Japanese telecoms giant NTT DOCOMO is reportedly mulling the possibility of rolling out a ‘5G’ wireless platform in time for the Tokyo Olympics in 2020, Total Telecom reports. According to the article, Takehiro Nakamura, director of NTT DOCOMO’s radio system design group, said in a presentation on 22 October that NTT’s 5G technology concept involves 1,000-fold increase in access network capacity, in order to support the number of ‘multiple personal devices that will connect wirelessly over the coming years’. To achieve this increase, NTT DOCOMO has proposed using large amounts of high-frequency spectrum coupled with multiple-input multiple-output (MIMO) technology, which significantly increases the number of aggregated antennas in the access network. Takehiro claimed that a 30x capacity increase could be realised by using 100MHz of 3.5GHz spectrum delivered via twelve small cells. However, the executive admitted that using such high frequencies would mean that the benefits would only be experienced outdoors, adding that ‘we should consider new radio access technologies to create the big gain needed’.