http://www.sciencedaily.com/news/computers_math/wifi/ Wireless News. Read all about WiFi research from leading research institutes around the world. Full-text, images, free. en-us Wed, 15 Feb 2012 21:05:01 EST Wed, 15 Feb 2012 21:05:01 EST 60 http://www.sciencedaily.com/images/logosmall.gif http://www.sciencedaily.com/news/computers_math/wifi/ For more science articles, visit ScienceDaily. http://www.sciencedaily.com/releases/2012/01/120106164915.htm A revolutionary new technology helps with cyber security. Fri, 06 Jan 2012 16:49:49 EST http://www.sciencedaily.com/releases/2012/01/120106164915.htm http://www.sciencedaily.com/releases/2011/12/111212092751.htm We are at the dawn of the age of IPv6, the Internet protocol that will succeed version 4, experts say. With 340 undecillion available addresses, IPv6 ensures that the Internet can continue growing and offers advantages in terms of stability, flexibility, and simplicity in network administration. Mon, 12 Dec 2011 09:27:27 EST http://www.sciencedaily.com/releases/2011/12/111212092751.htm http://www.sciencedaily.com/releases/2011/10/111013085105.htm Computer scientists in Germany have developed a wireless bicycle brake and demonstrated its efficiency on a so-called cruiser bike. Furthermore, they confirmed the brake system’s reliability through mathematical calculations that are also used in control systems for aircraft or chemical factories. Thu, 13 Oct 2011 08:51:51 EDT http://www.sciencedaily.com/releases/2011/10/111013085105.htm http://www.sciencedaily.com/releases/2011/09/110915131649.htm A new "subconscious mode" for smartphones and other WiFi-enabled mobile devices could extend battery life by as much as 54 percent for users on the busiest networks. Thu, 15 Sep 2011 13:16:16 EDT http://www.sciencedaily.com/releases/2011/09/110915131649.htm http://www.sciencedaily.com/releases/2011/09/110914122658.htm Today's wireless-sensor networks can do everything from supervising factory machinery to tracking environmental pollution to measuring the movement of buildings and bridges. Working together, distributed sensors can monitor activity along an oil pipeline or throughout a forest, keeping track of multiple variables at a time. While uses for wireless sensors are seemingly endless, there is one limiting factor to the technology -- power. A new tiny energy harvester picks up a wider range of vibrations than current designs, and is able to generate 100 times the power of devices of similar size. Wed, 14 Sep 2011 12:26:26 EDT http://www.sciencedaily.com/releases/2011/09/110914122658.htm http://www.sciencedaily.com/releases/2011/09/110906134014.htm Engineering researchers have made a breakthrough that could allow wireless phone companies to double throughput on their networks without adding a single cell tower. The new "full-duplex" technology allows wireless devices like cell phones and electronic tablets to both "talk" and "listen" to wireless cell towers on the same frequency -- something that requires two frequencies today. Tue, 06 Sep 2011 13:40:40 EDT http://www.sciencedaily.com/releases/2011/09/110906134014.htm http://www.sciencedaily.com/releases/2011/08/110822111751.htm Researchers have demonstrated the first wireless security scheme that can protect against "man-in-the-middle" attacks -- but doesn't require a password. Mon, 22 Aug 2011 11:17:17 EDT http://www.sciencedaily.com/releases/2011/08/110822111751.htm http://www.sciencedaily.com/releases/2011/08/110817101939.htm New tests are helping to ensure that wireless safety equipment such as alarm beacons for firefighters and other emergency responders will operate reliably in the presence of other wireless devices. Wed, 17 Aug 2011 10:19:19 EDT http://www.sciencedaily.com/releases/2011/08/110817101939.htm http://www.sciencedaily.com/releases/2011/07/110707131545.htm Researchers have discovered a way to capture energy transmitted by such sources as radio and television transmitters and cell phone networks. By scavenging this ambient energy from the air around us, the technique could provide a new way to power networks of wireless sensors or other devices. Thu, 07 Jul 2011 13:15:15 EDT http://www.sciencedaily.com/releases/2011/07/110707131545.htm http://www.sciencedaily.com/releases/2011/06/110630171715.htm A graduate student has found a way to double the battery life of