NTT: Satellite-to-ground, 20Gbps communication: 920MHz band / satellite IoT platform
NTT:
We will carry out a demonstration experiment of innovative satellite technology toward the realization of 20 Gbps satellite-terrestrial communication.
NTT and JAXA:
Using JAXA’s satellite MIMO technology, we will demonstrate the 920MHz band / satellite IoT platform in orbit.
This theme is the first in the world:
Demonstration test of “low-orbit satellite MIMO technology”,
Demonstration test of “satellite sensing technology“,
We will work on the above practical application.
Implementation process:
20Gbps communication path between satellite and ground
In 2022, launch of a small demonstration satellite,
Conduct various demonstration experiments until 2023
Increased capacity of satellite-terrestrial communication (over 20 Gbps),
We aim to realize worldwide / low-cost sensing (ultra-wide area satellite IoT platform).
Background of development proposal:
We will combine IOWN / optical and wireless network technology with JAXA’s space system technology.
We are also engaged in joint research toward ultra-high-speed, large-capacity, secure optical and wireless communications.
This time “low orbit satellite MIMO technology”:
This time, the aim is to establish the basic communication technology for the satellite orbit demonstration.
We will perform a verification test in combination with 920MHz band / satellite sensing technology verification.
NTT HOME
https://www.ntt.co.jp/news2020/2005/200529a.html
What is satellite MIMO:
Satellite MIMO:
Communication technology that seamlessly connects the universe and the earth.
In satellite communication, the radio wave propagation environment is very different from ground communication.
Space satellite communication difficulties:
Propagation distance is long and delay amount is large.
It is impossible to directly apply the communication technology that has been put to practical use in mobile phones, wireless LAN, etc.
Satellite MIMO solved:
Satellite MIMO is a mechanism for transmitting large amounts of data collected in space to the Earth at high speed.
It is a valuable technology that supports the dramatic advancement and activation of space utilization and exploration.
MIMO (Multiple Input Multiple Output):
Technology for increasing the capacity and speed of wireless LAN communication.
It uses multiple antennas for transmitter and receiver to transmit different information simultaneously and at the same frequency.