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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

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