Australia’s Optus and Chinese vendor Huawei have announced a live trial of 4.5G technology in which they achieved downlink speeds of 1.41Gbps, with theoretical maximum speeds reaching 1.43Gbps. In a successful trial of LTE-Advanced Pro at Optus’ Gigasite in Newcastle, north of Sydney, the companies aggregated 100MHz (5×20MHz) of Optus’ ‘unique network frequency bands’, while also utilising 4×4 multiple input, multiple output (MIMO) and 256 quadrature amplitude modulation (QAM) technologies to enable higher peak rates. Meanwhile, it was noted that the combination of carrier aggregation (CA), Higher Level Modulation and 4X4 MIMO achieved a peak download speed of 1.23Gbps over the air in live network conditions.
Commenting on the trial, Dennis Wong, Optus Networks’ acting managing director, was cited as saying: ‘We continue to utilise our network and spectrum assets to test our network of the future and prepare for 5G. By 2020, 5G will be here and we are committed to identify ways to prepare our network to support this new technology and further improve customer experience.’