Fujitsu Laboratories Ltd. today announced that it has built a prototype wireless unit incorporating inter-subarray coding technology, which makes it possible to achieve high-speed transmissions, in excess of 10 Gbps, for 5G mobile wireless base stations and access points. It has achieved these high speeds whilst maintaining low power consumption levels on par with Wi-Fi. In verification tests, the prototype successfully transmitted signals simultaneously to multiple devices.
In order to achieve 5G ultra high-speed communications, for which development is ongoing with the aim of practical implementation by about 2020, attention is centered on technology that uses the millimeter waveband and multiple antenna elements to simultaneously transmit signals as beams to each individual device. Currently, hybrid beamforming is being developed which could reduce the number of circuits, which consume a lot of power, by controlling both digital and analog circuits. However, this method has issues as interference occurs when sending signals to multiple devices, leading to reduced transmission rates. Now, Fujitsu Laboratories has verified the effectiveness of this newly developed technology that can reduce this interference, limiting the reduction in transmission speed while still achieving low power consumption.
With this technology, it is now possible for users in an area with a high concentration of other users to simultaneously, and with stability, communicate at high rates.
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