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NEC massive-element active antenna system supporting 28GHz band

NEC Corporation has developed a prototype of a massive-element (approximately 500 elements) Active Antenna System (AAS) for base stations that supports 28GHz band, with a view toward the application of 5G, the next generation wireless communication standard.

“The need for high-speed and high-capacity communication services is growing in pace with the distribution of 4K/8K video and the spread of new technologies such as augmented reality and virtual reality,” said Katsumi Tanoue, Deputy General Manager, Mobile Radio Access Network Division, NEC Corporation. 

NEC’s simulation trials of the newly developed AAS, which adopts beamforming, a technology for transmitting radio waves in multiple directions (to objects) while intensively and simultaneously using many antenna elements, achieved up to one kilometer in long-distance communications in 16 respective directions on 28GHz high radio frequency bands, at a communications speed of 30Gbps or faster per cell, and spectral efficiency 20 times greater than LTE on a per-communication area basis. In addition, original NEC technologies helped save several dozen watts of power and reduced the size by approximately 50%.

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