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    • 1. 发明公开
    • I/Q 변조 송수신기에서 신호 왜곡을 줄이기 위한 디바이스 및 방법
    • 用于减少I / Q调制收发器信号失真的装置和方法
    • KR1020160072776A
    • 2016-06-23
    • KR1020150167191
    • 2015-11-27
    • 애플 인크.
    • 비튼,가이
    • H04B17/11H04B17/00H04B1/62
    • H04L27/3863H04L27/364
    • I/Q 송수신기에서 I/Q 미스매치및/또는 LO 누설을줄이거나실질적으로제거하기위한디바이스및 방법이제공된다. 예로서, 전자디바이스는동상/직교(I/Q) 신호를수신하고, I/Q 신호에기초하여전자기신호를생성하도록구성되는송수신기를포함한다. 그러나, 전자기신호는또한왜곡을포함할수 있다. 따라서, 송수신기는또한전자기신호에기초하여피드백신호를수신하고, 피드백신호를통해왜곡의에너지를측정하고, 왜곡의에너지에적어도부분적으로기초하여하나이상의보정률을생성하도록구성된다. 하나이상의보정률은전자기신호의왜곡을줄이거나실질적으로제거하는데 이용될수 있다.
    • 提供了用于减少或基本上消除I / Q收发器中的I / Q失配和/或LO泄漏的装置和方法。 例如,电子设备包括接收同相/正交(I / Q)信号并基于I / Q信号产生电磁信号的收发器。 然而,电磁信号还可以包括失真。 因此,收发器还基于电磁信号接收反馈信号,通过反馈信号测量失真能量,并且基于失真能量的至少一部分产生至少一个校正因子。 可以使用至少一个校正因子来减少或基本消除电磁信号的失真。
    • 7. 发明授权
    • 고속 동위상 및 직교위상 불균형 교정
    • 高速同相和正交不平衡校正
    • KR101076970B1
    • 2011-10-26
    • KR1020097000206
    • 2007-06-06
    • 퀄컴 인코포레이티드
    • 이,채관톰슨,피터,에이.세나키스,빌한,경,섭
    • H04L27/08H04B1/16
    • H04B1/30H04L27/364H04L27/3863
    • 본발명의다른실시예는교정된기준수신기를사용하지않고통신시스템에서트랜시버를교정하는기술을포함한다. 제 1 주파수의제 1 테스트신호는 I-Q 불균형을갖는직교변조기를갖는송신기에입력된다. 직교변조기를반송파주파수를갖는다. 송신기는송신기신호를생성한다. 송신기신호는제 1 테스트신호및 제 1 주파수의 2배인제 2 주파수의제 2 테스트신호를갖는합성신호를생성하기위해검출된다. 합성신호는디지털화된다. I-Q 직류(DC) 오프셋보정들, 위상보정및 이득보정은폐쇄형솔루션을사용하여 I-Q 불균형을보정하기위해디지털화된합성신호로부터계산된다.
    • 本发明的另一实施例包括一种用于校准通信系统中的收发器而不使用经校准的参考接收器的技术。 第一频率的第一测试信号被输入到具有I-Q不平衡的正交调制器的发射机。 正交调制器具有载波频率。 发射器产生发射器信号。 检测发射器信号以产生具有第一测试信号和第二测试信号的复合信号,其中第一测试信号和第二测试信号是第一频率的第二频率的两倍。 复合信号被数字化。 从数字化合成信号计算I-Q直流(DC)偏移校正,相位校正和增益校正,以使用封闭解来校正IQ不平衡。
    • 8. 发明公开
    • 직교 주파수 분할 다중 수신기에서 아이/큐 불균형파라미터를 추정하는 장치 및 방법
    • 用于估计OFDM接收机中的I / Q误码率参数的方法和方法
    • KR1020090089531A
    • 2009-08-24
    • KR1020080014749
    • 2008-02-19
    • 삼성전자주식회사
    • 배정화배상민
    • H04L27/26H04J11/00
    • H04L27/2647H04L5/0048H04L27/2613H04L27/3863H04L27/2675H04L27/2666H04L27/2695
    • An apparatus and a method for estimating I/Q mismatch parameter in OFDM(Orthogonal Frequency Division Multiplexing) receiver are provided to correct I/Q mismatch on a real time by compensating a phase difference and an amplitude difference between I channel and Q channel due to the I/Q mismatch through one OFDM preamble value received in an OFDM receiver. An ADC(Analog to Digital Converter)(300) quantizes a signal received from a RF front end part into a digital signal. A preamble confirming part(312) confirms a preamble in an output signal, outputs a preamble signal to a pilot tone position finding part(314), and outputs a pilot signal of the preamble to a mismatch parameter estimator. The pilot tone position finding part finds a position of the pilot tone in the preamble signal, and outputs the position to the mismatch parameter estimator. The mismatch parameter estimator(316) estimates a phase difference and an amplitude difference according to a position of a pilot tone of the preamble of the received signal. An I/Q compensating circuit(302) compensates I/Q mismatch through the phase difference and the amplitude difference estimated by the mismatch parameter estimator.
