MMAC by Japan

MMAC by Japan
An MMAC is a Multimedia Mobile Access Communications system for connecting wireless devices
to optical-fiber networks. The desire to obtain high-speed wireless transmission rates is the driving
force behind MMAC designers, because MMACs are intended (as their name implies) for multimedia
applications, especially business-related ones, including voice, music, and video teleconferencing
transmissions [464]. The concept was originated in Japan.
The MMAC system divides the concept into four categories, based on target applications:
• High-Speed Wireless Access: a mobile communications system for mobile video telephone
conversations. Meant for indoor or outdoor use with a transmission rate of 30 Mbps.
• Ultra High-Speed Wireless LAN: an indoor system for high-quality TV conferences, transmitting
at 156 Mbps.
• 5-GHz Band Mobile Access: for multimedia transmissions indoors or outdoors, at 20 to
25 Mbps.
• Wireless Home-Link: for indoor use to link PCs and audiovisual equipment, with a 100-Mbps
transmission rate.