Signals That do not Overlap in the Time-Domain

• When signals do not overlap in the time-domain then one signal stops before another one begins.
• Signals are easily separated when the receiver only ``listens'' while the signal of interest is sent.
• This multiple-access method is called Time Division Multiple Access.
• Acronym: TDMA.
• Example: TDMA is employed in the digital portion of the telephone network.
• Example: TDMA and FDMA together are used in many modern digital cellular telephone systems.

  

Figure 2.5: Four signals that don't overlap in the time domain (TDMA).