mobile devices -- such as smartphones or laptop computers -- by making changes to WiFi technology. Thu, 30 Jun 2011 17:17:17 EDT http://www.sciencedaily.com/releases/2011/06/110630171715.htm http://www.sciencedaily.com/releases/2011/06/110627134527.htm New software allows wireless sensor networks to run at much lower energy, according to researchers. The technology could improve efficiency for hurricane and other natural disaster warning systems. Mon, 27 Jun 2011 13:45:45 EDT http://www.sciencedaily.com/releases/2011/06/110627134527.htm http://www.sciencedaily.com/releases/2011/06/110623130933.htm Can a smartphone app enable meaningful, face-to-face conversation? Engineers are trying to find out, with software that helps people locate their friends in a crowd -- and make new friends who share similar interests. Thu, 23 Jun 2011 13:09:09 EDT http://www.sciencedaily.com/releases/2011/06/110623130933.htm http://www.sciencedaily.com/releases/2011/06/110616193735.htm New research has confirmed that an electronic technology called "ultrawideband" could hold part of the solution to an ambitious goal in the future of medicine -- health monitoring with sophisticated "body-area networks." Such networks would offer continuous, real-time health diagnosis to reduce the onset of degenerative diseases, save lives and cut health care costs. Thu, 16 Jun 2011 19:37:37 EDT http://www.sciencedaily.com/releases/2011/06/110616193735.htm http://www.sciencedaily.com/releases/2011/06/110614154546.htm A new system would jam wireless signals sent to medical implants by unauthorized users. Tue, 14 Jun 2011 15:45:45 EDT http://www.sciencedaily.com/releases/2011/06/110614154546.htm http://www.sciencedaily.com/releases/2011/06/110611082052.htm Scientists have achieved a milestone in creating a building block for the future of wireless devices. Researchers have announced the first integrated circuit fabricated from wafer-size graphene, and demonstrated a broadband frequency mixer operating at frequencies up to 10 gigahertz (10 billion cycles/second). Sat, 11 Jun 2011 08:20:20 EDT http://www.sciencedaily.com/releases/2011/06/110611082052.htm http://www.sciencedaily.com/releases/2011/06/110609083222.htm In the aftermath of the London bombings mobile phones and radios stopped working making the already tricky rescue operation even more difficult. Now experts have developed a solution to ensure breakdowns in communication are a thing of the past for emergency workers responding to disasters. Thu, 09 Jun 2011 08:32:32 EDT http://www.sciencedaily.com/releases/2011/06/110609083222.htm http://www.sciencedaily.com/releases/2011/03/110323104721.htm The problem of physically accommodating multiple antennas or multiple-input multiple-output (MIMO) technology in the latest consumer products is investigated in new research. Wed, 23 Mar 2011 10:47:47 EDT http://www.sciencedaily.com/releases/2011/03/110323104721.htm http://www.sciencedaily.com/releases/2011/03/110317131415.htm The University of Greenwich has joined forces with a Kent-based company in the design and manufacture of a bomb disposal robot for use by security forces, including the British Army. Thu, 17 Mar 2011 13:14:14 EDT http://www.sciencedaily.com/releases/2011/03/110317131415.htm http://www.sciencedaily.com/releases/2011/03/110307142226.htm Steel walls are no match for one doctoral student. He has developed and demonstrated an innovative new system that uses ultrasound to simultaneously transmit large quantities of data and power wirelessly through thick metal walls, like the hulls of ships and submarines. Mon, 07 Mar 2011 14:22:22 EST http://www.sciencedaily.com/releases/2011/03/110307142226.htm http://www.sciencedaily.com/releases/2011/02/110228104119.htm New research has highlighted the problems of reduced sensitivity in wireless communications, along with developing new solutions to overcome the loss of connectivity. Mon, 28 Feb 2011 10:41:41 EST http://www.sciencedaily.com/releases/2011/02/110228104119.htm http://www.sciencedaily.com/releases/2011/02/110224091741.htm Researchers have developed a highly-linear reconfigurable transceiver, eliminating the need of surface acoustic wave (SAW) filters. The unique approach is a major breakthrough towards fully reconfigurable radios by relaxing the requirements of the antenna filters, which suffered today from