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Generation of pure electrical quadrature amplitude modulation with photonic vector modulator

机译:用光子矢量调制器生成纯正交振幅调制

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摘要

A photonic vector modulator architecture for generating pure quadrature amplitude modulation (QAM) signals is presented. An electrical quadrature-modulated signal at microwave-millimeter-wave frequencies is generated from its corresponding baseband in-phase (I) and quadrature (Q) components. In the proposed scheme, no electrical devices apart from the electrical tone oscillator are needed in the generation process. In addition, the purity of the generated signal is increased, and the hardware requirements are reduced when compared with previously proposed architectures so a highly compact low-cost architecture can be implemented. A pure 1.25 Gbit/s 4-QAM signal has been experimentally generated at a 42 GHz carrier frequency.
机译:提出了一种用于产生纯正交幅度调制(QAM)信号的光子矢量调制器架构。微波毫米波频率的电正交调制信号是从其相应的基带同相(I)和正交(Q)分量生成的。在提出的方案中,在生成过程中不需要除电音振荡器之外的任何电子设备。另外,与先前提出的架构相比,所产生的信号的纯度提高了,并且硬件需求降低了,因此可以实现高度紧凑的低成本架构。已经在42 GHz载波频率上通过实验生成了纯1.25 Gbit / s的4-QAM信号。

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