    • 提供了一种用于估计OFDM(正交频分复用)接收机中的I / Q失配参数的装置和方法,用于通过补偿I信道和Q信道之间的相位差和幅度差来实时校正I / Q失配 在OFDM接收机中接收的一个OFDM前同步码值的I / Q失配。 ADC(模数转换器)(300)将从RF前端部分接收的信号量化为数字信号。 前导确认部(312)确认输出信号中的前同步码,将前导信号输出到导频音位置查找部(314),并将前导码的导频信号输出到失配参数估计器。 导频音位置查找部分找到前导码信号中导频音的位置,并将该位置输出到失配参数估计器。 不匹配参数估计器(316)根据接收信号的前导码的导频音的位置来估计相位差和幅度差。 I / Q补偿电路(302)通过相位差和由失配参数估计器估计的振幅差来补偿I / Q失配。
    • 9. 发明公开
    • 고속 동위상 및 직교위상 불균형 교정
    • 快速相位和平移不平衡校准
    • KR1020090021374A
    • 2009-03-03
    • KR1020097000206
    • 2007-06-06
    • 퀄컴 인코포레이티드
    • 이,채관톰슨,피터,에이.세나키스,빌한,경,섭
    • H04L27/08H04B1/16
    • H04B1/30H04L27/364H04L27/3863
    • An embodiment of the present invention includes a technique to calibrate receiver and transmitter in a communication system. N digitized samples I(n) and Q(n) are stored. The N digitized samples represent in-phase and quadrature (I-Q) components, respectively, of a down-converted signal from a receiver. The I-Q components are generated from a quadrature demodulator or modulator having I-Q imbalance. Phase and gain adjustment constants are computed from the N digitized samples to compensate for the I-Q imbalance using a closed form solution. Another embodiment of the present invention includes a technique to calibrate a transceiver in a communication system without using a calibrated reference receiver. A first test signal at a first frequency is injected to a transmitter having a quadrature modulator with I-Q imbalance. The quadrature modulator has a carrier frequency. The transmitter generates a transmitter signal. The transmitter signal is detected to generate a composite signal having the first test signal and a second test signal at a second frequency twice the first frequency. The composite signal is digitized. I-Q direct current (DC) offset, phase, and gain corrections are computed from the digitized composite signal to correct the I-Q imbalance using a closed form solution.
    • 本发明的实施例包括在通信系统中校准接收机和发射机的技术。 存储N个数字化样本I(n)和Q(n)。 N个数字化采样分别表示来自接收机的下变频信号的同相和正交(I-Q)分量。 I-Q分量由具有I-Q不平衡的正交解调器或调制器产生。 相位和增益调整常数是从N个数字样本中计算的,以使用闭合形式解决方案来补偿I-Q失衡。 本发明的另一个实施例包括在通信系统中校准收发器而不使用经校准的参考接收机的技术。 将第一频率的第一测试信号注入具有I-Q不平衡的正交调制器的发射机。 正交调制器具有载波频率。 发射机产生发射机信号。 检测发射机信号以产生具有第一频率的第二频率的第一测试信号和第二测试信号的复合信号。 复合信号被数字化。 从数字化复合信号计算I-Q直流(DC)偏移,相位和增益校正,以使用闭合形式解决方案来校正I-Q不平衡。
    • 10. 发明授权
    • 직교 주파수 분할 다중 수신기의 시간영역 IQ 부정합검출 장치
    • 用于检测时域中OFDM接收器的智能错误的装置
    • KR100809206B1
    • 2008-02-29
    • KR1020060119886
    • 2006-11-30
    • 삼성전기주식회사
    • 조영하김경욱구본영
    • H04J11/00H04B1/707
    • H04L27/2647H04B1/30H04L27/3863H04L27/2662
    • An apparatus for detecting an IQ(In-Quadrature) mismatch of an OFDM receiver in a time domain is provided to improve time domain IQ mismatch compensation performance by minimizing an effect of fading. A first delay unit(21a) delays I-channel signals by one sample interval. A second delay unit(21b) delays Q-channel signals by one sample interval. A first phase mismatch detector(22a) multiplies the current input I-channel signal by the current Q-channel signal and outputs the multiplied result. A second phase mismatch detector(22b) multiplies the current I-channel signal by the delayed Q-channel signal and outputs the multiplied result. A third phase mismatch detector(22c) multiplies the delayed I-channel signal by the current Q-channel signal and outputs the multiplied result. A phase IQ mismatch detector includes a phase error calculator which multiplies outputs from the second and third phase mismatch detector by respective attenuation coefficients and adds the multiplied result. The phase error calculator subtracts the added result from the output of the first phase mismatch detector and outputs a phase error value.
    • 提供了用于检测时域中的OFDM接收机的IQ(正交)不匹配的装置,以通过最小化衰落的影响来改善时域IQ失配补偿性能。 第一延迟单元(21a)将I信道信号延迟一个采样间隔。 第二延迟单元(21b)将Q信道信号延迟一个采样间隔。 第一相位不匹配检测器(22a)将当前输入的I信道信号乘以当前的Q信道信号并输出​​相乘的结果。 第二相位不匹配检测器(22b)将当前的I信道信号乘以延迟的Q信道信号并输出​​相乘的结果。 第三相位不匹配检测器(22c)将延迟的I信道信号乘以当前的Q信道信号并输出​​相乘的结果。 相位失配检测器包括相位误差计算器,该相位误差计算器将来自第二和第三相位不匹配检测器的输出乘以相应的衰减系数,并相加乘法运算结果。 相位误差计算器从第一相位不匹配检测器的输出中减去相加结果,并输出相位误差值。