Cellular Networks

Question 1

Access Networks

Answer 1

• wired
  
  • fiber
  • copper (DSL)
  • cable
• wireless
  
  • 3G, 4G, cellular
  • Wi-Fi
  • satellite

Question 2

CDMA

Answer 2

• Short for Code-Division Multiple Access, a digital cellular technology that uses spread-spectrum techniques.
• Unlike competing systems, such as GSM, that use TDMA, CDMA does not assign a specific frequency to each user.
• Instead, every channel uses the full available spectrum. Individual conversations are encoded with a pseudo-random digital sequence.