Technology - Mobile 1 - 2G - Introduction & IS-136 TDMA


Analogue mobile telephony began with many incompatible systems in the 1980s. By the mid 1990s, the 1G AMPS analogue system and its 2G digital descendant IS-136 TDMA were widely used in North America, with AMPS and 2G GSM the most prominent systems in other areas. We discuss these developments and look in detail at IS-136 TDMA.

Table of Contents

  • 1. Synopsis
  • 2. Introduction
    • 2.1 Mobile cellular defined
    • 2.2 1G to 4G and beyond
      • 2.2.1 Mobile broadcasting
  • 3. 1G History
  • 4. AMPS
    • 4.1 Spectral efficiency
    • 4.2 Security
    • 4.3 N-AMPS
    • 4.4 IS-54 DAMPS
    • 4.5 AMPS closure
  • 5. Terminology and early 2G systems
    • 5.1 PCS, PCN, PHS and PDC
    • 5.2 Japanese systems
      • 5.2.1 PHS
      • 5.2.2 NTT’s PDC, DoCoMo and i-mode
      • 5.2.3 i-mode’s limitations
  • 6. IS-136 TDMA
    • 6.1 800MHz and 1.9GHz
    • 6.2 Traffic channels for voice and control
    • 6.3 Digital Control Channels (DCCH)
    • 6.4 IS-136 future
  • 7. Related reports

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Licence Information

Focus Report Profile


Mobile & Wireless Broadband and Media
Mobile Communications (voice and infrastructure)

Number of pages 9

Status Archived

Last updated 19 Mar 2007
Update History

Analyst: Robin Whittle

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