Debate rages on about whether LTE can live harmoniously with WiFi in the 5 GHz unlicensed band, but meanwhile supporters of the idea are pushing forward with trials to try to prove their point. Vodafone has conducted the first live trial of LTE carrier aggregation, in which licensed and unlicensed spectrum is bonded together. Working with Ericsson and Qualcomm, the operator said it had demonstrated that adding 5 GHz spectrum to the downlink would improve speeds for LTE users, and that there was fair coexistence with WiFi. The over-the-air test ran between Ericsson RBS 6402 small cells and a Qualcomm’s new Snapdragon X12 LTE modem, on Vodafone’s commercial network in the Netherlands. In total, 20 MHz of Vodafone’s 1.8 GHz…