Chapter title | Efficient low-power design and implementation of IQ-imbalance compensator using early termination |
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Authors | Cetin, E., Kale, I. and Morling, R.C.S. |
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Abstract | In this paper, we propose a low-complexity architecture for the implementation of adaptive IQ-imbalance compensation in quadrature zero-IF receivers. Our blind IQ-compensation scheme jointly compensates for IQ phase and gain errors without the need for test/pilot tones. The proposed architecture employs early-termination of the iteration process; this enables the powering-down of the parts of the adaptive algorithm thereby saving power. The complexity, in terms of power-down efficiency is evaluated and shows a reduction by 37-50 % for 32-PSK and 37-58 % for 64-QAM modulated signals. |
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Keywords | Error compensation, intermediate-frequency amplifiers, quadrature amplitude modulation, receivers, IQ phase error, IQ-imbalance compensator QAM adaptive algorithm, adaptive compensation, blind IQ-compensation gain error, low-power design, quadrature zero-IF receiver, telecommunication channels |
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Book title | Proceedings of the 2006 IEEE International Symposium on Circuits and Systems, May 21-24, 2006, Island of Kos, Greece, (ISCAS 2006) |
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Page range | 4995-4998 |
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Year | 2006 |
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Publisher | IEEE |
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Publication dates |
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Published | 2006 |
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Place of publication | Los Alamitos, USA |
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ISBN | 0780393902 |
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Digital Object Identifier (DOI) | https://doi.org/10.1109/ISCAS.2006.1693753 |
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