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Title: I/Q imbalance calibration using a genetic algorithm approach // The First Joint International Conference on Astrophysics for Young Scientists (JICA): Oktober 3-7, 2017, Byurakan, Armenia: [book of proceedings]
Creators: Huang Jia-jun; Zhang Chao-jie; Jin Zhong-he; Xu Jiu-Ling
Imprint: Saint-Petersburg: Peter the Great St. Petersburg Polytechnic University, 2017
Collection: Общая коллекция
Subjects: Радиопередатчики; genetic algorithm; I/Q imbalance; I/Q imbalance calibration; transponder; transmitter
UDC: 621.396.61(063)
Document type: Article, report
File type: PDF
Language: English
DOI: 10.18720/SPBPU/2/k17-51
Rights: Свободный доступ из сети Интернет (чтение, печать, копирование)

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Zero-IF architecture is one of the most integrated transmitter architecture, but I/Q imbalance can affect the transmitting performance and produce an unwanted mirror signal. To solve this problem, this paper proposes a calibration method of I/Q imbalance based on genetic algorithm (GA), which combines the additional loop-back path in the transmitter radio frequency (RF) end. In the digital baseband, the compensation parameters can be rapidly searched by using the global search capability of GA and the feedback information from loop-back path. The transmitting signal will be pre-compensated by using the obtained compensation parameters, so that I/Q imbalance can be calibrated.

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