Title :
Optimal input power back-off with nonlinear power amplifier for electric power systems
Author :
Shaowei Huang ; Zhibo Xu ; Zhenquan Sun
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing, China
Abstract :
The nonlinear distortion from power amplifier (PA) distorts the signal and causes significant impact on the symbol-error-rate (SER) performance for the electric-power-systems (EPS) communications. This paper proposes a calculation of the optimal input power back-off (IBO) to resist PA nonlinearity, as well as guarantee an appropriate signal-to-noise ratio (SNR), by minimizing the mean square error (MSE) between the received symbols and the standard constellation points. Simulations indicate that the optimal IBO is variable and increases as the noise level grows. In addition, by using the calculated optimal IBO, the SER performance is better than that by using other fixed IBO values, showing impressive significance of the proposed method.
Keywords :
error statistics; interference suppression; mean square error methods; power amplifiers; power system faults; power system reliability; EPS communication; IBO; MSE minimization; PA; SER performance; SNR; electric power system; mean square error minimization; nonlinear distortion; nonlinear power amplifier; optimal input power back-off; signal-to-noise ratio; symbol error rate performance; Gain; Noise level; Nonlinear distortion; Optimized production technology; Quadrature amplitude modulation; Signal to noise ratio; 1 dB compression point; Electric power systems; nonlinear distortion; power amplifier; signal-to-noise ratio;
Conference_Titel :
Communication Problem-Solving (ICCP), 2014 IEEE International Conference on
Print_ISBN :
978-1-4799-4246-6
DOI :
10.1109/ICCPS.2014.7062201
