Abstract In this paper, a novel and relatively simple scheme for generation of high-quality 16QAM-modulated multi-carrier vector millimeter-wave (mm-wave) was proposed, which was only based on a single Mach–Zehnder modulator (MZM), while the precoding technique and optical filter were not needed. At the transmitter, electrical dual single sideband (SSB) signals were generated by a digital signal processing (DSP) module, in which the frequency of modulated signals could be adjusted flexibly. Employing the generated dual-SSB signal to drive a push–pull MZM biased at Quad point, optical dual-SSB 16-QAM OFDM signals were obtained. After a photodiode, higher frequency OFDM vector mm-wave signals were achieved by beating. Based on the proposed method, a simulation platform of generating 30 GHz 16QAM OFDM vector mm-wave signals was set up and the performance of the generated OFDM vector mm-wave was analyzed. The results show that the bit-error ratio of the transmission system were less than hard decision forward-error correction threshold of 3 . 8 × 1 0 − 3 , which demonstrates that the generation of OFDM vector signal can work well.

中文翻译：

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基于单MZM的16QAM-OFDM矢量毫米波信号生成方案，无需滤光片和预编码

摘要 本文提出了一种新颖且相对简单的生成高质量 16QAM 调制多载波矢量毫米波 (mm-wave) 的方案，该方案仅基于单个马赫-曾德调制器 (MZM)，而不需要预编码技术和光学滤波器。在发射端，电双单边带（SSB）信号由数字信号处理（DSP）模块产生，其中调制信号的频率可以灵活调整。利用生成的双 SSB 信号驱动偏置在四点的推挽 MZM，获得了光学双 SSB 16-QAM OFDM 信号。在光电二极管之后，通过拍频获得更高频率的 OFDM 矢量毫米波信号。基于所提出的方法，搭建了30 GHz 16QAM OFDM矢量毫米波信号生成仿真平台，对生成的OFDM矢量毫米波信号进行了性能分析。结果表明，传输系统的误码率小于硬判决前向纠错门限3。8 × 1 0 − 3 ，这表明OFDM矢量信号的生成可以很好地工作。