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Detail
Journal Article
A Joint Scheme of AGC and Gain/Phase Mismatch Compensation for QPSK DCR
- Authors
- Yun Jeong Song, Ho Jin Lee, Sung Woong Ra, Young Wan Kim
- Issue Date
- 2004-10
- Citation
- ETRI Journal, v.26, no.5, pp.501-504
- ISSN
- 1225-6463
- Publisher
- 한국전자통신연구원 (ETRI)
- Language
- English
- Type
- Journal Article
- Abstract
- 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.