Calibration of Transmitter I/Q Imbalance Based on Digital Pre-distortion

CHEN Lei; YUE Guangrong; TANG Junlin; LI Shaoqian; SONG Zhiqun; ZENG Yuan

doi:10.11999/JEIT160581

Volume 39 Issue 4

Apr. 2017

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Article Navigation > Journal of Electronics & Information Technology > 2017 > 39(4): 847-853

CHEN Lei, YUE Guangrong, TANG Junlin, LI Shaoqian, SONG Zhiqun, ZENG Yuan. Calibration of Transmitter I/Q Imbalance Based on Digital Pre-distortion[J]. Journal of Electronics & Information Technology, 2017, 39(4): 847-853. doi: 10.11999/JEIT160581

Citation:

CHEN Lei, YUE Guangrong, TANG Junlin, LI Shaoqian, SONG Zhiqun, ZENG Yuan. Calibration of Transmitter I/Q Imbalance Based on Digital Pre-distortion[J]. Journal of Electronics & Information Technology, 2017, 39(4): 847-853. doi: 10.11999/JEIT160581

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Calibration of Transmitter I/Q Imbalance Based on Digital Pre-distortion

doi: 10.11999/JEIT160581

1.
2.
(National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China, Chengdu 611731, China)

Funds:

The National Science and Technology Major Project (2013ZX03005010), ITDCN Open Program (KX152600016 /ITD-U15007), The National Natural Science Foundation of China (61371103, 61401447)

Received Date: 2016-06-03
Rev Recd Date: 2016-12-13
Publish Date: 2017-04-19

Abstract

Abstract

The in-phase (I) and quadrature (Q) imbalance, carrier leakage and in-band distortion may lead to severe performance degradation, especially in direct-conversion radio architecture. An adaptive pre-distortion scheme is proposed to calibrate I/Q imbalance, carrier leakage and in-band distortion. In the proposed scheme, the inverse filter of each branch is estimated directly which avoids redundant computation. Moreover, an iterative scheme is proposed to track the parameters variation due to temperature in an online manner. By complexity analysis, the proposed scheme is efficient. The effectiveness of the scheme is testified by simulation.
- Wireless communications,
- Transmitter calibration,
- RF impairments

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References(12)

References

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