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World's largest quantum-encrypted network unveiled
News The world's largest quantum-encrypted network has been unveiled in Vienna, providing a glimpse of how data could be transmitted securely in the future. Voice over IP and videoconferencing data is being transmitted over the network which uses...
[October 13, 2008, 9:42]
PAPR Performance of IDFT-Based Uncoded OFDM Signals With Null Subcarriers and Transmit Filtering
White Papers The power spectral density of the transmitted OFDM signal is derived, taking into account the effects of cyclic prefix, windowing, digital-to-analog converter, null-subcarriers, and analog transmit filter.
[April 11, 2007, 1:01]
Wearable Wellness Monitoring Using ECG and Accelerometer Data
White Papers The hardware allows data to be transmitted wirelessly from on-body sensors to a handheld device using Bluetooth. Data is then transmitted to a backend server for analysis using either a wireless internet connection, if available, or a cellular...
[December 22, 2005, 0:01]
Payment Card Industry (PCI) Data Security Standard
White Papers PCI DSS requirements are applicable if a Primary Account Number (PAN) is stored, processed, or transmitted. If a PAN is not stored, processed, or transmitted, PCI DSS requirements do not apply. This paper describes the 12 Payment Card Industry (PCI...
[April 1, 2009, 6:56]
Enabling High Speed Data Communications Over TETRA
White Papers Visual information such as maps, digital pictures and slow motion video can be transmitted over second- and third-generation digital radio networks, but these are too slow when transmitted over current TETRA data.
[August 2, 2005, 6:00]
Computer Security Basics: Encryption
White Papers It's a particularly effective way to protect sensitive information - for example, passwords - that's stored in a computer system, as well as information that's being transmitted over radio or microwave channels and communications lines.
[October 10, 2007, 1:00]
On the Scalability of Hierarchical Hybrid Wireless Networks
White Papers For a three-level network of n1 access points, n2 forwarding nodes and n3 mobile nodes, the paper analyzes throughput in terms of two tiers of packets: those transmitted by mobile nodes (low-tier) and those transmitted by forwarding nodes and...
[August 23, 2007, 1:00]
Voice Over IP and HIPAA Compliance: Why Are There No Standards Set?
White Papers EPHI is the PHI that is maintained in electronic media, transmitted by electronic media, or transmitted and maintained in any other form. The Health Information Portability and Accountability Act of 1996 - HIPAA otherwise known as the Kennedy...
[April 28, 2006, 0:00]
Solar-powered planes for 3G and broadband
News After climbing to 65,000 feet above the Hawaiian island of Kauai, the unmanned Pathfinder-Plus transmitted several hours of third-generation mobile voice, data and video service to the ground, where it was received on a standard NTT DoCoMo 3G...
[July 23, 2002, 14:50]
A Real polite music delivery service
News Real and Backweb have agreed to incorporate the latter's Polite push technology into the RealJukebox player that will allow digital music to be transmitted to a user at times of low PC activity. Backweb's Polite push technology means music is only...
[January 20, 2000, 12:10]
Text of FBI 'Melissa' warning
News The virus is transmitted via an attachment to innocuous e-mail messages transmitted to unsuspecting computer users via the Internet and related networks. National Infrastructure Protection Centre (NIPC) was notified on March 26, 1999, of the...
[March 29, 1999, 8:59]
New technologies in 802.11n review
Reviews Wireless pioneers like Dr Raleigh decided to take advantage of the specific multipath phenomena in which received signals from one transmitting antenna will have different phase, timing or signal-strength characteristics from received signals...
[June 24, 2008, 9:51]
AOL sues over sex-related spam
News The lawsuit seeks an injunction against further spamming and damages, which could include $10 for each unsolicited email or $25,000 for each day a message was transmitted. Representatives for AOL said they could not estimate how many instances of...
[January 4, 2001, 11:48]
Microsoft details Wi-Fi use for 'white spaces'
News Signals transmitted over lower frequencies tend to travel longer distances at slower speeds, while signals transmitted at higher frequencies tend to be faster over shorter distances. Microsoft researchers may have taken a step closer to turning...
[August 20, 2009, 9:39]
Voice over IP is finally coming into its own
News Sound is converted to analogue signals, then digitised (converted from analogue to digital) and then transmitted over the network. If the business has a fixed cost (unlimited access connection to the Internet) calls transmitted over that connection...
[June 4, 2003, 16:29]
Rupert Goodwins' Diary
Blog This might seem to break the ultimate law, that nothing can be transmitted faster than the speed of light. Even if Bertlemann wore his socks a light year apart, this knowledge would be transmitted instantaneously.
[January 13, 2006, 17:05]
Samsung to embed faster Wi-Fi tech
News MIMO is based on 802.11g and 802.11b standards, but it works by allowing two or more distinct signals to be transmitted over the same 802.11 radio channel at the same time with no interference. And because multiple radios are used to send and...
[June 1, 2005, 9:15]
Are your users' PDAs safe from viruses?
News If that virus is written to infect the synchronization software used on certain handhelds, a virus could be transmitted to PDAs. Virus definition updates are downloaded when the user's PC connects to the Internet and are transmitted to the Palm...
[April 22, 2002, 9:21]
BT video streaming spells trouble for 3G
News This switch to a higher frame rate recording means that more data has to be transmitted per second. If the connection rate then drops so that the video is no longer being transmitted as fast as it's being seen, the buffer will begin to empty.
[April 30, 2003, 16:39]
Activating XP
News The Installation ID is then transmitted to Microsoft via the Internet or by you, over the phone. The only information transmitted to Microsoft during activation is the installation ID and, for Office XP and Visio 2002, the name of the country in...
[August 4, 2002, 19:35]
