Hostname: page-component-586b7cd67f-t7czq Total loading time: 0 Render date: 2024-11-24T20:44:10.085Z Has data issue: false hasContentIssue false
  • English
  • Français

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]
Get access Rights & Permissions [Opens in a new window]

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 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

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