Futuristic mobile data networks are expected to reach higher data rates per user to accommodate the specifications of emerging services, such as triple play and mobile applications. Researchers are carrying out their works to tackle the drawbacks of traditional orthogonal frequency-division multiplexing by designing new waveforms with high spectral efficiency and low out-of-band emissions. Among many others, filter bank multicarrier (FBMC) is an appealing candidate for beyond 5G that fulfills these constraints. Consequently, it is worth to shed light on the performance of FBMC in multichannel transmission system. The main contribution of our paper is to compensate fiber nonlinearity including self-phase modulation and cross-phase modulation effects using adaptive Volterra equalizer in longhaul FBMC system based on a 6 × 20 Gb / s in wavelength-division multiplexing scheme over 100 km × 30 spans of single-mode fiber (SMF). The impacts of channel spacing, bit rate, and fiber types on system performance are addressed. For a target of bit error rate = 10 − 3, the simulations show that this performance can be reached at −12 dBm of launch power when 5-taps third-order Volterra (TOV) equalizer is used for 12.5 GHz of channel spacing and an improvement of approximately 1 dB is obtained for 7 taps compared with the same equalizer with 3 taps. To further enhance the system performance, standard-SMF is replaced by a new class fiber called pure-silica-core fiber with large effective area, which exhibits a gain of almost 1.3 and 1 dB for 3 and 5 taps, respectively. The complexity burden of the TOV filter is also discussed.

中文翻译：

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基于滤波器组多载波调制的多通道系统交叉相位调制补偿

预计未来的移动数据网络将达到更高的每位用户数据速率，以适应新兴服务的规范，例如三重播放和移动应用程序。研究人员正在开展他们的工作，通过设计具有高频谱效率和低带外发射的新波形来解决传统正交频分复用的缺点。在许多其他方面，滤波器组多载波 (FBMC) 是满足这些限制的超 5G 的有吸引力的候选者。因此，值得阐明 FBMC 在多通道传输系统中的性能。我们论文的主要贡献是在基于 6 × 20 Gb/s 波分复用方案的长距离 FBMC 系统中使用自适应 Volterra 均衡器补偿光纤非线性，包括自相位调制和交叉相位调制效应超过 100 km × 30单模光纤 (SMF) 的跨度。解决了信道间隔、比特率和光纤类型对系统性能的影响。对于误码率 = 10 − 3 的目标，仿真表明，当 5 抽头三阶 Volterra (TOV) 均衡器用于 12.5 GHz 的信道间隔和一个与具有 3 个抽头的相同均衡器相比，7 个抽头获得了大约 1 dB 的改进。为了进一步提升系统性能，标准 SMF 被一种称为纯硅芯光纤的新型光纤所取代，该光纤具有大有效面积，3 和 5 个抽头的增益分别接近 1.3 和 1 dB。还讨论了 TOV 过滤器的复杂性负担。