Though full-fledged implementation of 5G networks is still looks to be anywhere around two or three years from now, but there are interesting technology demonstrations happening more frequently. At the recently held Brooklyn 5G summit in US, Nokia Networks demonstrated 5G network with the speed of 10 Gbps. Nokia Networks has partnered with National Instruments for this demo and has used x2 MIMO single carrier Null Cyclic Prefix modulation and frame size of 100 micro seconds to achieve low latency. Antenna technology is also playing important role here. This demonstration by Nokia uses Active Phased Array Antenna (APAA) to verify new multi-beamforming technology. The antenna was developed by Mitsubishi Electric.
Key features of the APAA prototype are as follows as shared by Mitsubishi Electric:
- Four-beam spatial multiplexing achieved with a multi-element antenna.
- Beamforming control of the direction of radio signal transmission and reception for two-dimensional vertical and horizontal scanning.
- Use of 3.5GHz, the highest frequency available in current cellular mobile communication.
"Multi-beamforming is expected to achieve efficient frequency utilization by forming and multiplexing a plurality of beams using multi-element antenna arrays. Mobile systems based on 5G, the mobile standard that will succeed LTE and LTE-Advanced, will use multi-beamforming to cope with fast-increasing radio traffic volume. " stated in the press release by Mitsubishi Electric.
Mitsubishi Electric's APAA technology is already used commercially in satellites and other systems, and now the company aims to adapt it for use in 5G base stations.
In another 5G related News NYU WIRELESS and SiBEAM has joined the university research center as an industrial-affiliate sponsor of "5G" research.
NYU WIRELESS is developing the fundamental science and mathematical channel models needed to develop 5G equipment. SiBEAM is into developing semiconductor devices based on CMOS RF (complementary metal–oxide–semiconductor radio frequency) technology in the range of 24 GHz and above. SiBEAM has built 60GHz chipsets using standard CMOS technology.