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http://dx.doi.org/10.7840/kics.2016.41.4.415

BER Performance Comparison and Evaluation of 5G Candidate Waveforms Based on DFT Spreading under the Nonlinear HPA  

An, Changyoung (Department of electronic engineering, Chungbuk National University)
Ryu, Heung-Gyoon (Department of electronic engineering, Chungbuk National University)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.41, no.4, 2016 , pp. 415-423 More about this Journal
Abstract
High PAPR (Peak-to-Average Power Ratio) characteristic causes some problems like system performance degradation and OOB (Out-of-Band) power increasement under the HPA (High Power Amplifier) nonlinearity condition. UFMC (Universal Filtered Multi-Carrier) and FBMC (Filter Bank Multi-Carrier) are regarded as 5G(Generation) candidate waveforms. In this paper, we evaluate and analyze performance of these systems with DFT-s (Discrete Fourier Transform Spreading) technique under the nonlinear HPA environment. In this paper, we describe OFDM (Orthogonal Frequency Division Multiplexing), UFMC, FBMC, DFT-s-OFDM, DFT-s-UFMC, and DFT-s-FBMC system, and evaluate BER (Bit Error Rate) performance of these systems. As simulation results, BER performance degradation by HPA nonlinearity of DFT-s-OFDM and DFT-s-UFMC is greatly overcome by DFT spreading technique. However, BER performance degradation by HPA nonlinearity of DFT-s-FBMC system is little overcome.
Keywords
DFT spreading; DFT-s-OFDM; DFT-s-FBMC; DFT-s-UFMC; HPA nonlinearity;
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