6 Immersive Media Short term

400Mbps Class Millimeter-Wave Wireless Transmission Technology for Contents Production

Wireless relay of ultra-high-definition 360-degree video


STRL is conducting research into large-capacity transmission technology used for 360-degree contents production, to help provide realistic immersive-media services. This demonstration shows real-time transmission of ultra-high-definition 360-degree video using a wireless transmission system with a 400-Mbps-class transmission capacity using millimeter waves*1.

Examples of real-time transmission of 360-degree video by 400-Mbps-class millimeter-wave wireless transmission

Wireless transmission using millimeter waves

By using millimeter waves in the 42-GHz band allocated for broadcast purposes, cameras can be made wireless, enabling live relay of ultra-high-definition 360-degree video in locations where it is difficult to lay cables.

Expanding transmission capacity using spatial division multiplexing transmission technology

STRL has developed MIMO-SC-FDE*2 technology for spatial division multiplexing transmission of single carrier-modulation signals at the same frequency with smaller transmitters. By using the wide bandwidth of millimeter waves, this has achieved a 400-Mbps-class transmission capacity, around twice that of the conventional system.

[Future plans]

STRL will develop 700-Mbps wireless transmission technology to further improve the definition of 360-degree video by 2025.

  • Millimeter waves: Radio waves with frequencies of 30–300 GHz (wavelengths 1–10 mm)
  • MIMO-SC-FDE: Multiple-Input Multiple-Output Single-Carrier Frequency Domain Equalization