RoF technology holds promise for wireless and wireline on a single platform

Oct 16, 2012
Wireless and wireline on a single platform
Credit: Thinkstock

EU-funded scientists experimentally and theoretically validated technology for the future convergence of wireless and wireline communications into a common infrastructure.

The information revolution demands continuously increasing speed and reliability with virtually limitless access. The next step in the evolutionary process is a convergence of wireless and wireline transmission into a common infrastructure.

Phase-modulated radio-over-fibre (RoF) technology is an important candidate for implementing multi-channel (via so-called wavelength-division multiplexing, or WDM) wireless-wireline access networks.

RoF integrates fibre optic networks with wireless ones. are transported from a radio base station to a remote antenna via and then radiated through the air via end users' mobile stations.

are part of the that consists of all possible in the form of photons. The photons travel in waves defined by peaks and troughs, much as water rippling out from a stone thrown in a pond.

The distance from one peak to another (or one trough to another) is the wavelength. The distance from centre to peak is the amplitude which is related to the intensity of the light. The phase of a signal is the position of the wave at a certain time relative to a reference – imagine ripples spreading out in a pond passing by a stationary object such as a reed.

Modulating data to be transmitted based on the phase of the carrier signal (phase modulation) has important benefits compared to conventional intensity modulation.

set out to experimentally and theoretically evaluate the performance of multi-channel phase-modulated RoF optical links in transmission of wireless-wireline signals.

With EU funding of the 'WDM -modulated radio-over-fiber systems' (Woprof) project, investigators did so, comparing performance to that of conventional intensity-modulated RoF links. They created a phase-modulated RoF link and conducted convergence experiments with broadband wireline services and high-speed wireless signals.

Finally, the team also identified a new wireless technology for short-range in-home applications that has been met with great enthusiasm worldwide.

Woprof results have advanced the communications sector toward convergence of wireless and wireline systems into a common infrastructure. Along the way, the Woprof team may have come up with tomorrow's fastest technology to transfer videos and pictures from a cell phone to a PC.

Explore further: High court to hear dispute about TV over Internet

add to favorites email to friend print save as pdf

Related Stories

Recommended for you

Hand out money with my mobile? I think I'm ready

Apr 17, 2014

A service is soon to launch in the UK that will enable us to transfer money to other people using just their name and mobile number. Paym is being hailed as a revolution in banking because you can pay peopl ...

Quantenna promises 10-gigabit Wi-Fi by next year

Apr 16, 2014

(Phys.org) —Quantenna Communications has announced that it has plans for releasing a chipset that will be capable of delivering 10Gbps WiFi to/from routers, bridges and computers by sometime next year. ...

Tech giants look to skies to spread Internet

Apr 16, 2014

The shortest path to the Internet for some remote corners of the world may be through the skies. That is the message from US tech giants seeking to spread the online gospel to hard-to-reach regions.

Wireless industry makes anti-theft commitment

Apr 16, 2014

A trade group for wireless providers said Tuesday that the biggest mobile device manufacturers and carriers will soon put anti-theft tools on the gadgets to try to deter rampant smartphone theft.

User comments : 0

More news stories

TCS, Mitsubishi to create new Japan IT services firm

India's biggest outsourcing firm Tata Consultancy Services (TCS) and Japan's Mitsubishi Corp said Monday they are teaming up to create a Japanese software services provider with annual revenues of $600 million.

Finnish inventor rethinks design of the axe

(Phys.org) —Finnish inventor Heikki Kärnä is the man behind the Vipukirves Leveraxe, which is a precision tool for splitting firewood. He designed the tool to make the job easier and more efficient, with ...

Atom probe assisted dating of oldest piece of earth

(Phys.org) —It's a scientific axiom: big claims require extra-solid evidence. So there were skeptics in 2001 when University of Wisconsin-Madison geoscience professor John Valley dated an ancient crystal ...