新技术采用白光LED产生的可见光进行室内传输，可达到100Mbit/s数据传输率

西门子成功实现了在100 Mbit/s带宽下使用可见光传输数据。该技术可用于补充现有的无线局域网的实现方法。

西门子的研究人员采用数字调制的方案，白光LED作为发射机，图像检波器作为接收机来实现这一传输。该公司并没有提供白光LED，图像检波和调制技术的细节。数据信号在实验室条件下传输超过了一米的距离。

因为这项数据传输技术需要在直接可视的前提条件下进行，所以还不能取代现有基于射频的无线局域网技术，发言人解释说。不过考虑到越来越短缺的无线通信频带的背景，基于可见光的传输技术对家庭无线网络实现将是一个很好的补充。为了保证通视性可以将双工收发器嵌入到天花板的照明灯上。

该项研究与欧盟委员会根据欧盟框架计划7（FP7）共同创办的Omega项目一起进行。在2010年之前IEEE有望制定调制和其他技术细节的标准。据称韩国三星也是该技术的支持者。

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White LED transmits data at 100 Mbit/s

Researchers at Siemens Corporate Research have succeeded to transmit data at a bandwidth of 100 Mbit/s using visible light. The technology could be used to supplement current WLAN approaches.

The Siemens researchers used a white LED as transmitter, using a digital modulation scheme. A photo detector served as receiver. The company did not provide technical details as to LED, photo detector and the modulation process. The signals were transmitted over a distance of 1 meter under laboratory conditions.

Since direct intervisibility is a precondition for this type of data transmission, it does not aim at replacing existing radio-based WLAN technologies, a spokesperson explained. Against the background of an increasing shortage of radio frequencies however, a light-based transmission technology would be a good supplement to wireless home networks. Two-way transceivers could be integrated into ceiling lamps in order to assure intervisibility.

The research was conducted within the Omega project, co-founded by the European Commission under EU Framework Program 7 (FP7). The program runs until December 2010. Before the end of this period, the research partners intend to establish an IEEE standard defining modulation schemes and other technical details. Korean electronics provider Samsung is said to be a driving force for the standardization of the technology.