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Mobile Radio Systems in Japan: Standards and Technologies

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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 StandardTYPEYEARMULTIPLE ACCESSFREQUENCY BANDMODULATIONBW
JTACSCellular1988FDMA860-925 MHzFM25 kHz
PDCCellular1993TDMA810-1501 MHzpi/4 DQPSK25 kHz
NTTCellular1979FDMA400/800 MHzFM25 kHz
NTACSCellular1993FDMA843-925 MHzFM12.5 KHz
NTTPaging1979FDMA280 MHzFSK12.5 KHz
NECPaging1979FDMAManyFSK10 KHz
PHSCordless1993TDMA1895-1907 MHzpi/4 DQPSK300 KHz