0


宽带通信的光无线技术

Optical Wireless Technologies for Broadband Communications
课程网址: http://videolectures.net/kolokviji_leitgeb_owtbc/  
主讲教师: Erich Leitgeb
开课单位: 格拉茨技术大学
开课时间: 2010-05-18
课程语种: 英语
中文简介:
今天的信息交换取决于电信网络中数据,语音和多媒体的传输。光无线宽带通信是解决新兴宽带接入市场最有前途的方法之一。它提供低启动和运营成本,高安全性,快速部署,高带宽光纤带宽,无需许可证。另一方面,光学无线链路会受到雾和大气湍流的严重影响。然而,光学无线通信,也被称为自由空间光通信,将在未来的信息高速公路中发挥重要作用.TU Graz的研究小组Optikom负责光通信的研究和开发,特别强调自由空间光学( FSO)。它参与了几个国家和国际项目,包括欧盟卓越网络SatNEx,几个ESA项目,以及与FSO系统的信道建模相关的COST IC0802行动。该小组目前正在研究如何通过新的混合RF FSO系统设计来提高FSO系统的可靠性,考虑到不同的天气和大气条件,新的调制和编码方案以及不同的分集技术。
课程简介: Today's information exchange depends on the transmission of data, voice and multimedia across the telecommunication networks. Optical wireless broadband communication represents one of the most promising approaches for addressing the emerging broadband access market. It offers low start-up and operational costs, high security, rapid deployment, high fibre-like bandwidths where no licence is needed. On the other side optical wireless links can be severely affected by fog and atmospheric turbulence. However, the optical wireless communications, also refered to as free space optical communications, will play a significant role in future information superhighways. The research group Optikom at TU Graz deals with the research and development of optical communications with special emphasis on Free Space Optics (FSO). It participates in several national and international projects, including EU Network of Excellence SatNEx, several ESA projects, and COST IC0802 action related to channel modelling for FSO systems. The group is currently investigating how to increase the reliability of FSO systems by new hybrid RF-FSO system design, considering different weather and atmospheric conditions, new modulation and coding schemes and different diversity techniques.
关 键 词: 信息交换; 电信网络; 光无线宽带
课程来源: 视频讲座网
最后编审: 2019-05-12:lxf
阅读次数: 35