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    • 1. 发明授权
    • 주파수 미러링을 이용한 통신 시스템
    • 使用频率镜像的通信系统
    • KR101627577B1
    • 2016-06-07
    • KR1020150059222
    • 2015-04-27
    • 아주대학교산학협력단
    • 임재성백호기고상순전민환
    • H04B7/185H04L27/16
    • H04B7/185H04B7/212H04L27/16
    • 본발명은분산네트워크환경에서효율적으로데이터를전송하는통신시스템에관한것이다. 본발명의일 실시예에따른중계장치는전송장치가제1 시간구간동안에전송한, 제1 주파수로변조된데이터를수신하는수신부, 상기수신된제1 주파수로변조된데이터를제2 주파수로변조하는주파수변조부및 상기제2 주파수로변조된데이터를수신장치로전송하는수신부를포함하고, 상기제2 주파수로변조된데이터는제2 시간구간동안에상기수신장치에서수신되고, 상기제1 시간구간과상기제2 시간구간은동일한프레임구간내에포함되며, 상기제2 시간구간은상기제1 시간구간으로부터상기전송장치로부터상기중계장치까지의전송에따른제1 시간지연및 상기중계장치로부터상기수신장치까지의전송에따른제2 시간지연만큼지연된다.
    • 本发明涉及在分布式网络环境中有效传输数据的通信系统。 根据本发明的实施例,中继装置包括:接收单元,接收在第一时间段内发送设备已发送的被调制成第一频率的数据; 将调制成接收的第一频率的数据调制成第二频率的频率调制单元; 以及发送单元,将调制到第二频率的数据发送到接收装置。 调制到区间频率的数据在第二时间段期间由接收装置接收,并且第一时间段和第二时间段被包括在同一帧区间中。 第二时间段根据从发送设备到中继设备的传输延迟第一时间延迟,并且根据从中继设备到接收设备的传输,从第一时间段延迟第二时间延迟。 因此,数据可以以帧中的两跳距离发送到发送设备和接收设备。
    • 2. 发明公开
    • FSK 수신기의 주파수 제한 증폭기
    • 频率限幅放大器在FSK接收器
    • KR1020080106278A
    • 2008-12-04
    • KR1020087023080
    • 2007-03-13
    • 톰슨 라이센싱
    • 핏슈,로버트,알란
    • H04L27/10H04L27/16
    • H04L27/16H03F1/3211H03F3/191H03F3/4508H03F3/45475H03F3/45488H03F3/50H03F2200/168H03F2200/451H03F2200/72H03F2203/5036H04H20/63H04H40/90
    • A system for processing signal communications between a frequency translation module (20) and an integrated receiver decoder (60). According to an exemplary embodiment, the decoder (60) and the frequency translation module comprise a signal processing apparatus comprising an input for receiving an frequency shift keyed modulated signal, an amplifier having negative feedback coupled to said input, wherein said input is further coupled to a first source of reference potential and a second source of reference potential; and a tank circuit coupled between said differential amplifier and an output. More particularly, the amplifier may comprise a first transistor having a first collector, a first emitter and a first base coupled to a signal source wherein said first base is further coupled to said first collector and a second transistor with a second base, a second emitter coupled to said first emitter, and a second collector, wherein said second collector is coupled to a bandpass filter and said bandpass filter is further coupled to an output. ® KIPO & WIPO 2009
    • 一种用于处理频率转换模块(20)和集成接收机解码器(60)之间的信号通信的系统。 根据示例性实施例,解码器(60)和频率转换模块包括信号处理设备,其包括用于接收频移键控调制信号的输入端,耦合到所述输入端的负反馈放大器,其中所述输入还耦合到 参考潜力的第一个来源和第二个参考潜力来源; 以及耦合在所述差分放大器和输出端之间的储能电路。 更具体地,放大器可以包括具有第一集电极,第一发射极和耦合到信号源的第一基极的第一晶体管,其中所述第一基极还耦合到所述第一集电极,第二晶体管具有第二基极,第二发射极 耦合到所述第一发射极和第二集电极,其中所述第二集电极耦合到带通滤波器,并且所述带通滤波器还耦合到输出端。 ®KIPO&WIPO 2009
    • 6. 发明公开
    • 반송파 복구 장치
    • 载波波形恢复装置
    • KR1020040061087A
    • 2004-07-07
    • KR1020020086868
    • 2002-12-30
    • 엘지전자 주식회사
    • 전정식
    • H04N7/015
    • H04L27/16
