国产热热热精品,亚洲视频久久】日韩,三级婷婷在线久久,99人妻精品视频,精品九热人人肉肉在线,AV东京热一区二区,91po在线视频观看,久久激情宗合,青青草黄色手机视频

We have launched E-mail Alert service,subscribers can receive the latest catalogues free of charge

 
 
You Are Here: Home > Reports

Typical Cases of High-speed Railway IC Technology at Home and Abroad(Special Issues, No 70, 2015)

2016-02-18

By Cheng Xiusheng, Chen Longquan & Kong Deming, Research Team on “Roadmap for the Development of China’s High-speed Railway IC Technology”, Information Center, DRC

Research Report, Special Issues, No 70, 2015 (Total NO. 1473) 2015-12-31

Abstract: The application of train’s high-speed movement makes it difficult for vehicle-ground wireless communication to reach satisfying speed and reliable access rate. Therefore, there are a great number of researches concerning transmission medium, access method, and distribution of base station, etc. both at home and abroad. Among them, Japan’s high-speed railway and China’s Taiwan high-speed railwayhave made typical pilot practices. Japan’s high-speed railwayrealized vehicle-ground wireless communication mainly through the leaky cable wireless access system, but the cable process has a high requirement, and its initial cost is too high, which is not suitable for large-scale laying. China’s Taiwan high-speed railwayuses a combination of WiMAX access and wireless transmission technology. Wireless city technology based on wireless Mesh network and WiMAX technology is also a development direction of high-speed railway wireless communications technology. With the rapid development of high-speed railway both at home and abroad, the common issue facing various countries is how to ensure the safety of train operation under the overall increase of high-speed railway wireless bandwidth access. This report enumeratesrelevant cases of existing high-speed wireless communication technology at home and abroad, in the hope of exploring a reasonable and feasible high-speed wireless broadband connection access.

Key words: wireless city, Shinkansen(also known as Bullet Train or Super Express), Taiwan high-speed railway

 
香港 | 外汇| 芦山县| 轮台县| 九龙县| 铜鼓县| 金湖县| 合水县| 临清市| 琼中| 邹平县| 英超| 珠海市| 博客| 十堰市| 塘沽区| 益阳市| 平泉县| 甘洛县| 万荣县| 英山县| 吴桥县| 邵阳市| 聂荣县| 康保县| 如皋市| 宝丰县| 恩平市| 湘西| 平顺县| 缙云县| 莱阳市| 庆云县| 应城市| 武鸣县| 琼结县| 隆德县| 岫岩| 西盟| 根河市| 本溪|