limited flexibility due to the high filtering specs. The fully reconfigurable transceiver 'Scaldio' is compatible with multiple wireless standards including the fourth generation mobile broadband standard 3GPP-LTE. Thu, 24 Feb 2011 09:17:17 EST http://www.sciencedaily.com/releases/2011/02/110224091741.htm http://www.sciencedaily.com/releases/2011/02/110222121911.htm A prototype implantable eye pressure monitor for glaucoma patients is believed to contain the first complete millimeter-scale computing system. Tue, 22 Feb 2011 12:19:19 EST http://www.sciencedaily.com/releases/2011/02/110222121911.htm http://www.sciencedaily.com/releases/2011/02/110217083024.htm High-quality video communications capable of supporting flawless video conferencing and home entertainment without goggles could become a reality. Researchers in the UK are working on systems to support telepresence with the aid of three-dimensional 'Avatar-style' stereoscopic video and audio communications. Thu, 17 Feb 2011 08:30:30 EST http://www.sciencedaily.com/releases/2011/02/110217083024.htm http://www.sciencedaily.com/releases/2011/02/110214155503.htm A new technology that allows wireless signals to be sent and received simultaneously on a single channel has been developed. The research could help build faster, more efficient communication networks, at least doubling the speed of existing networks. Mon, 14 Feb 2011 15:55:55 EST http://www.sciencedaily.com/releases/2011/02/110214155503.htm http://www.sciencedaily.com/releases/2011/02/110203081443.htm With the numbers of people aged 65 and over growing, the costs to the state to care for or assist them are set to continue rising across the European Union. With this backdrop, two companies have combined their differing expertise, to create a monitoring system with wireless touch screen devices that enables senior citizens to receive help and guidance at home and call for emergency assistance if required. Thu, 03 Feb 2011 08:14:14 EST http://www.sciencedaily.com/releases/2011/02/110203081443.htm http://www.sciencedaily.com/releases/2011/01/110124120850.htm Researchers have recently made great strides in the development of more reliable and efficient spectrum sensing techniques that will be needed to meet the ever-expanding demand for wireless technologies. Mon, 24 Jan 2011 12:08:08 EST http://www.sciencedaily.com/releases/2011/01/110124120850.htm http://www.sciencedaily.com/releases/2010/11/101110113052.htm Wireless. For most, the word conjures images quaint coffee shops or busy airport lobbies -- places where people drop in to check on business or check in with other people. But increasingly "wireless" is showing up on the farm to help produce better crops, net more money for growers and land a superior product in stores for consumers, according to experts. Wireless agriculture is yielding benefits in rice and cotton. Wed, 10 Nov 2010 11:30:30 EST http://www.sciencedaily.com/releases/2010/11/101110113052.htm http://www.sciencedaily.com/releases/2010/11/101103102022.htm A major breakthrough in wireless technology designed to bring broadband to people living beyond the optical fiber network has been unveiled in Australia. Wed, 03 Nov 2010 10:20:20 EDT http://www.sciencedaily.com/releases/2010/11/101103102022.htm http://www.sciencedaily.com/releases/2010/10/101018131425.htm Researchers have built and successfully tested an amplifier made from graphene that could lead to more efficient circuits in electronic chips, such as those used in Bluetooth headsets and toll collection devices in cars. Mon, 18 Oct 2010 13:14:14 EDT http://www.sciencedaily.com/releases/2010/10/101018131425.htm http://www.sciencedaily.com/releases/2010/10/101005085500.htm Researchers in Belgium have developed a mobile heart monitoring system that allows to view your electrocardiogram on an Android mobile phone. The innovation is a low-power interface that transmits signals from a wireless ECG (electrocardiogram or heart monitoring)-sensor system to an android mobile phone. Tue, 05 Oct 2010 08:55:55 EDT http://www.sciencedaily.com/releases/2010/10/101005085500.htm http://www.sciencedaily.com/releases/2010/08/100808212806.htm Providing patients with chronic heart failure access to remote monitoring, for example by telephone or telemonitoring using wireless technology, reduces deaths and hospitalizations and