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基于强度调制和相位调制的ROF系统比较
徐 冠, 武向农, 张 静, 殷 业, 朱苏磊, 张 谦
上海师范大学
摘要:
基于现有实现载波抑制毫米波传输下行链路信号的实验,研究并比较了以下两种ROF系统:一种是利用强度调制技术产生载波抑制毫米波的传输系统,另一种是利用相位调制技术产生边带传输下行链路信号.通过仿真实验证明了系统的有效性和可靠性,并根据光谱图、Q值参数、眼图和误码率曲线来对比研究两者传输性能的优缺点.
关键词:  ROF系统  载波抑制  强度调制  相位调制
DOI:
分类号:
基金项目:上海师范大学项目(SK20123,DYL201007);上海市自然科学基金(11ZR1426600);国家自然科学基金(61101209)
The performances comparison of ROF systems based on intensity modulation and phase modulation
XU Guan, WU Xiangnong, ZHANG Jing, Yin Ye, ZHU Sulei, ZHANG Qian
College of Information,Mechanical and Electrical,Shanghai Normal University
Abstract:
According to the researches of transmitting downlink signal based on optical carrier suppression, we demonstrate two different ROF systems, one is based on intensity modulation to suppress the optical carrier, another is using phase modulation to generate sidebands to transmit the downlink signal. Simulation results prove the validity and reliability of the systems. A comparative study is carried out to the advantages and disadvantages of the transmission performance of both systems according to the spectra, the parameter of Q value, eye diagrams and BER curve, meanwhile the effectiveness and reliability of system are verified.
Key words:  ROF system  optical carrier suppression  intensity modulation  phase modulation