Evaluation of effects of MZM nonlinearity on QAM and OFDM signals in RoF transmitter

2008 International Topical Meeting on Microwave Photonics jointly held with the 2008 Asia-Pacific Microwave Photonics Conference Pub Date : 2008-11-05 DOI:10.1109/MWP.2008.4666642

H. Yang, J. Zeng, Y. Zheng, H. Jung, B. Huiszoon, J. V. van Zantvoort, E. Tangdiongga, A. Koonen

引用次数: 33

Abstract

We present, both numerically and experimentally, the nonlinearity effect of the intensity modulator in RoF transmitters through the comparison between single-carrier QAM and multi-carrier OFDM signals. The acceptable RF power level of the multi-carrier OFDM signal is 2 dB less compared with the single-carrier signal for the same EVM penalty of 1%, indicating the degradation due to inter-modulation products caused by the modulator nonlinearity for OFDM RoF systems.

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RoF发射机中MZM非线性对QAM和OFDM信号影响的评价

通过对单载波QAM和多载波OFDM信号的比较，从数值和实验两方面研究了强度调制器在RoF发射机中的非线性效应。在相同EVM损失为1%的情况下，多载波OFDM信号的可接受射频功率水平比单载波信号低2 dB，这表明OFDM RoF系统由于调制器非线性引起的互调产物而出现退化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2008 International Topical Meeting on Microwave Photonics jointly held with the 2008 Asia-Pacific Microwave Photonics Conference

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