NTT:Spectrum decomposition and transmission technology: Decompose and combine satellite radio signals
NTT Access Service Systems Laboratories:
The spectrum of the signal output from the satellite communication modem can be freely decomposed.
Place the decomposed signal at the desired frequency of the satellite repeater,
Extract a predetermined signal on the receiving side and synthesize it again.
Researched and developed “spectrum-resolved synthesis transmission technology”.
“Spectrum decomposition and synthesis transmission technology”:
By using this technology, multiple unused bands of satellite repeaters can be bundled and used without frequency relocation.
In addition to the convenience of normal times, it is expected that more efficient satellite use will be possible when using emergency satellite communications during disasters.
Advanced security: Difficult to intercept third party signals
Furthermore, by decomposing the signal spectrum at the physical layer and distributing the information on the repeaters, it becomes difficult for third parties to intercept the signal, and it can also be used as a technology for improving security.
Through satellite demonstration experiments, we have confirmed that this technology can be used to freely disassemble, arrange, and synthesize transmission signals from general-purpose satellite communication modems.
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