A Novel Decomposition Analysis of Nonlinear Distortion in OFDM   Transmitter Systems

doi:10.1109/TSP.2015.2451109

CORC > 北京大学 > 信息科学技术学院

	A Novel Decomposition Analysis of Nonlinear Distortion in OFDM Transmitter Systems
	Lei Yiming ; O&apos ; Droma, Mairtin
刊名	IEEE TRANSACTIONS ON SIGNAL PROCESSING
	2015
关键词	Inter-modulation products nonlinear distortion OFDM power amplifier CONSUMER WIRELESS WORLD PERFORMANCE AMPLIFIER REDUCTION MODELS NOISE
DOI	10.1109/TSP.2015.2451109
英文摘要	In Orthogonal Frequency Division Multiplexing (OFDM) transmitter systems, nonlinear distortion is a major impairment caused by power amplifier (PA). The distortion is constituted by numerous noise-like inter-modulation products (IMPs). Although the overall behavior of nonlinear IMP distortion has been well studied, in large multi-carrier contexts, such as in OFDM, the knowledge of individual IMPs and their quantitative interrelationships, together with the derivation of behavioural knowledge and the predictability of consequences arising from such interrelationships, is a fairly unexplored topic. This is the subject of this paper. The powers of the very numerous individual IMPs generated are analytically derived based on a Bessel-Fourier PA behavioural model, and it is proven that these powers have only a small number of distinct powers. Proven also is that the ratios of these power values are constants, and that these constants are invariant with the particular PA's nonlinearity characteristics or operating point. Further, it is proven that specific types of IMPs dominate nonlinear distortion effects. Finally, it is shown that IMP power spectra can be derived from a simple product of two polynomials, which are quadrature functions of frequency and PA operating point, respectively. Application possibilities for findings presented in this paper, such as their potential to contribute efficiency improvements in OFDM system modulation fidelity calculations (over 1100 times faster than conventional methods), are also outlined in the conclusions.; National Natural Science Foundation of China [61471005, 61450004]; Beijing Natural Science Foundation; Scientific Research Foundation for Returned Overseas Scholars of State Education Ministry of China [Appl. 97683]; China Postdoctoral Science Foundation; Pre-Research Foundation of PLA General Armament Department; European Cooperation in Science and Technology (COST) Project [Action IC0905, IC0906]; State Key Laboratory of Advanced Optical Communication Systems and Networks; School of Electronics Engineering and Computer Science, Peking University, China; Telecommunications Research Centre, Department of Electronics and Computer Engineering, University of Limerick, Ireland; SCI(E); EI; ARTICLE; leiym@pku.edu.cn; Mairtin.ODroma@ul.ie; 19; 5264-5273; 63
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/416062]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Lei Yiming,O&apos,Droma, Mairtin. A Novel Decomposition Analysis of Nonlinear Distortion in OFDM Transmitter Systems[J]. IEEE TRANSACTIONS ON SIGNAL PROCESSING,2015.
APA	Lei Yiming,O&apos,&Droma, Mairtin.(2015).A Novel Decomposition Analysis of Nonlinear Distortion in OFDM Transmitter Systems.IEEE TRANSACTIONS ON SIGNAL PROCESSING.
MLA	Lei Yiming,et al."A Novel Decomposition Analysis of Nonlinear Distortion in OFDM Transmitter Systems".IEEE TRANSACTIONS ON SIGNAL PROCESSING (2015).