Abstract We propose a novel method of THz 4-ary pulse amplitude modulation (PAM-4) signal generation by a modulator driven by binary scheme with different driving voltages without a digital-to-analog converter (DAC). We experimentally demonstrate the transmission over 1-m wireless link employing 4-GBaud PAM-4 signal at 400–450-GHz in the photonics aided wireless terahertz-wave system. A cost-effective solution to THz PAM-4 signal generation is proposed with both low power consumption and simple configuration.

中文翻译：

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由具有不同驱动电压的二进制方案驱动的调制器产生的太赫兹 PAM-4 信号

摘要 我们提出了一种由具有不同驱动电压的二进制方案驱动的调制器生成太赫兹 4 进制脉冲幅度调制 (PAM-4) 信号的新方法，无需数模转换器 (DAC)。我们通过实验证明了在光子辅助无线太赫兹波系统中使用 4-GBaud PAM-4 信号在 400-450-GHz 的 1-m 无线链路上的传输。提出了一种具有低功耗和简单配置的低成本太赫兹 PAM-4 信号生成解决方案。