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JP2004173281A Method and apparatus for i/q imbalance estimation 审中-公开
标题翻译：用于I / Q不平等估计的方法和装置
公开(公告)号：JP2004173281A
公开(公告)日：2004-06-17
申请号：JP2003389611
申请日：2003-11-19
申请人： Realtek Semiconductor Corp , 瑞▲いー▼半導体股▲ふん▼有限公司
发明人： LIU DER-ZHENG , LIU TAI-CHENG , TUNG SONG-NIEN , YEN KUANG-YU
IPC分类号： H04L27/38 , H03D3/00 , H04B1/40 , H04J11/00 , H04L1/00 , H04L27/00 , H04L27/26
CPC分类号： H03D3/009 , H04B1/40 , H04L27/2627 , H04L27/2649 , H04L2027/0016 , H04L2027/0022
摘要： PROBLEM TO BE SOLVED: To provide a method and an apparatus for estimating and compensating I/Q imbalance in a quadrature modulation/demodulation system.
SOLUTION: The apparatus comprises: a frequency domain signal generator; a transmitting terminal composed of a transmission compensation matrix circuit an I modulation path and a Q modulation path; a receiving terminal composed of an I demodulation path, a Q demodulation path and a reception compensation matrix circuit; and an I/Q imbalance estimator. A parameter to be used for compensating the I/Q imbalance is then calculated by transmitting a first signal of which the real region is symmetric and the imaginary region is asymmetric, a second signal of which the real region is asymmetric and the imaginary region is symmetric, and a third signal of which the real region is symmetric and the imaginary region is asymmetric and of which the amplitudes in the regions are equal in frequency domains.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供用于估计和补偿正交调制/解调系统中的I / Q不平衡的方法和装置。解决方案：该装置包括：频域信号发生器; 由I调制路径和Q调制路径构成的发送补偿矩阵电路的发送终端; 由I解调路径，Q解调路径和接收补偿矩阵电路构成的接收终端; 和I / Q不平衡估计器。用于补偿I / Q不平衡的参数然后通过发送实际区域对称的第一信号和虚部区域是不对称的，实际区域是不对称的第二信号，虚部区域是对称的，以及第三信号，其实际区域是对称的，并且虚部区域是不对称的，并且该区域中的幅度在频域中相等。版权所有（C）2004，JPO

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