may provide benefits on health care costs and quality of life. These are the conclusions of a new review by an international team of researchers. Sun, 08 Aug 2010 21:28:28 EDT http://www.sciencedaily.com/releases/2010/08/100808212806.htm http://www.sciencedaily.com/releases/2010/06/100622142559.htm 3G and Wi-Fi are the two main mobile communications technologies today, but until recently they have been complementary services, the former offering users network access through cellphone masts forming a wide-area network (WAN), the latter based on hot-spot connections through a local-area network (LAN). Both then provide connectivity to the web, email and other services. Tue, 22 Jun 2010 14:25:25 EDT http://www.sciencedaily.com/releases/2010/06/100622142559.htm http://www.sciencedaily.com/releases/2010/06/100609094657.htm A cognitive baseband radio (COBRA) architecture has been introduced targeting 4G requirements at up to 1Gbit/s throughput and multiple asynchronous concurrent streams (for instance simultaneous digital broadcasting reception and high-speed internet access). The low-cost, flexible architecture answers a new trend in wireless communication where terminals give their users ubiquitous broadband access to a multitude of services. Wed, 09 Jun 2010 09:46:46 EDT http://www.sciencedaily.com/releases/2010/06/100609094657.htm http://www.sciencedaily.com/releases/2010/05/100531082609.htm Homes no longer need to be riddled with cables, nor do we need to battle with complicated technological devices anymore. This thanks to EnComPas-2, a European research project developed through the EUREKA initiative for innovation and providing a pioneering solution to manage our communications needs and anticipate the future of telecom technologies. Mon, 31 May 2010 08:26:26 EDT http://www.sciencedaily.com/releases/2010/05/100531082609.htm http://www.sciencedaily.com/releases/2010/05/100526111328.htm A wireless monitoring system for people with debilitating conditions such as Parkinson's disease or chronic obstructive pulmonary disorder could allow health-care workers to assess a patient's health and the development of their disease without hindering their movements. Wed, 26 May 2010 11:13:13 EDT http://www.sciencedaily.com/releases/2010/05/100526111328.htm http://www.sciencedaily.com/releases/2010/05/100521191436.htm There's a potential threat lurking in your internet café, say computer science researchers. It's called Typhoid adware and works in similar fashion to Typhoid Mary, the first identified healthy carrier of typhoid fever who spread the disease to dozens of people in the New York area in the early 1900s. Fri, 21 May 2010 19:14:14 EDT http://www.sciencedaily.com/releases/2010/05/100521191436.htm http://www.sciencedaily.com/releases/2010/04/100423113728.htm An alternative economical telematics for the current railway system has been proposed, with applications enabling monitoring and control of elements that make up rail infrastructure. Fri, 23 Apr 2010 11:37:37 EDT http://www.sciencedaily.com/releases/2010/04/100423113728.htm http://www.sciencedaily.com/releases/2010/04/100401100959.htm Online communities could easily be used to offer people with chronic illnesses, such as diabetes , wireless health care services via mobile phones and the Internet. The approach would reduce health care costs and empower many patients to manage their condition more effectively. Thu, 01 Apr 2010 10:09:09 EDT http://www.sciencedaily.com/releases/2010/04/100401100959.htm http://www.sciencedaily.com/releases/2010/03/100315230048.htm Besides carrying digital data, optical fibers can also transmit radio signals for wireless communication. So-called "radio-over-fiber" technology has been used to provide access to radio dead zones, but new research is looking into using this technology to broadcast wireless closer to home. Mon, 15 Mar 2010 23:00:00 EDT http://www.sciencedaily.com/releases/2010/03/100315230048.htm http://www.sciencedaily.com/releases/2010/03/100309151503.htm In the future, getting a broadband connection might be as simple as flipping on a light switch. In fact, according to a group of researchers from Germany, the light coming from the lamps in your home could one day encode a wireless broadband signal. Tue, 09 Mar 2010 15:15:15 EST http://www.sciencedaily.com/releases/2010/03/100309151503.htm