    • PURPOSE: A carrier wave recovering device is provided to utilize carrier wave pilot signals and received all data signals simultaneously even though frequency components corresponding to carrier wave signal components are completely removed by serious linear noise. CONSTITUTION: A carrier wave recovering device includes a phase splitter, first and second complex multipliers, first and second squarers and a subtracter, a band pass filter, a Gardner phase error detector, a loop filter and an oscillator. The phase splitter(603)separates phases of pass band signals digitalized by a fixed frequency. The first complex multiplier(604) complex-multiplies a phase-split real signal and a quadrature signal by demultiplexing carrier waves proportional to a phase error to deform the signals to two base band signals {i(t),q(t)}. The second complex multiplier(607) outputs two like offset QAM(Quadrature Amplitude Modulated) signals {i'(t),q'(t)} by the base band signals. The first and second squarers(609,610) non-linearly operate the like offset QAM signals and the subtracter(611) subtracts outputs from the first and second squarers from each other. The band pass filter(612) extracts components corresponding to carrier wave frequencies from the output of the subtracter. The Gardner phase error detector(613) detects a phase error of the filtered signals. The loop filter(614) carries out low band pass for outputs from the Gardner phase error detector, and outputs the filtered outputs to the oscillator(605) for carrier wave recovering.
    • 目的:提供载波回波装置,以利用载波导频信号并且即使通过严重的线性噪声完全去除与载波信号分量相对应的频率分量,也同时接收所有数据信号。 构成:载波恢复装置包括相分离器,第一和第二复数乘法器,第一和第二平方器以及减法器,带通滤波器,加纳尔相位误差检测器,环路滤波器和振荡器。 分相器(603)分离通过固定频率数字化的通带信号的相位。 第一复数乘法器(604)通过对与相位误差成比例的载波进行解复用来将相位分割实信号和正交信号复数乘以将信号变形为两个基带信号{i(t),q(t)}。 第二复数乘法器(607)通过基带信号输出两个相似的偏移QAM(正交幅度调制)信号{i'(t),q'(t)}。 第一和第二平方(609,610)非线性地操作相似的偏移QAM信号,减法器(611)从第一和第二平方相减去输出。 带通滤波器(612)从减法器的输出中提取对应于载波频率的分量。 加德纳相位误差检测器(613)检测滤波信号的相位误差。 环路滤波器(614)对来自加德纳相位误差检测器的输出执行低频带通,并将滤波后的输出输出到振荡器(605)以进行载波恢复。
    • 7. 发明公开
    • 주파수 상향 변환기
    • 频率转换器
    • KR1020020028460A
    • 2002-04-17
    • KR1020000059483
    • 2000-10-10
    • 엘지전자 주식회사
    • 하헌성김우식
    • H04L27/12
    • H04L27/16
    • PURPOSE: A frequency up converter is provided, which reduces a time and a manpower required in tuning by controlling a gain by a program with a digital method, and reduces production costs by outputting a control voltage by a potentiometer, and outputting a transmission gate control signal with a digital value by a PLD. CONSTITUTION: A frequency up conversion part(10) receives an in-phase(I) and an orthogonal(Q) component signal and then performs an auto gain control(AGC). An input signal detector(11) detects a base band signal of in-phase and orthogonal component inputted to the frequency up conversion part. An output signal detection part(12) detects a signal being output from the frequency up conversion part. A control circuit part(13) outputs information as to transmission gate control. A PLD part(14) a transmission gain control value to control an attenuator(ATT) of the frequency up conversion part by assembling signals from the input signal detection part and the output signal detection part and the control circuit part. And a digital type potentiometer(15) outputs a control voltage(TX_AGC VOLTAGE) corresponding to the transmission gain control value being output from the PLD part.
