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QUADRATURE DEMODULATING APPARATUS FOR COMPENSATING GAIN AND PHASE IMBALANCES BETWEEN IN-PHASE AND QUADRATURE-PHASE COMPONENTS
QUADRATURE DEMODULATING APPARATUS FOR COMPENSATING GAIN AND PHASE IMBALANCES BETWEEN IN-PHASE AND QUADRATURE-PHASE COMPONENTS
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机译:正交解调装置,用于补偿同相和正交相之间的增益和相位不平衡
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摘要
Disclosed is a quadrature demodulator for high-speed wireless communication, which comprises: an A/D converter for converting received signals into digital signals; a signal recovery unit for recovering carriers and symbol timing from the signals converted by the A/D converter; a decision unit for detecting recovered signals output by the signal recovery unit, and performing a decision process on them; an I/Q gain imbalance detector for detecting gain imbalances of the I and Q-phase components from the recovered signals, and outputting an I/Q gain compensation value for compensating for the gain imbalances; and an I/Q gain compensator, provided between the A/D converter and the signal recovery unit, for reflecting the I/Q gain compensation value output by the I/Q gain imbalance detector to the received signals.
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机译:公开了一种用于高速无线通信的正交解调器,其包括:A / D转换器,用于将接收到的信号转换成数字信号;信号恢复单元,用于从由A / D转换器转换的信号中恢复载波和符号定时;决策单元,用于检测信号恢复单元输出的恢复信号,并对它们进行决策处理; I / Q增益不平衡检测器,用于从恢复的信号中检测I相和Q相分量的增益不平衡,并输出用于补偿增益不平衡的I / Q增益补偿值; I / Q增益补偿器,设置在A / D转换器和信号恢复单元之间,用于将I / Q增益不平衡检测器输出的I / Q增益补偿值反映到接收信号。
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