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Submission + - TeraHertz Transmitter Can Push 100Gbps+ Wireless Speeds via a Single Channel

Mark.JUK writes: A team of Japanese scientists working jointly for Hiroshima University and Panasonic have managed to develop a TeraHertz (THz) transmitter that is capable of transmitting digital data at a rate of 105Gbps (Gigabits per second) over a single channel using the frequency range from 290GHz to 315GHz. Previously it was only possible to achieve such speeds by harnessing multiple channels at the same time.

Prof. Minoru Fujishima, Hiroshima University, said: “This year, we developed a transmitter with 10 times higher transmission power than the previous version’s. This made the per-channel data rate above 100 Gbit/s at 300 GHz possible. We usually talk about wireless data rates in megabits per second or gigabits per second. But we are now approaching terabits per second using a plain simple single communication channel."

The team envisages a future where such technology could power Satellite and Mobile communications, although this is still a distant dream as many such technologies struggle to send their signals more than a few metres. Boosting the power can overcome some of the problems, but it also makes related hardware very difficult to convert into a portable form.

Submission + - 34Gbps WiFi? Japanese Scientists Make it Possible via TeraHertz Wireless

Mark.JUK writes: A team of researchers from the Tokyo Institute of Technology have managed to push WiFi style data transmissions to 34Gbps (Gigabits per second) by harnessing the 500GHz band of radio spectrum (TeraHertz), not least by improving direct intensity modulation and the wireless data transmission characteristics of terahertz-oscillating resonant tunnelling (RTD).

One of the problems with getting higher speeds to work in such a setup has been the low cut-off frequency of the modulation (RTD oscillator) at 1.5GHz, which limits the speed to a maximum of 3Gbps. But the team were able to go much faster by cutting out the “parasitic components” of the RTD and improving the cut-off frequency to 15GHz.

Crucially the new setup would work at room temperature and the device size could be made much smaller, which might make using THz frequencies in Smartphones’ a realistic option. Speeds of 1 Terabits per second or faster, over a range of up to 10 metres, are now being targeted.

Submission + - BT and Huawei Deliver Record Breaking 5.6Tbps Over a Single Optical Fibre

Mark.JUK writes: Telecoms operator BT has teamed up with Chinese tech firm Huawei to "break world speed records" in the United Kingdom by successfully transmitting data at 5.6Tbps (Terabits per second) over a single optical fibre running on its trial network between the BT Labs in Adastral Park and the BT Tower in London (England), which beats the previous record of 3Tbps that they set in 2014.

Apparently the network comprised of 28 x 200Gb/s (64GBaud/QPSK) sub-channels, bundled together to provide combined capacity, achieving some of the highest capacity and spectral efficiency ever seen.

Submission + - ITU Give Consent to New 40Gbps Fibre-to-the-Home Broadband Standard

Mark.JUK writes: The International Telecommunication Union has just granted first-stage approval (“consent“) to two new ultrafast Fibre-to-the-Home (FTTH) optical broadband standards. The first (NG-PON2) will support Internet download speeds of 40Gbps (Gigabits per second) and on top of that the new XGS-PON aims to deliver a symmetric 10Gbps service (same upload and download rate).

By comparison the previous XG-PON standard only ensured an asymmetric speed of 10Gbps download and 2.5Gbps upload. Now all we need is computers, Internet services and WiFi networks that can actually harness such performance in the first places.

Submission + - UCL Scientists Push 1.125Tbps Through a Single Coherent Optical Receiver

Mark.JUK writes: A team of researchers working in the Optical Networks Group at the University College London in England claim to have achieved the "greatest information rate ever recorded using a single [coherent optical] receiver", which was able to handle a record data speed of 1.125 Terabits per second (Tbps). The result, which required a 15 sub-carrier 8GBd DP-256QAM super-channel (15 channels of data) and total bandwidth of 121.5GHz, represents an increase of 12.5% relative to the previous record (1Tbps). Now they just need to test it using some long fibre optic cable because optical signals tend to become distorted when they travel over thousands of kilometres.

