Ex-MIT company rethinks power-feasting amplifiers

(Phys.org)—Technologists generally agree that power amplifiers have proven to be inefficient pieces of hardware. Turning electricity into radio signals, they eat into the battery life of smartphones and they waste power. ...

New 4G network could cause widespread GPS dead zones

(PhysOrg.com) -- If a plan to build new 4G mobile phone base stations in the US goes ahead, engineers say GPS satellite navigation systems will be seriously jammed and huge areas of the country will become GPS dead zones.

Security gaps identified in LTE mobile telephony standard

By abusing security weaknesses in the LTE mobile telephony standard, attackers are able to identify which web pages a user visits and to reroute him to a scam website. This is the result of a study carried out by security ...

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