Advanced PHS (2001) will be one of the key areas in which PHS systems could enhance their capabilities in the future. This enhanced technology was named as Advanced PHS. In June 2001, a report on the Advanced PHS was submitted by the Ministry of Public Management, Home Affairs, Posts and Telecommunications (MPHPT), (now renamed as Ministry of Internal Affairs and Communications (MIC)), Japan. In March 2002, the technological regulations were standardized and included in RCR-STD-28 V4.0 by ARIB. The aforementioned report provides the following:

  • Addition of modulation methods (such as BPSK, 8PSK, 16QAM, etc.)
       - BPSK: Binary Phase Shift Keying
       - PSK: Phase Shift Keying
       - QAM: Quadrature Amplitude Modulation


  • Addition of 900kHz carrier spacing


  • Addition of high-speed data transmission capability (support for data transmission at 1 Mbps/channel by combining 4 slots)


  • Introduction of technologies designed to minimize interference from International Mobile Telecommunication-2000 (IMT-2000) frequency band


  • Introduction of Space Division Multiple Access (SDMA)


    • The presentation material is here.