Telecom and Networking

High-Dimensional Quantum Encryption Performed in Real-World City Conditions for First Time For the first time, researchers have sent a quantum-secured message containing more than one bit of information per photon through the air above a city. The demonstration showed that it could one day be practical to use high-capacity, free-space quantum communication to create a highly secure link between ground-based networks and satellites, a requirement

How to set up an all open-source IT infrastructure from scratch Hypothetical: You need to set up the IT infrastructure (email, file sharing, etc.) for a new company. No restrictions. No legacy application support necessary. How would you do it? What would that ideal IT infrastructure look like? This presents writer’s ideal setup based on open source software.

Taking Down the Internet Has Never Been Easier—threats/taking-down-the-internet-has-never-been-easier/a/d-id/1329580 Is there a reason why the Internet is so vulnerable? Actually, there are many, and taking steps to remain protected is crucial. On October 29, 1969, two computers linked via telephone exchanged a couple of letters, then crashed.  Fast-forward 48 years, where everything — including the kitchen sink, in the case of smart kitchens — is

IoT: The Interference of Things | EDN–The-Interference-of-Things?utm_content=bufferae2f7&utm_medium=social& The writer of this article declares that IoT stands for “Interference of Things.” Anything else you may have heard is just marketing hype. Relatively few connected gadgets will use wireline communications, the bulk of these devices will connect wirelessly over Bluetooth, Wi-Fi, cellular or something else. Some IoT devices will be designed to limit

Axell Wireless 3009 tear down Such a repeater has the following main features: Axell 3009D - 900 MHz Software Defined Repeater, 25 dBm composite output power, 82 dB Gain, 12 sub-bands, individual gain and ALC, bandwidth settable by software IP65 rated enclosure. Connectors Inside view

Edge computing could push the cloud to the fringe | TechCrunch I can believe in this vision! Edge computing could push the cloud to the fringe Peter Levine believes that cloud computing is soon going to take a back seat to edge computing — and we will very quickly see the majority of processing taking place at the device level. As crazy as that sounds — and

Fiber optic testing updates

Few days ago I read The remarkable evolution of modern fiber-optic connector inspection probes article tells about the current state of fiber inspection. Especially with multifiber connectors such as MPO, MT, and MXC microscopic connector endface dirt and debris cause light reflections and attenuation – the enemies of optimal optical signal transmission. Thankfully there now

Low Energy: Mesh Bluetooth Technology Bluetooth® Low Energy (LE) enables short-burst wireless connections and supports multiple network topologies, including a mesh topology for establishing many-to-many (m:m) device communications. New control and automation systems, from lighting to heating/cooling to security, are about to make homes and offices a lot smarter. Bluetooth mesh networking supports these smart buildings, enabling tens, hundreds

Probing Ethernet cable with an oscilloscope

This article talks about measuring 10 Mbit/s (10Base-T) and 100 Mbit/s (100Base-TX) twisted pair Ethernet signals. Those standards use two wire pairs for the communications and use differential signaling. Differential signaling is a method for electrically transmitting information using two complementary signals. The technique sends the same electrical signal as a differential pair of signals,

A Photon Has Been Sent To Space Using Quantum Teleportation | IFLScience Last month, Chinese researchers showed that quantum communication between Earth and space is possible, and now they have used the tech to send a photon to space using quantum teleportation. As this research shows, to create a truly global network for quantum communication, we will need quantum satellites.