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

This paper presents a simple gain/phase blind compensation algorithm with an automatic gain control (AGC) function for the adoption of the AGC function and compensation for gain/phase imbalances in quadrature phase shift keying (QPSK) direct conversion receivers (DCRs). The AGC function is interacti...

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Bibliographic Details
Published in:ETRI journal 2004, 26(5), , pp.501-504
Main Authors: Song, Yun‐Jeong, Lee, Ho‐Jin, Ra, Sung‐Woong, Kim, Young‐Wan
Format: Article
Language:English
Subjects:
Automatic gain control (AGC)
direct conversion receivers (DCR)
gain mismatch
quadrature phase shift keying (QPSK)
전자/정보통신공학
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Summary:This paper presents a simple gain/phase blind compensation algorithm with an automatic gain control (AGC) function for the adoption of the AGC function and compensation for gain/phase imbalances in quadrature phase shift keying (QPSK) direct conversion receivers (DCRs). The AGC function is interactively operated with the compensation algorithm for gain/phase imbalances. By detecting the gain sum and difference values between the I‐channel and Q‐channel, the combined AGC and gain imbalance compensation algorithm provides a simpler DCR architecture.
ISSN:1225-6463
2233-7326
DOI:10.4218/etrij.04.0203.0034