The impact of signal clipping and nonlinear power amplifier on SEFDM system
- 1 Ph. D. (Eng.), Department «Radioelectronic Means of Information Protection», Peter The Great St.Petersburg Polytechnic University
- 2 Assistant, Department «Radioelectronic Means of Information Protection», Peter The Great St.Petersburg Polytechnic University
Abstract
The impact of distortions caused by nonlinear power amplifier (PA) is evaluated for BPSK and QPSK Spectrally Efficient Frequency Di-vision Multiplexing (SEFDM) signals. System performance depends on input power back-off (IBO) and SEFDM parameters, such as modulation scheme, frequency spacing between subcarriers and total number of subcarriers. Performance is quantified with total de-gradation (TD), defined as the sum (in decibels) of the IBO and the increment in the ratio Eb/No required to maintain a given bit error rate (BER) with respect to the situation of perfectly linear PA. IBO corresponding to minimum TD is obtained. Additional clipping degrades overall BER performance.
How to cite
Рашич А.В., Фадеев Д.К. Влияние клиппирования и смещения рабочей точки усилителя мощности на помехоустойчивость сигналов SEFDM // Радиотехника. 2015. № 9. С. 17–23.
References
- Xu T., Darwazeh I. Spectrally Efficient FDM: Spectrum Saving Technique for 5G - // 1st International Conference on 5G for Ubiquitous Connectivity (5GU). 2014 .
- Hamamura M., Tachikawa S. Bandwidth efficiency improvement for multi-carrier systems // 15th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC). 2004. V. 1.
- Antognetti P. Power Integrated Circuits: Physics, Design, and Applications. NewYork. McGraw-Hill. 1986. 544 p.
- Makarov S.B., Markov A.M. Vlijanie amplitudnogo ogranichenija kvadraturnykh sostavljajushhikh signalov s OFDM v moduljatore radioperedatchika na pomekhoustojjchivost priema // Nauchno-tekhnicheskie vedomosti SPbGPU. 2012. № 2(145).
- Thompson S.C., Proakis J.G., Zeidler J.R. The Effectiveness of Signal Clipping for PAPR and Total Degradation Reduction in OFDM Systems // IEEE Global Telecommunications Conference (GLOBECOM). 2005.
- Guel D., Palicot J. Analysis and comparison of clipping techniques for OFDM Peak-to-Average Power Ratio reduction // 16th International Conference on Digital Signal Processing. 2009
- Ahmed S.I. Spectrally Efficient FDM Communication Signals and Transceivers: Design, Mathematical Modelling and System Optimization // A thesis submitted for the degree of Doctor of Philosophy. 2011.
- Rapp C. Effects of the HPA-nonlinearity on a 4-DPSK/OFDM signal for a digital sound broadcasting system // 2nd European Conference on Satellite Com m unications (E CSC). Li´ege. Belgium. October 1991.
- D-Andrea A.N., et al. RFPowerAmplifierLinearizationThroughAmplitudeandPhaseDistortion // IEEETrans. Commun. November 1996. V. 44. № 11.
- Kislitsyn A.B., Rashich A.V., Tan N.N. Generation of SEFDM-Signals Using FFT/IFFT // 14th International Conference NEW2AN 2014 and 7th Conference ruSMART 2014.
- Zavjalov S.V., Makarov S.B., Volvenko S.V. Nonlinear Coherent Detection Algorithms of Nonorthogonal Multifrequency Signals // 14th International Conference NEW2AN 2014 and 7th Conference ruSMART.