A Joint Scheme of AGC and Gain/Phase Mismatch Compensation for QPSK DCR

ETRI Journal

关键词: direct conversion receivers (DCR);    quadrature phase shift keying (QPSK);    gain mismatch;    Automatic gain control (AGC);   

Others  :  1185099
DOI  :  10.4218/etrij.04.0203.0034

【 摘 要 】

This paper presents a simple gain/phaseblind compensation algorithm with an automatic gain control(AGC) function for the adoption of the AGC function andcompensation for gain/phase imbalances in quadrature phaseshift keying (QPSK) direct conversion receivers (DCRs). TheAGC function is interactively operated with the compensationalgorithm for gain/phase imbalances. By detecting the gainsum and difference values between the I-channel and Qchannel,the combined AGC and gain imbalancecompensation algorithm provides a simpler DCR architecture.

   

【 参考文献 】

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