US20120154041A1
    • 2012-06-21
    • US13331377
    • 2011-12-20
    • Young-Hoon KIMGweon Do JOJung Hoon OHJae Ho JUNG
    • Young-Hoon KIMGweon Do JOJung Hoon OHJae Ho JUNG
    • H03F1/26
    • H03F1/3247H03F1/3258H03F2201/3209H03F2201/3212H03F2201/3224
    • Provided is a predistortion apparatus which performs predistortion by reflecting a memory effect when linearizing an output of a nonlinear device using a wideband signal. The predistortion apparatus includes a predistortion unit and a coefficient extraction unit. The predistortion unit selects and outputs one of outputs of the sub-predistorters as an output signal according to intensity of an input signal. The coefficient extraction unit selects one of a plurality of coefficient extractors according to intensity of a nonlinear signal which is generated in response to the output signal, extracts a plurality of predistortion coefficients with the nonlinear signal and the output signal, and delivers the extracted predistortion coefficients to the predistortion unit. Accordingly, the memory effect is reflected even when the input signal is a wideband signal.
    • 提供一种预失真装置,其通过使用宽带信号线性化非线性装置的输出来反映存储器效应来执行预失真。 预失真装置包括预失真单元和系数提取单元。 预失真单元根据输入信号的强度选择并输出副预失真器的输出之一作为输出信号。 系数提取单元根据输出信号产生的非线性信号的强度,选择多个系数提取器中的一个,并用非线性信号和输出信号提取多个预失真系数,并将提取的预失真系数 到预失真单位。 因此,即使当输入信号是宽带信号时也会反映存储效应。
    • 10. 发明申请
    • FRONT-END APPARATUS OF WIRELESS TRANSCEIVER USING RF PASSIVE ELEMENTS
    • 使用射频被动元件的无线收发器的前端设备
    • US20130162495A1
    • 2013-06-27
    • US13619960
    • 2012-09-14
    • Heon Kook KWONByung Su KANGJae Ho JUNG
    • Heon Kook KWONByung Su KANGJae Ho JUNG
    • H01Q1/50
    • H01Q21/28
    • Disclosed is a front-end apparatus of an RF transceiver connected with an antenna in a wireless communication system. The front-end apparatus of an RF transceiver using radio-frequency passive elements includes: a plurality of band pass filters configured a transmission signal and a reception signal; a first circulator configured to output a first transmission signal to a second terminal and output a second reception signal input; a second circulator configured to output a second transmission signal input into the first terminal to the second terminal and output a first reception signal input into the second terminal to the third terminal; a passive directional double pole and double throw switch configured to process a route to be changed depending on directions of an input and an output; a first antenna configured to transmit the first transmission signal; and a second antenna configured to transmit the second transmission.
    • 公开了一种在无线通信系统中与天线连接的RF收发器的前端装置。 使用射频无源元件的RF收发器的前端装置包括:配置有发送信号和接收信号的多个带通滤波器; 第一循环器,被配置为将第一发送信号输出到第二终端,并输出第二接收信号输入; 第二循环器,被配置为将输入到所述第一端子的第二传输信号输出到所述第二端子,并将输入到所述第二端子的第一接收信号输出到所述第三端子; 被动方向双极双掷开关,被配置为根据输入和输出的方向处理要改变的路线; 第一天线,被配置为发送所述第一发送信号; 以及被配置为发送所述第二传输的第二天线。