Mobile Radio Systems in Japan: Standards and Technologies
By RF Wireless Expert Team
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This page covers various mobile radio systems used in Japan, including JTACS, PDC, NTT, NTACS, NEC, and PHS.
Mobile Radio Standards in Japan
The following table summarizes the key characteristics of various mobile radio standards used in Japan.
| Mobile Radio Standard | TYPE | YEAR | MULTIPLE ACCESS | FREQUENCY BAND | MODULATION | BW |
|---|---|---|---|---|---|---|
| JTACS | Cellular | 1988 | FDMA | 860-925 MHz | FM | 25 kHz |
| PDC | Cellular | 1993 | TDMA | 810-1501 MHz | pi/4 DQPSK | 25 kHz |
| NTT | Cellular | 1979 | FDMA | 400/800 MHz | FM | 25 kHz |
| NTACS | Cellular | 1993 | FDMA | 843-925 MHz | FM | 12.5 KHz |
| NTT | Paging | 1979 | FDMA | 280 MHz | FSK | 12.5 KHz |
| NEC | Paging | 1979 | FDMA | Many | FSK | 10 KHz |
| PHS | Cordless | 1993 | TDMA | 1895-1907 MHz | pi/4 DQPSK | 300 KHz |
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