    • 目的:提供一种升频转换器,通过使用数字方式控制程序的增益来减少调谐所需的时间和人力,并通过由电位器输出控制电压来降低生产成本,并输出传输门控制 信号与PLD的数字值。 构成:上变频部(10)接收同相(I)和正交(Q)分量信号,然后执行自动增益控制(AGC)。 输入信号检测器(11)检测输入到上变频部分的同相和正交分量的基带信号。 输出信号检测部(12)检测从升频转换部输出的信号。 控制电路部(13)输出关于传输门控制的信息。 PLD部分(14)通过组合来自输入信号检测部分和输出信号检测部分和控制电路部分的信号来控制升频转换部分的衰减器(ATT)的传输增益控制值。 并且数字式电位器(15)输出与从PLD部分输出的发送增益控制值对应的控制电压(TX_AGC VOLTAGE)。
    • 10. 发明公开
    • 디지털 방송수신기의 반송파 복원 장치 및 그 방법
    • 用于在数字广播接收机中恢复载波的装置及其方法
    • KR1020080088308A
    • 2008-10-02
    • KR1020070031151
    • 2007-03-29
    • 엘지전자 주식회사
    • 김재형
    • H04N7/015H04N7/00
    • H04L27/066H04L7/0029H04L27/16
    • An apparatus for recovering a carrier wave in a digital broadcasting receiver and a method thereof are provided to compensate a frequency offset of the carrier wave by using a complex signal at a baseband independently of a pilot signal to recover the carrier wave, thereby obtaining improved carrier wave recovery capability even in a selective fading environment to improve the performance of the digital broadcasting receiver. An apparatus for recovering a carrier wave in a digital broadcasting receiver includes a phase divider(170), a downsampler(250), and a carrier wave recovery unit(190). The phase divider receives a digitally converted pass band signal, divides the pass band signal into pass band complex signals of actual and imaginary number components with different phases, and outputs the pass band complex signals. The downsampler samples and outputs the complex signal at a baseband outputted through the phase divider in the same frequency as a symbol frequency. The carrier wave recovery unit receives the complex signal outputted from the downsampler, multiplies the complex signal by a complex sine wave, of which a center frequency is 1/n of the symbol frequency, to create an OQAM(Offset-Quadrature Amplitude Modulation) signal of actual and imaginary number components, calculates a phase error value from the OQAM signal, creates a complex sin wave for compensating the calculated phase error value, multiplies the complex signal outputted from the phase divider by the complex sine wave, and converts the complex signal into a baseband signal in which a frequency offset is compensated.
    • 提供一种用于在数字广播接收机中恢复载波的装置及其方法,用于通过独立于导频信号在基带处使用复数信号来补偿载波的频率偏移,以恢复载波,从而获得改进的载波 即使在选择性衰落环境中也能提高数字广播接收机的性能。 一种用于在数字广播接收机中恢复载波的装置包括相位分配器(170),下采样器(250)和载波恢复单元(190)。 分相器接收数字转换的通带信号,将通带信号分成具有不同相位的实数和虚数分量的通带复信号,并输出通带复信号。 下采样器以与符号频率相同的频率通过相位分配器输出的基带采样并输出复信号。 载波恢复单元接收从下采样器输出的复信号,将复信号乘以中心频率为符号频率的1 / n的复正弦波,以产生OQAM(偏移 - 正交幅度调制)信号 的实数和虚数分量,从OQAM信号计算相位误差值,产生用于补偿计算出的相位误差值的复数sin波,将由相位分配器输出的复数信号乘以复数正弦波,并将复信号 成为补偿了频率偏移的基带信号。