Submission + - Scientists in Japan Build 100Gbps Wireless Network Using TeraHertz

Mark.JUK writes: A group of Japanese scientists working on a project managed by Hiroshima University claim to have successfully built a TeraHertz (THz) transmitter, which is implemented as a silicon CMOS integrated circuit and can transmit a signal running at 10Gbps per data channel over multiple channels in the 275-305GHz band for a top speed of 100Gbps (Gigabits per second). But crucially nobody has mentioned the distance at which this speed could be achieved, particularly since the THz band isn't likely to have much of a reach. It also sits very close to the region used by lasers.

Submission + - TP-Link Launch First 802.11ad Equipped Wi-Fi Router (4.6Gbps via 60GHz)

Mark.JUK writes: Networking equipment manufacturer TP-Link are today claiming a "world's first" after they unveiled their new Talon AD7200 router, which uses the cutting edge 802.11ad Wi-Fi standard (Qualcomm Atheros chipset) in order to deliver Wireless LAN (WLAN) data speeds of up to 4,600 Megabits per second via the unlicensed 60GHz spectrum band. Mind you the limited range and problematic penetration of solid walls at 60GHz might make it less useful in some homes.

Submission + - World's First 5G Field Trial Delivers Speeds of 3.6Gbps Using sub-6GHz

Mark.JUK writes: Global Chinese ICT firm Huawei and Japanese mobile giant NTT DOCOMO today claim to have conducted the world's first large-scale field trial of future 5th generation (5G) mobile broadband technology, which was able to deliver a peak speed of 3.6Gbps (Gigabits per second).

Previous trials have used significantly higher frequency bands (e.g. 20-80GHz), which struggle with coverage and penetration through physical objects. By comparison Huawei's network operates in the sub-6GHz frequency band and made use of several new technologies, such as Multi-User MIMO (concurrent connectivity of 24 user devices in the macro-cell environment), Sparse Code Multiple Access (SCMA) and Filtered OFDM (F-OFDM).

Assuming all goes well then Huawei hopes to begin a proper pilot in 2018, with interoperability testing being completed during 2019 and then a commercial launch to follow in 2020. But of course they're not the only team trying to develop a 5G solution.

Submission + - Scientists Overcome One of the Biggest Limits in Fibre Optic Networks (ispreview.co.uk)

Mark.JUK writes: Researchers at the University of California in San Diego have demonstrated a way of boosting transmissions over long distance fibre optic cables and removing crosstalk interference, which would mean no more need for expensive electronic regenerators (repeaters) to keep the signal stable. The result could be faster and cheaper networks, especially on long-distance international subsea cables.

The feat was achieved by employing a frequency comb, which acts a bit like a concert conductor; the person responsible for tuning multiple instruments in an orchestra to the same pitch at the beginning of a concert. The comb was used to synchronize the frequency variations of the different streams of optical information (optical carriers) and thus compensate in advance for the crosstalk interference, which could also then be removed.

As a result the team were able to boost the power of their transmission some 20 fold and push data over a “record-breaking” 12,000km (7,400 miles) long fibre optic cable. The data was still intact at the other end and all of this was achieved without using repeaters and by only needing standard amplifiers.

Submission + - The Tiny Camera and Sensors Powered by Stealing from Your WiFi Signals

Mark.JUK writes: A team of scientists working at the University of Washington have demonstrated a tiny camera, battery charger and sensors that can be parasitically powered by stealing electricity from ordinary home WiFi transmissions (at least 300mV of sustained electricity was needed via a DC–DC converter with the lowest threshold) operating in the 2.4GHz band over multiple channels.

The PoWiFi system could in the future also be adapted to suck energy from different bands (e.g. 900MHz, 5GHz etc.) to further improve its capabilities, although doing so could create some interesting new legal questions and or pose some new security risks (e.g. a Power Denial-of-Service Attack).

