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    • 2. 发明公开
    • 주파수 편이 변조 신호의 수신 방법 및 장치
    • 用于接收频移键控信号的方法和设备
    • KR1020170079127A
    • 2017-07-10
    • KR1020150189344
    • 2015-12-30
    • 어보브반도체 주식회사
    • 문기태추상영홍석균
    • H04L27/14H04L1/00
    • H04L27/14H04B7/26H04L1/0054H04L25/03178H04L27/156
    • 본발명은주파수편이변조신호의수신방법및 장치에관한기술로서, 보다상세하게는변조지수추정을하지않으면서도수신감도를개선하도록복수의복소차등판별기의출력값을최대우도계열추정(MLSE, Maximum Likelihood Sequence Estimation) 기법을이용하여주파수편이변조신호(FSK, Frequency Shift Keying)를복구하는방법및 장치에관한것이다. 본발명의주파수편이변조신호의수신장치는 FSK 수신신호의기저대역신호의공액복소수(Complex Conjugate)를이용하는복수의차수를가지는복소차등판별기(Complex Differential Discriminator) 및상기복수의차수를가지는복소차등판별기의출력값에최대우도계열추정(MLSE, Maximum Likelihood Sequence Estimation) 기법을적용하여심볼을복구하는복구회로를포함한다.
    • 用于接收频移键控信号的方法和设备技术领域本发明涉及用于接收频移键控信号的方法和设备,并且更具体地涉及用于接收频移键控信号的方法和设备, 本发明涉及一种使用似然序列估计(FSK)技术来恢复频移键控(FSK)的方法和设备。 本发明的频移的调制信号的接收器是一个复杂的微分识别器(复域鉴别)和具有多个使用基带信号的复共轭(复数共轭)的FSK接收信号具有多个顺序的顺序复杂的微分 并且通过对鉴别器的输出值应用最大似然序列估计(MLSE)来恢复符号的恢复电路。
    • 6. 发明公开
    • 방송 신호 검출 장치 및 방법
    • 检测广播信号的方法和方法
    • KR1020130075401A
    • 2013-07-05
    • KR1020110143756
    • 2011-12-27
    • 전자부품연구원
    • 전원기이경택박경원김성준
    • H04J11/00H04B1/06
    • H04L27/0012H04L27/14H04L27/2605H04L27/2647H04H40/27H04B1/06
    • PURPOSE: A broadcasting signal detecting device and a method thereof are provided to distinguish DRM+ (Digital Radio Mondiale Plus) broadcasting and FM broadcasting signal in the hybrid broadcasting mode. CONSTITUTION: A broadcasting signal detecting device (10) comprises a guard-interval corrector (110), a reference signal generator (120), and a signal determining unit (130). The guard-interval corrector normalizes the received signal which is performed guard-interval correlation operation and outputs the correlation signal. The reference signal generator takes the average for the predetermined observation symbol period after performing correlation operation between the current sample and the previous sample of the received signal which is FM signal or DRM+ signal. The reference signal generator generates the reference signal by normalizing the average of for the observation symbol period using the mean power of the current sample and the previous sample. The signal determining unit detects the maximum value of the reference signal and judges the received signal is FM signal if the maximum value of the reference signal exceeds the predetermined threshold. [Reference numerals] (110) Guard-interval corrector; (120) Reference signal generator; (130) Signal determining unit
    • 目的:提供广播信号检测装置及其方法,以区分混合广播模式中的DRM +(Digital Radio Mondiale Plus)广播和FM广播信号。 构成:广播信号检测装置(10)包括保护间隔校正器(110),参考信号发生器(120)和信号确定单元(130)。 保护间隔校正器将执行保护间隔相关运算的接收信号归一化,并输出相关信号。 参考信号发生器在执行当前采样和作为FM信号或DRM +信号的接收信号的先前采样之间的相关操作之后,获取预定观测符号周期的平均值。 参考信号发生器通过使用当前样本和先前样本的平均功率标准化观察符号周期的平均值来生成参考信号。 信号确定单元检测参考信号的最大值,并且如果参考信号的最大值超过预定阈值,则判断接收信号是FM信号。 (附图标记)(110)保护间隔校正器; (120)参考信号发生器; (130)信号确定单元
    • 7. 发明公开
    • 데이터 수신 장치의 제로 크로싱 조절 방법
    • 控制数据接收装置的零交叉的方法
    • KR1020100136815A
    • 2010-12-29
    • KR1020090055131
    • 2009-06-19
    • 세종대학교산학협력단
    • 이성주염수남송형규
    • H04L27/14H04B1/16
    • H04L27/14
    • PURPOSE: In the preamble symbol shift of data which the zero-crossing way of regulation of data sink is forged the Gaussian frequency shift keying, the zero-crossing counter is controlled. In that way zero-crossing is generated in the header symbol shift. CONSTITUTION: The data sink receives a message data forged the Gaussian frequency shift keying from data source(S510). The data sink stores the zero-crossed times in the storage(S520). The memory having the zero-crossing accumulated value which data sink most bigs of the input time point of final sample data included in preamble is detected(S530).
