阅收藏：New 'pCell' Technology Could Bring Next Generation Speeds To 4G Networks

An anonymous reader writes in about a possible game changer in wireless technology that embraces interference with great results: "It's one of those elegant inventions that only surface maybe once a decade. If it works at scale, according to IEEE Spectrum, it could 'radically change the way wireless networks operate, essentially replacing today's congested cellular systems with an entirely new architecture that combines signals from multiple distributed antennas to create a tiny pocket of reception around every wireless device.' This scheme could allow each device to use the full bandwidth of spectrum available to the network, which would 'eliminate network congestion and provide faster, more reliable data connections.' And the best part? It's compatible with 4G LTE phones, which means it could be deployed today." The idea is that an array of dumb antennas are deployed and a very powerful cluster computes signals that are sent from all of them which then appear to be a single coherent signal to only a single device. There's a short paper on the Distributed In Distributed Out technique, but it is a bit light on the mathematical details.

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阅收藏：Why Improbable Things Really Aren't

First time accepted submitter sixoh1 writes "Scientific American has an excellent summary of a new book 'The Improbabilty Principle: Why Coincidences, Miracles, and Rare Events Happen Every Day' by David J. Hand. The summary offers a quick way to relate statistical math (something that's really hard to intuit) to our daily experiences with unlikely events. The simple equations here make it easier to understand that improbable things really are not so improbable, which Hand call the 'Improbability Principle:' 'How can a huge number of opportunities occur without people realizing they are there? The law of combinations, a related strand of the Improbability Principle, points the way. It says: the number of combinations of interacting elements increases exponentially with the number of elements. The 'birthday problem' is a well-known example. Now if only we could harness this to make an infinite improbability drive!"

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阅收藏：Vikings' Secret Code Cracked

sciencehabit writes "What may look like mere scratches is much more. A 900-year-old Viking code known as jötunvillur has been cracked. The code-cracker, runologist Jonas Nordby from the University of Oslo, deciphered the system after realizing he needed to replace the original runic character with the last sound used to pronounce it. For instance, the runic character 'k' is pronounced 'kaun,' so k becomes n. Nordby believes secret messages were created by the Vikings for entertainment. One piece of wood reads: 'Kiss me.'"

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阅收藏：Nokia Turns To Android To Regain Share In Emerging Markets

puddingebola writes "Nokia is preparing to release its first Android phone, as the lost market share in emerging markets from the death of Symbian has never been recovered. Windows Phone could never be adapted to the entry level devices that have driven growth in these markets, necessitating the move. From the article, 'Nokia was once the king of cellphones in emerging markets. But it has lost ground because it was slow to respond to Android's popularity in many countries. In India, where Nokia's Symbian-powered phones held a big share of cellphone sales just a few years ago, Android was installed on 93% of new smartphones shipped there last year, according to estimates from research firm IDC.'"

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阅收藏：11-Year UK Study Reports No Health Danger From Mobile Phone Transmissions

Mark.JUK writes "The United Kingdom's 11-years long Mobile Telecommunications and Health Research Programme (MTHR) has today published a comprehensive report that summarizes 31 research projects, which investigated the potential for biological or adverse health effects of mobile phone and wireless signals on humans (e.g. as a cause for various cancers or other disorders). The good news is that the study, which has resulted in nearly 60 papers appearing in peer-reviewed scientific journals, found 'no evidence' of a danger from mobile transmissions in the typically low frequency radio spectrum bands (e.g. 900MHz and 1800MHz etc.)."

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