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CHAPTER 5 - Coggle Diagram

- - - - TDMA systems divide each FDMA channel into time slots
      - Each user occupies a cyclically repeating time slot.
      - TDMA can allow different number of time slots for separate user
  - - - -Uplink and downlink will separate frames in different carrier frequencies.
        -Duplex distance is the space between the uplink and downlink frequencies.
    - - Half of timeslots in the frame will corresponds uplink and other half downlink within same carrier.
- - - - Enable many mobile users to share
        
        Sharing of channel capacity
        
        Maximize System Capacity thru Dynamic Resource Allocation and Spectrum Reuse
        
        High performance is achieved
  - - - Each user is assigned a separate frequency range
  - - - a technique where two or more channels of information are transmitted over the same link by allocating a different time interval (slot) for the transmission of each channel
      - the channels take turns to use the link.
      - Multiple users share the allocated frequency bands, and each user use an allocated time.
  - - - The bandwidth used by all users simultaneously, which is separated by means of code.
  - - - The bandwidth is divided to the different users as needed
  - - - DUPLEXING
        
        TIME DOMAIN
        
        REVERSE TIME SLOT
        
        FORWARD TIME SLOT
        
        FREQURNCY DOMAIN
        
        REVERSE BAND
        
        FORWARD BAND
  - - - uses time for forward and reverse link
      - multiple users share a single radio channel
      - forward time slot
      - reverse time slot
      - no duplexer is required