    • 目的:在数据接收器的零交叉调节方式伪造高斯频移键控的数据的前导符号移位中,过零计数器被控制。 以这种方式,在标题符号移位中产生过零。 构成:数据接收器从数据源接收高斯频移键控消息数据(S510)。 数据接收器将零交叉时间存储在存储器中(S520)。 检测具有包含在前导码中的最终采样数据的输入时间点的最大数据的过零累加值的存储器(S530)。
    • 8. 发明公开
    • OOK 및 FSK 이중 모드 복조 방법 및 장치
    • 用于OOK和FSK调制信号的双模式解调方法和装置
    • KR1020100096668A
    • 2010-09-02
    • KR1020090015662
    • 2009-02-25
    • 전자부품연구원
    • 이연성김현식권기원서정욱위정욱백종호
    • H04L27/22H03D7/00
    • H04L27/0008H04L27/06H04L27/14
    • PURPOSE: An OKK and FSK dual mode demodulating method and a device thereof are provided to reduce a zero cross measuring error of a n on-off keying modulation signal by adding an optimum DC bias. CONSTITUTION: A band pass filter(220) passes a signal of at least two frequency bands. The band pass filter unit blocks the remaining frequency band signal. A dual mode demodulation module(210) divides the modulation method of the inputted signals by using frequency difference of the inputted signals. The band pass filter unit passes an OKK modulation signal and an FSK signal. The dual mode demodulation module includes a cross detector(212), a frequency calculator(213), and a frequency comparator(214).
    • 目的:提供OKK和FSK双模式解调方法及其装置,通过添加最佳DC偏压来减少n个开关键控调制信号的零交叉测量误差。 构成:带通滤波器(220)传递至少两个频带的信号。 带通滤波器单元阻止剩余的频带信号。 双模式解调模块(210)通过使用输入信号的频率差来分割输入信号的调制方式。 带通滤波器单元通过OKK调制信号和FSK信号。 双模解调模块包括交叉检测器(212),频率计算器(213)和频率比较器(214)。
    • 10. 发明公开
    • 알에프아이디 리더용 복조 장치
    • RFID读写器解调装置
    • KR1020080040813A
    • 2008-05-09
    • KR1020060108610
    • 2006-11-04
    • 한화테크윈 주식회사한양대학교 산학협력단
    • 조성호전기용이덕형
    • H04B1/16H04B5/02G06K17/00
    • H04B5/0062G06K7/10009H04B1/30H04L27/14
    • A demodulation apparatus for an RFID(Radio Frequency Identification) reader is provided to receive signal components of stronger strength according as signal components for a tag response exist to be closer on an axis, thereby improving tag response reception success rate in noise environment. At least one balun transformer(301) receives a tag response. A local oscillator(313) oscillates a reference carrier signal. A first in phase mixer(303) performs down-converting after mixing the tag response from the balun transformer with the reference carrier signal from the local oscillator. A first phase shifter(307) performs 90 degrees phase shift of the reference carrier signal of the local oscillator. A first quadrature phase mixer performs down-converting after mixing the tag response from the balun transformer with the reference carrier signal where the 90 degrees phase shift is performed by the first phase shifter. A second phase shifter(300) performs 45 degrees phase shift of the reference carrier signal of the local oscillator. A second in phase mixer(304) performs down-converting after mixing the tag response from the balun transformer with the reference carrier signal where the 45 degrees phase shift is performed by the second phase shifter. A third phase shifter(308) performs 90 degrees phase shift of the reference carrier signal where the 45 degrees phase shift is performed by the second phase shifter. A second quadrature phase mixer performs down-converting after mixing the tag response from the balun transformer with the reference carrier signal where the 90 degrees phase shift is performed by the third phase shifter.
    • 提供了一种用于RFID(射频识别)读取器的解调装置,用于根据标签响应的信号分量在轴上更接近地接收具有更强的强度的信号分量,从而提高噪声环境中的标签响应接收成功率。 至少一个平衡不平衡变压器(301)接收标签响应。 本地振荡器(313)振荡参考载波信号。 第一同相混频器(303)在将来自平衡不平衡变压器的标签响应与来自本地振荡器的参考载波信号混合之后执行下变频。 第一移相器(307)执行本地振荡器的参考载波信号的90度相移。 第一正交相位混频器在将来自平衡 - 不平衡转换器的标签响应与参考载波信号混合后执行下变频,其中由第一移相器执行90度相移。 第二移相器(300)执行本地振荡器的参考载波信号的45度相移。 第二同相混频器(304)在将来自平衡 - 不平衡转换器的标签响应与来自第二移相器执行45度相移的参考载波信号混合之后执行下变频。 第三移相器(308)执行由第二移相器执行45度相移的参考载波信号的90度相移。 第二正交相位混频器在将来自平衡 - 不平衡变压器的标签响应与参考载波信号混合后进行下变频,其中由第三移相器执行90度相移。