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Comparing the performance of OFDM and FBMC multicarrier systems in doubly-dispersive wireless channels
Signal Processing ( IF 4.4 ) Pub Date : 2021-02-01 , DOI: 10.1016/j.sigpro.2020.107818
Davide Mattera , Mario Tanda , Maurice Bellanger

Abstract In mobile communications, the most widely used multicarrier technique, namely OFDM, is known to exhibit performance limitations in high speed scenarios. FBMC is an alternative approach and, among FBMC techniques, the recently introduced FBMC-PAM scheme has emerged as the most robust to CFO. Therefore, it is chosen here as the challenger of OFDM for performance comparison in doubly dispersive channels. After presentation of the system model, multicarrier scheme and wireless channel, an analytical evaluation of the BER in the particular case of single path time-varying channel is provided for FBMC-PAM and validated through simulations. Then, simulation results are reported for both OFDM and FBMC-PAM, using the 3GPP multipath channel models. It appears that FBMC-PAM can outperform OFDM in highly time-varying frequency-selective channels.

中文翻译:

比较 OFDM 和 FBMC 多载波系统在双色散无线信道中的性能

摘要 在移动通信中,最广泛使用的多载波技术,即OFDM,在高速场景中表现出性能限制。FBMC 是一种替代方法,在 FBMC 技术中,最近引入的 FBMC-PAM 方案已成为对 CFO 最稳健的方案。因此,这里选择它作为 OFDM 的挑战者,用于双色散信道中的性能比较。在介绍了系统模型、多载波方案和无线信道之后,为 FBMC-PAM 提供了单路径时变信道特定情况下的 BER 分析评估,并通过仿真进行了验证。然后,使用 3GPP 多径信道模型报告 OFDM 和 FBMC-PAM 的仿真结果。看起来 FBMC-PAM 在高度时变的频率选择性信道中可以胜过 OFDM。
更新日期:2021-02-01
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