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Experimental demonstration of a real-time PAM-4 Q-band RoF system based on CMMA equalization and interleaved RS code

机译:基于CMMA均衡和交错RS码的实时PAM-4 Q波段RoF系统的实验演示。

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摘要

In this paper, we experimentally demonstrated a complete real-time 4-level pulse amplitude modulation (PAM-4) Q-band radio-over-fiber (RoF) system with optical heterodyning and envelope detector (ED) down-conversion. Meanwhile, a cost-efficient real-time implementation scheme of cascaded multi-modulus algorithm (CMMA) equalization is proposed in this paper. By using the proposed scheme, the CMMA equalization is applied in the system for signal recovery. In addition, to improve the transmission performance of the system, an interleaved Reed-Solomon (RS) code is applied in the real-time system. Although there is serious power impulse noise in the system, the system can still achieve a bit error rate (BER) at below 1 x 10(-7) after 25 km standard single mode fiber (SSMF) transmission and 1-m wireless transmission.
机译:在本文中,我们通过实验证明了一个完整的实时4级脉冲幅度调制(PAM-4)Q波段带光纤无线(RoF)系统,具有光学外差技术和包络检波器(ED)下变频技术。同时,提出了一种具有成本效益的实时级联多模算法均衡实现方案。通过使用所提出的方案,将CMMA均衡应用于系统中以进行信号恢复。另外,为了提高系统的传输性能,在实时系统中应用了交错的里德-所罗门(RS)码。尽管系统中存在严重的功率脉冲噪声,但在25 km标准单模光纤(SSMF)传输和1-m无线传输后,系统仍可以在1 x 10(-7)以下实现误码率(BER)。

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