Submission + - Nokia Networks Demonstrates 5G Mobile Speeds Running at 10Gbps via 73GHz (ispreview.co.uk)

Mark.JUK writes: The Brooklyn 5G Summit appears to have provided a platform for Nokia Networks to demo a prototype of their future 5G (5th Generation) mobile network technology, which they claim can already deliver data speeds of 10 Gigabits per second using millimeter Wave (mmW) frequency bands of 73GHz (7300MHz).

The demo also made use of 2×2 Multiple-Input and Multiple-Output (MIMO) links via single carrier Null Cyclic Prefix modulation and frame size of 100 micro seconds, although crucially no information about the distance of this demo transmission has been released and at 73GHz you'd need quite a dense network in order to overcome the problems of high frequency signal coverage and penetration.

Submission + - UK Scientists Claim 1Tbps Data Speed via Experimental 5G Technology

Mark.JUK writes: A team of Scientists working at the University of Surrey in England claim to have achieved, via an experimental lab test, performance of 1Tbps (Terabit per second) over their candidate for a future 5G Mobile Broadband technology. Sadly the specifics of the test are somewhat unclear, although it's claimed that the performance was delivered by using 100MHz of radio spectrum bandwidth over a distance of 100 metres.

The team, which forms part of the UK Government's 5G Innovation Centre, is supported by most of the country's major mobile operators as well as BT, Samsung, Fujitsu, Huawei, the BBC and various other big names in telecoms, media and mobile infrastructure. Apparently the plan is to take the technology outside of the lab for testing between 2016 and 2017, which would be followed by a public demo in early 2018.

In the meantime 5G solutions are still being developed, with most in the early experimental stages, by various different teams around the world. Few anticipate a commercial deployment happening before 2020 and we’re still a long way from even defining the necessary standard.

Submission + - BT Unveils 1000Mbps Capable G.fast Broadband Rollout for the United Kingdom

Mark.JUK writes: The national telecoms operator for the United Kingdom, BT, has today announced that it will begin a country-wide deployment of the next generation hybrid-fibre G.fast (ITU G.9701) broadband technology from 2016/17, with most homes being told to expect speeds of up to 500Mbps (Megabits per second) and a premium service offering 1000Mbps will also be available.

At present BT already covers most of the UK with hybrid Fibre-to-the-Cabinet (FTTC) technology, which delivers download speeds of up to 80Mbps by running a fibre optic cable to a local street cabinet and then using VDSL2 over the remaining copper line from the cabinet to homes. G.fast follows a similar principal, but it brings the fibre optic cable even closer to homes (often by installing smaller remote nodes on telegraph poles) and uses more radio spectrum (17-106MHz) over a shorter remaining run of copper cable (ideally less than 250 metres).

The reliance upon copper cable means that the real-world speeds for some, such as those living furthest away from the remote nodes, will probably struggle to match up to BT’s claims. Never the less many telecoms operators see this as being a more cost effective approach to broadband than deploying a pure fibre optic / Fibre-to-the-Home (FTTH) network.

Submission + - TWEETHER Project Promises 10Gbps mmW 92-95GHz Based Wireless Broadband (ispreview.co.uk) 1

Mark.JUK writes: A new project called TWEETHER, which is funded by Europe's Horizon 2020 programme, has been setup at Lancaster University (England) with the goal of harnessing the millimetre wave (mmW) radio spectrum (specifically 92-95GHz) in order to deploy a new Point to Multipoint wireless broadband technology that could deliver peak capacity of up to 10Gbps (Gigabits per second). The technology will take 3 years to develop and is expected to help support future 5G based Mobile Broadband networks.

Submission + - Scientists Build 7 Core Fibre Optic Cable for Record Speeds of 255 Tbps

Mark.JUK writes: A team of researchers at the Eindhoven University of Technology (Netherlands) have built a new fibre optic cable with seven cores, which when combined with wavelength division multiplexing (i.e. harnessing the different colors of laser light to carry data) has enabled them to deliver a transmission speed of 255 Terabits per second (Tbps) over a single 1km long link.

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