http://www.sciencedaily.com/releases/2010/03/100309102523.htm Universities around the country are struggling with shrinking budgets, even as they need to cater to the needs of an increasing number of students. New research shows that one way to cut down on costs, and simultaneously improve the learning experience, is to have students use the technology they already bring into the classroom. Tue, 09 Mar 2010 10:25:25 EST http://www.sciencedaily.com/releases/2010/03/100309102523.htm http://www.sciencedaily.com/releases/2010/03/100305083308.htm Recent emergency situations that have arisen in the UK, including severe flooding, extreme weather, and even terrorist attacks have highlighted repeatedly just how vulnerable some sections of society can be in such circumstances. UK researchers suggest that wireless technology could hold the key to remedying this problem. Fri, 05 Mar 2010 08:33:33 EST http://www.sciencedaily.com/releases/2010/03/100305083308.htm http://www.sciencedaily.com/releases/2010/03/100304165852.htm By accurately recreating the jumbled wireless signal environment of a city business district in a special indoor test facility, researchers have shown how the wireless industry could lop hours off the process of testing the capabilities of new cellular phones. Thu, 04 Mar 2010 16:58:58 EST http://www.sciencedaily.com/releases/2010/03/100304165852.htm http://www.sciencedaily.com/releases/2010/02/100209124402.htm Scientists report a 2.4GHz/915MHz wake-up receiver which consumes only 51µW power. This record low power achievement opens the door to battery-less or energy-harvesting based radios for a wide range of applications including long-range RFID and wireless sensor nodes for logistics, smart buildings, healthcare etc. Tue, 09 Feb 2010 12:44:44 EST http://www.sciencedaily.com/releases/2010/02/100209124402.htm http://www.sciencedaily.com/releases/2010/01/100127211857.htm Light is better than radio waves when it comes to some wireless communications, according to a group of engineers. Optical communications systems could provide faster, more secure communications with wider bandwidth and would be suitable for restricted areas like hospitals, aircraft and factories. Wed, 27 Jan 2010 21:18:18 EST http://www.sciencedaily.com/releases/2010/01/100127211857.htm http://www.sciencedaily.com/releases/2010/01/100120122645.htm Networks that monitor life-threatening situations or improve environmental efficiencies will be easier and cheaper to develop and operate, following the creation of a single middleware solution for the entire spectrum of wireless standards. Wed, 20 Jan 2010 12:26:26 EST http://www.sciencedaily.com/releases/2010/01/100120122645.htm http://www.sciencedaily.com/releases/2010/01/100107114422.htm Mobile technologies, including the global system for mobile communication and the ZigBee short-range wireless data connection technology could be used to monitor and detect bushfires, according to new research. Thu, 07 Jan 2010 11:44:44 EST http://www.sciencedaily.com/releases/2010/01/100107114422.htm http://www.sciencedaily.com/releases/2009/11/091104101543.htm Researchers are working to develop futuristic communications systems that could help protect frontline troops. Building on work completed recently for the UK Ministry of Defence, the project is aimed at investigating the use of arrays of highly specialized antennas that could be worn by combat troops to provide covert short-range person-to-person battleground communications. Wed, 04 Nov 2009 10:15:15 EST http://www.sciencedaily.com/releases/2009/11/091104101543.htm http://www.sciencedaily.com/releases/2009/11/091102121632.htm A wireless digital "plaster" that can monitor vital signs continuously and remotely is being tried out with patients and healthy volunteers in a new clinical trial run by researchers in the UK. The digital "plaster" or "patch" is a disposable device that sticks to a patient's chest. It is designed to allow patients to have their health monitored continuously without being wired up to bulky, fixed monitoring machines. Mon, 02 Nov 2009 12:16:16 EST http://www.sciencedaily.com/releases/2009/11/091102121632.htm http://www.sciencedaily.com/releases/2009/11/091102112050.htm A telemedicine system based on a modified version of the Bluetooth wireless protocol can transfer patient data, such as medical