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Design of high efficient 3-level LINC transmitter using a 9-point finite difference method

Published online by Cambridge University Press:  25 May 2015

Jonggyun Lim  and
Hyunchul Ku
Jonggyun Lim
Affiliation:
Electronic Engineering, Konkuk University, Seoul, 143-701, Korea. Phone: +82 2 2049 6118
Hyunchul Ku*
Affiliation:
Electronic Engineering, Konkuk University, Seoul, 143-701, Korea. Phone: +82 2 2049 6118
*
Corresponding author: Hyunchul Ku Email: [email protected]
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Abstract

An efficiency of linear amplification with nonlinear components (LINC) system is degraded due to the low efficiency of a power combiner for high peak-to-average power ratio signals such as long-term evolution signal. A multi-level LINC system can be used to improve the performance of the conventional LINC system. In this paper, a novel 9-point finite difference method to determine the optimal threshold values for 3-level LINC system is suggested. Instead of solving the complicated differential equation, the proposed method can extract optimal threshold values efficiently by numerical method. The 3-level LINC system adopting the proposed scheme and dynamic biasing significantly improves the power efficiency and linear performance simultaneously. The proposed system is verified by comparing the performance of the 3-level system with those of the conventional and 2-level LINC systems.

Keywords

Wireless systems and signal processing (SDR, MIMO, UWB, etc.)Modelingsimulation and characterizations of devices and circuits
Type
Research Paper
Information
International Journal of Microwave and Wireless Technologies , Volume 8 , Issue 3: Journee Nationale des Micro-ondes (JNM) 2015 , May 2016 , pp. 521 - 527
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2015 

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References

REFERENCES

[1]Cox, D.C.: Linear amplification with nonlinear components. IEEE Trans. Commun., 22 (1974), 1942–1945.Google Scholar
[2]Jheng, K.-Y.; Chen, Y.-J.; Wu, A.-Y.: Multilevel LINC system design for power efficiency enhancement, in IEEE Workshop Signal Processing Systems, Shanghai, China, 2007.Google Scholar
[3]Chen, Y.-J.; Jheng, K.-Y.; Wu, A.-Y.; Tsau, H.-W.; Tzeng, B.: Multilevel LINC system design for wireless transmitters, in IEEE Int. Symp. on VLSI Design, Hsinchu, Taiwan, 2007.Google Scholar
[4]Jheng, K.-Y.; Chen, Y.-J.; Wu, A.-Y.: Multilevel LINC system designs for power efficiency enhancement of transmitters. IEEE J. Sel. Top. Signal Process., 3 (2009), 523–532.Google Scholar
[5]Laskar, J.; Lim, K.; Hur, J.; Kim, K.W.; Lee, O.; Lee, C.-H.: Emerging multi-level architectures and unbalanced mismatch calibration technique for high-efficient and high-linear LINC systems, in IEEE Int. Symp. on Circuit and Systems, Paris, France, 2010.CrossRefGoogle Scholar
[6]Hur, J.; Lee, O.; Kim, K.; Lim, K.; Laskar, J.: Highly efficient uneven multi-level LINC transmitter. IEE Electron. Lett., 45 (2009), 837–838.Google Scholar
[7]Aref, A.F.; Askar, A.; Nafe, A.A.; Tarar, M.M.; Negra, R.: Efficient amplification of signals with high PAPR using a novel multilevel LINC transmitter architecture, in European Microwave Conf., Amsterdam, The Netherland, 2012.CrossRefGoogle Scholar
[8]Borse, G.J.: Numerical Methods with MATLAB – a Resource for Scientists and Engineers, PWS Publishing, Boston, MA, 1997.Google Scholar
[9]Jo, C.-H.; Shin, C.; Suh, J.H.: An optimal 9-point, finite-difference, frequency-space, 2-D scalar wave extrapolator. Geophysics, 61 (1996), 529–537.Google Scholar
[10]Kahn, L.R.: Single sideband transmission by envelope elimination and restoration. IRE, 40 (1952), 803–806.Google Scholar
[11]Lim, J.; Kang, W.; Ku, H.: Compensation of path imbalance in LINC transmitter using EVM and ACPR look up tables, in Asia Pacific Microwave Conf., Yokohama, Japan, 2010.Google Scholar
[12]Guan, J.; Aref, A.F.; Hone, T.; Negra, R.: Linearity study of path imbalances in multi-level LINC transmitter for wideband LTE application, in European Microwave Conf., Nuremberg, Germany, 2013.Google Scholar