Another Baseband Signal Set

• The signal set below is also a baseband signal set.
• The two signals are also negatives of each other. Thus, it is an antipodal signal set.

  

Figure 2.24: Alternative Baseband antipodal signal set.

• The bit sequence 100110 would be transmitted as shown in the Figure below using this signal set.
• Notice that each bit period contains a transition, either form positive to negative or vice versa.
• This feature is desirable in practice as it makes it easier to determine where bit period begins.
• The process of finding the beginning of bit periods is called synchronizat ion.

  

Figure 2.25: Alternative baseband signal for bit sequence 100110.