images from patient to the health-care provider's mobile device for patient assessment almost four times as fast as conventional Bluetooth and without the intermittent connectivity problems. Mon, 02 Nov 2009 11:20:20 EST http://www.sciencedaily.com/releases/2009/11/091102112050.htm http://www.sciencedaily.com/releases/2009/10/091008161900.htm Robots equipped with wireless and sensing capabilities are available for use in the home. But the safety and privacy risks of these devices are not yet adequately addressed, according to a new study. Thu, 08 Oct 2009 16:19:19 EDT http://www.sciencedaily.com/releases/2009/10/091008161900.htm http://www.sciencedaily.com/releases/2009/10/091007091748.htm Government agencies and other organizations planning to use WiMAX -- Worldwide Interoperability for Microwave Access -- networks can get technical advice on improving the security of their systems from a draft computer security guide prepared by NIST. Wed, 07 Oct 2009 09:17:17 EDT http://www.sciencedaily.com/releases/2009/10/091007091748.htm http://www.sciencedaily.com/releases/2009/10/091006104314.htm Researchers in Europe have unveiled a miniaturized and wireless 8-channel EEG system. The system is suited for remote monitoring of patients in their daily environment, resulting in more natural readings and greatly increasing the patient's comfort. Tue, 06 Oct 2009 10:43:43 EDT http://www.sciencedaily.com/releases/2009/10/091006104314.htm http://www.sciencedaily.com/releases/2009/10/091001095608.htm For the first time, researchers have demonstrated 60 GHz broadband radio for wireless transmission of HD video data, HDTV, live. The findings mean more robust transmissions that are less susceptible to interference. Thu, 01 Oct 2009 09:56:56 EDT http://www.sciencedaily.com/releases/2009/10/091001095608.htm http://www.sciencedaily.com/releases/2009/09/090908103638.htm Antennas for the latest implanted medical devices are being developed in the UK. In the near future, in-body medical devices such as pacemakers will use radio frequency (RF) technology to improve healthcare for patients. A low-powered, two-way wireless communications system linking an in-body device to a monitoring system can provide up-to-the minute patient data to allow doctors to adjust treatment as soon as it is needed. Tue, 08 Sep 2009 10:36:36 EDT http://www.sciencedaily.com/releases/2009/09/090908103638.htm http://www.sciencedaily.com/releases/2009/08/090814192853.htm Laws aimed at tackling illegal use of wireless internet connections are restricting attempts to increase broadband access, according to new research. Fri, 14 Aug 2009 19:28:28 EDT http://www.sciencedaily.com/releases/2009/08/090814192853.htm http://www.sciencedaily.com/releases/2009/07/090729140243.htm Powerful new radio technologies that promise blisteringly fast WiFi have been given a boost by a team of researchers’ cutting-edge work on miniscule microchips. Wed, 29 Jul 2009 14:02:02 EDT http://www.sciencedaily.com/releases/2009/07/090729140243.htm http://www.sciencedaily.com/releases/2009/07/090701150851.htm Researchers have developed a groundbreaking middleware platform that could lead to thousands of new applications in a range of industries. Beginning with in-car electronics, the platform can access the functionality, but hide the underlying complexity, of embedded sensors, making development and deployment of new services a snap. Wed, 01 Jul 2009 15:08:08 EDT http://www.sciencedaily.com/releases/2009/07/090701150851.htm http://www.sciencedaily.com/releases/2009/06/090626091136.htm For those who are caring for elderly parents, peace of mind is hard to come by. And, for their parents, dignity is hard to retain. But researchers hopes to ease worries and frustrations by designing an affordable in-home health-monitoring system that will notify caregivers, via smartphones or PDAs, if their loved ones need attention. Fri, 26 Jun 2009 09:11:11 EDT http://www.sciencedaily.com/releases/2009/06/090626091136.htm http://www.sciencedaily.com/releases/2009/06/090603131441.htm Engineers have built a fast, ultra-broadband, low-power radio chip, modeled on the human inner ear, that could enable wireless devices capable of receiving cell phone, Internet, radio and television signals. Wed, 03 Jun 2009 13:14:14 EDT http://www.sciencedaily.com/releases/2009/06/090603131441.htm