Featured Research

from universities, journals, and other organizations

Piping wireless into the home

Date:
April 6, 2010
Source:
Optical Society of America
Summary:
Besides carrying digital data, optical fibers can also transmit radio signals for wireless communication. So-called "radio-over-fiber" technology has been used to provide access to radio dead zones, but new research is looking into using this technology to broadcast wireless closer to home.

Besides carrying digital data, optical fibers can also transmit radio signals for wireless communication. So-called "radio-over-fiber" technology has been used to provide access to radio dead zones, but new research is looking into using this technology to broadcast wireless closer to home.

Radio over fiber (RoF) modulates an optical wavelength in the fiber with a radio signal. This solves the attenuation problem during transport of the signal, while allowing the centralization of signal generation and processing equipment. A wireless signal can be simply relayed down the fiber to remote antennas that cost relatively little to install and should be immune to upgrades. RoF is already being used to transmit wireless signals into hard to reach areas like tunnels and stadiums.

In his talk, Mikhail Popov of Acreo AB in Sweden reviews options for taking RoF into homes and buildings along the optical access (PON) infrastructure, as part of a general trend toward merging wired and wireless communication. Fiber in this case would already be carrying Internet traffic, but it could also carry cell phone conversations transmitted over a remote antenna installed in the premises. In a multi-user scenario, the radio signals would pass directly onto the fiber without any processing. However, for a single home, it would make more sense to set up a "femtonode" that converts the radio waves from wireless devices into Internet data and uses the home Internet connection to connect to other mobile users. In any case, this network sharing could provide indoor wireless coverage at a fraction of the cost of relying solely on outdoor base stations, Popov says.

In the future, wireless home networks may be built on an RoF skeleton. As of now, most homes and businesses use WiFi to connect to laptops, but soon TVs and other media devices may need a wireless hook-up. One way to get more bandwidth is to trade WiFi for ultra-wideband (UWB), which can support data rates that are 1,000 times faster. The trouble is that UWB can only travel approximately 10 meters and is unable to penetrate walls, so there needs to be a way to distribute the signal throughout a house or building.

One solution is to use optical fibers. In a separate talk, Benoit Charbonnier of R&D Orange FT Group in France will describe a UWB RoF network that he and his colleagues have built. Their design calls for the UWB signal being transmitted and received by access points in each room. These access points simply relay the wireless signal over the fiber network to a central hub that down-converts the radio frequency to facilitate processing. This network architecture allows all the hardware to be transparent to whatever wireless products are being used in the home. Charbonnier will present recent test results that show his team's RoF network can distribute a 3 Gbit/s signal with good fidelity.

The research is being presented at the Optical Fiber Communication Conference and Exposition/National Fiber Optic Engineers Conference (OFC/NFOEC) -- the world's largest international conference on optical communication and networking -- from March 21-25 at the San Diego Convention Center.


Story Source:

The above story is based on materials provided by Optical Society of America. Note: Materials may be edited for content and length.


Cite This Page:

Optical Society of America. "Piping wireless into the home." ScienceDaily. ScienceDaily, 6 April 2010. <www.sciencedaily.com/releases/2010/03/100315230048.htm>.
Optical Society of America. (2010, April 6). Piping wireless into the home. ScienceDaily. Retrieved July 29, 2014 from www.sciencedaily.com/releases/2010/03/100315230048.htm
Optical Society of America. "Piping wireless into the home." ScienceDaily. www.sciencedaily.com/releases/2010/03/100315230048.htm (accessed July 29, 2014).

Share This




More Matter & Energy News

Tuesday, July 29, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Baluchistan Mining Eyes an Uncertain Future

Baluchistan Mining Eyes an Uncertain Future

AFP (July 29, 2014) Coal mining is one of the major industries in Baluchistan but a lack of infrastructure and frequent accidents mean that the area has yet to hit its potential. Duration: 01:58 Video provided by AFP
Powered by NewsLook.com
Easier Nuclear Construction Promises Fall Short

Easier Nuclear Construction Promises Fall Short

AP (July 29, 2014) The U.S. nuclear industry started building its first new plants using prefabricated Lego-like blocks meant to save time and prevent the cost overruns that crippled the sector decades ago. So far, it's not working. (July 29) Video provided by AP
Powered by NewsLook.com
Lithium Battery 'Holy Grail' Could Provide 4 Times The Power

Lithium Battery 'Holy Grail' Could Provide 4 Times The Power

Newsy (July 28, 2014) Stanford University published its findings for a "pure" lithium ion battery that could have our everyday devices and electric cars running longer. Video provided by Newsy
Powered by NewsLook.com
The Carbon Trap: US Exports Global Warming

The Carbon Trap: US Exports Global Warming

AP (July 28, 2014) AP Investigation: As the Obama administration weans the country off dirty fuels, energy companies are ramping-up overseas coal exports at a heavy price. (July 28) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins