摘要
随着各种多媒体业务的发展,对更高信道容量、更广服务覆盖范围以及宽带无线接入系统的强烈需求,使得基于光纤的无线信号传输(ROF)迅速发展起来。一些新型的技术如相干技术、多边带技术、多输入多输出(MIMO)技术、正交频分复用(OFDM)技术等,在ROF中的理论研究与应用也日趋完善,将其应用到射频无源光网络(RPON)系统中有望解决目前ROF接入的技术瓶颈,并改善ROF系统的性能。讨论和分析了这些新技术的原理,以及将其应用到ROF中的优缺点,以期为未来的研究提供一些参考。
With the development of multimedia services,demands of higher channel capacity,wider service coverage and broadband wireless access advance radio over fiber(ROF) technology rapidly.Meantime,some new technologies,such as coherent technology,multiband technology,multiple input multiple output(MIMO),orthogonal frequency division multiplexing(OFDM) and so on,are introduced and being optimized in ROF system.Employing such new technologies in ROF system,promises to solve the present technological bottlenecks in radio over passive optical network(RPON) and optimize the performance of the whole system.In this paper,the principles of those technologies,how they could be used in ROF system and their advantages as well as shortcomings are discussed and analyzed to provide a reference for future researchs.
出处
《激光与光电子学进展》
CSCD
北大核心
2011年第10期19-27,共9页
Laser & Optoelectronics Progress
基金
国家973计划(2010CB328300)
国家自然科学基金(600837004
60777010)
中国博士后基金项目(20090460593)
上海博士后资助计划面上项目(A类)(10R21411600)
上海市曙光学者基金资助课题
关键词
光通信
射频无源光网络
相干技术
多边带技术
多输入多输出技术
正交频分复用技术
optical communications
radio over passive optical network
coherent technology~ multibandtechnology
multiple input multiple output
orthogonal frequency division multiplexing