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首页> 外文会议>Conference on Microwave and Terahertz Photonics; 20040429-20040430; Strasbourg; FR >Optical frequency up-conversion in multimode and single-mode fibre radio systems
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Optical frequency up-conversion in multimode and single-mode fibre radio systems

机译：多模和单模光纤无线电系统中的光频率上变频

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摘要

Using a novel optical frequency multiplication technique, microwave signal carriers up to 20-GHz are delivered to a significantly simplified remote radio access unit fed by a multimode fibre link having modal bandwidth below 1-GHz, as well as standard single mode fibre. Measurement results show that the remotely generated carriers have very narrow linewidths below 20-Hz, and exhibit much lower phase noise ( < -90 dBc/Hz) than even a commercially available high frequency electronic signal generator. Thus by using optical frequency multiplication, existing in-building silica multimode fibre infrastructure, and the emerging polymer optical fibres may be used to not only transport fixed data services such as gigabit Ethernet but also to transparently distribute in-doors (and for short links), signals of present WLANs as well as future broadband WLAN services leading to significant system-wide cost reduction. It also enables the radio signal processing to be consolidated in a single central site, which is beneficial for advanced signal processing such as needed in multiple-input multiple output (MIMO) systems.
机译：使用一种新颖的光倍频技术，将高达20 GHz的微波信号载波传送到由模式带宽低于1 GHz的多模光纤链路以及标准单模光纤馈入的，大大简化的远程无线电接入单元。测量结果表明，远距离产生的载波在20 Hz以下具有非常窄的线宽，甚至比市售的高频电子信号发生器都具有更低的相位噪声（<-90 dBc / Hz）。因此，通过使用光频倍增技术，现有的室内二氧化硅多模光纤基础设施以及新兴的聚合物光纤不仅可以用于传输固定数据服务（例如千兆以太网），而且可以透明地分布在室内（并用于短链路） ，当前WLAN以及将来的宽带WLAN服务的信号，从而可显着降低系统范围的成本。它还使无线电信号处理能够整合到单个中心站点中，这对于诸如多输入多输出（MIMO）系统所需的高级信号处理是有益的。

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