Tag Archives: Data transmittion

Data cable links Tokyo to Singapore

The 7,800km Asia Submarine-cable Express (ASE) connects Japan, Malaysia, Singapore and the Philippines. This is a high-speed undersea data cable which transfers data via an optical fibre system at 40 gigabits per second, and is three milliseconds faster than any other cable between Tokyo and Singapore.

So-called “high-frequency trades”, controlled by computers, involve making what may be hundreds of thousands of transactions in less than a second – all determined by a program that tracks market conditions. Even though the increase in speed may not sound significant, it could prove critical to financial trades made out of the region.

With banks and hedge funds competing against each other, the size of the profit or loss can come down to a matter of beating the competition by a fraction of a second, according to Ralph Silva, a strategist at Silva Research Network.

“High frequency trading is basically computer trading – you program a set of rules and as events happen – the computer decides buy or sell commands,” he said.

“As all incoming data is received by all banks at the same time, and because the computers are all the same with the same speed of processors, the length of time the command takes to get to the exchange makes a big difference.”

“So if all banks come to the same trading decision at the same time, the one to get the transaction to the master computer first wins.”

The data transfer capacity of 40Gbps is the equivalent of downloading a high-resolution DVD in about two seconds. Due to the decision to make the cable as straight as possible, the time to get information from one end to the other was reduced to 65 milliseconds.

As many comparable undersea cables were damaged by powerful earthquakes that hit Japan in March 2011 and Taiwan in December 2006, a lot of attention was paid to the actual location of the new cable.

Hiroyuki Matsumoto of NTT, one of the four partners involved in the project, stated that the area around Taiwan was avoided as earthquakes in this area are common. A route near the Philippines was chosen instead making the cable safer and more reliable.

 

 

 

Transmitters that cost a penny to print

Researchers in Korea have devised a cheap way of transmitting data from objects to mobile phones when swiped with the use of Near Field Communication, which is already used in some devices allowing shoppers to make card payments by touch.

The researchers from Sunchon National University and the Paru Printed Electronics Research Institute have printed small rectennas (a cross between an antenna and an AD/DC current converter) onto plastic foils using electronic inks that use radio waves emitted a smartphone to transmit data to it from a tiny chip.

“What is great about this technique is that we can also print the digital information onto the rectenna, meaning that everything you need for wireless communication is in one place,” co-author of the study Gyoujin Cho told the IoP.

The advantage of the rectenna over current technology is lower cost, since the research team produced a roll-to-roll printing process with high throughput in an environmentally friendly manner. Additionally, they can integrate many extra functions without huge extra cost in the printing process.

rectenna

The printed rectennas cost less than one penny per unit to produce and could be used as an alternative to QR codes. In general, QR codes are rather limited in terms of usage. They can only be used for one thing at a time and can only contain so much data.

The rectennas will make their debut in the journal Nanotechnology, published by the Institute of Physics (IoP) this month.