www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

USEUROPEAFRICAASIA 中文雙語Fran?ais
Business
Home / Business / Technology

Internet access through lightbulbs achieved

Xinhua | Updated: 2013-10-17 14:16

SHANGHAI -- Successful experiments by Chinese scientists have indicated the possibility of the country's netizens getting online through signals sent by lightbulbs (LiFi), instead of WiFi.

Four computers under a one-watt LED lightbulb may connect to the Internet under the principle that light can be used as a carrier instead of traditional radio frequencies, as in WiFi, said Chi Nan, an information technology professor with Shanghai's Fudan University, on Thursday.

A lightbulb with embedded microchips can produce data rates as fast as 150 megabits per second, which is speedier than the average broadband connection in China, said Chi, who leads a LiFi research team including scientists from the Shanghai Institute of Technical Physics of the Chinese Academy of Sciences.

With LiFi cost-effective as well as efficient, netizens should be excited to view 10 sample LiFi kits that will be on display at the China International Industry Fair that will kick off on Nov 5 in Shanghai.

The current wireless signal transmission equipment is expensive and low in efficiency, said Chi.

"As for cell phones, millions of base stations have been established around the world to strengthen the signal but most of the energy is consumed on their cooling systems," she explained. "The energy utilization rate is only 5 percent."

Compared with base stations, the number of lightbulbs that can be used is practically limitless. Meanwhile, Chinese people are replacing the old-fashioned incandescent bulbs with LED lightbulbs at a fast pace.

"Wherever there is an LED lightbulb, there is an Internet signal," said Chi. "Turn off the light and there is no signal."

However, there is still a long way to go to make LiFi a commercial success.

"If the light is blocked, then the signal will be cut off," said Chi.

More importantly, according to the scientist, the development of a series of key related pieces of technology, including light communication controls as well as microchip design and manufacturing, is still in an experimental period.

The term LiFi was coined by Harald Haas from the University of Edinburgh in the UK and refers to a type of visible light communication technology that delivers a networked, mobile, high-speed communication solution in a similar manner as WiFi.

Most Viewed in 24 Hours
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
 
主站蜘蛛池模板: 毛片网站在线 | 美女黄页网站免费进入 | 国产高清一级毛片在线不卡 | 亚洲国产成人久久一区二区三区 | 国产黄色小视频在线观看 | 国产精品自在欧美一区 | 免费欧美一级片 | 国产精品一 | 欧美精品久久久久久久影视 | 亚洲精品久久久久中文 | 国产免费一级在线观看 | 欧美日韩精品一区二区在线线 | 怡红院免费播放全部视频 | 亚洲免费在线观看 | 成年男女免费视频网站 | 国产精品欧美亚洲韩国日本不卡 | 国产香蕉成人综合精品视频 | 午夜国产片 | 精品一区二区三区三区 | 免费一级毛片女人图片 | 欧美一区二区在线观看免费网站 | 美女拍拍拍爽爽爽爽爽爽 | 毛片a片免费观看 | 99精品热女视频专线 | 亚洲国产激情一区二区三区 | 精品视频一区二区三区免费 | 国产精品99久久99久久久看片 | 国产成人福利美女观看视频 | 日本国产一区二区三区 | 免费观看成年人视频 | 色综合久久88色综合天天提莫 | 亚洲一区中文字幕在线 | 亚洲www.| 国产一级片视频 | 国产成人精品本亚洲 | 亚州精品视频 | 伊人青 | 精品亚洲成a人在线播放 | 亚洲女视频 | 欧美精品成人久久网站 | 国产日韩高清一区二区三区 |