Intensive Performance Comparison between OFDM-Based and FBMC-Based Uplink Systems for 5th-and-Beyond Generation 


Vol. 44,  No. 5, pp. 814-828, May  2019
10.7840/kics.2019.44.5.814


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  Abstract

SC-FDMA, a uplink standard for 4G mobile communication is selectively considered in 5G mobile communication. Meanwhile, to overcome the drawbacks of SC-FDMA such as demanding strict interuser synchronization, FBMC and LP-FBMC which is a improved version of FBMC are considered. However, the conventional researches cannot provide a meaningful performance comparison in the practical environments with various channel impairments because they evaluated with one-dimensional impairment. Hence, in this paper, we compare the performances of uplink modulation schemes in a situation where three major channel impairments in the uplink systems, i.e., interuser frequency/timing offsets and the nonlinear signal distortion caused by HPA, coexist. Simulation results show that the performances of SC-FDMA and FBMC are significantly degraded by the interuser frequency/timing offsets and the HPA nonlinearity, respectively. We investigate the preferred regions of major channel impairments where SC-FDMA ourperforms FBMC and vice versa. Also, we confirm that the LP-FBMC is robust to both the interuser frequency/timing offsets and HPA nonlinearity in any situation considered. In addition, we analyze the performance for nonlinear signal distortion based on a realistic model using the optimized signal power to clipping level and noise variance as well as the conventional (nonoptimized) signal power model.

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  Cite this article

[IEEE Style]

S. Jang, D. Na, K. Choi, "Intensive Performance Comparison between OFDM-Based and FBMC-Based Uplink Systems for 5th-and-Beyond Generation," The Journal of Korean Institute of Communications and Information Sciences, vol. 44, no. 5, pp. 814-828, 2019. DOI: 10.7840/kics.2019.44.5.814.

[ACM Style]

Sangmin Jang, Dongjun Na, and Kwonhue Choi. 2019. Intensive Performance Comparison between OFDM-Based and FBMC-Based Uplink Systems for 5th-and-Beyond Generation. The Journal of Korean Institute of Communications and Information Sciences, 44, 5, (2019), 814-828. DOI: 10.7840/kics.2019.44.5.814.

[KICS Style]

Sangmin Jang, Dongjun Na, Kwonhue Choi, "Intensive Performance Comparison between OFDM-Based and FBMC-Based Uplink Systems for 5th-and-Beyond Generation," The Journal of Korean Institute of Communications and Information Sciences, vol. 44, no. 5, pp. 814-828, 5. 2019. (https://doi.org/10.7840/kics.2019.44.5.814)

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pISSN : 1226 - 4717
eISSN : 2287 - 3880