Leave Ericsson alone for five seconds, and it goes and makes the technology it was just bragging about seem archaic. Just in case Telstra's 21Mbps Next G network seemed a bit -- how do you say, sluggish? -- Ericsson will be showcasing a new approach that enables peak downlink data rates of 42Mbps at Mobile World Congress. In order to achieve such tremendous speeds, it will rely on its so-called multi-carrier technology, which
