Basic Transmission concept:
Digital Signal:
Represent
binary digits as discrete electrical pulse.
Analog Signal:
Continuous signals that vary by amplification
and frequency.
Asynchronous communication:
Transfers data sequentially, uses start and
stop bits, and require that communicating devices communicate at the same
speed.
Synchronous communication:
High speed transmission controlled by
electronic clock timing signals.
Baseband Transmission:
Use the full bandwidth for only one channel
and has a low data rate
.
Broadband Transmission:
Divides the bandwidth into many channels enabling
different type of data to be transmitted, and provides a high data rate.
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