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

Synopsis

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