A signal of a single frequency that can be altered by a second signal that contains data. The high-pitched tone that a modem emits is an example of a carrier signal. Changes, or modulation, in the carrier's amplitude, frequency, or phase can convey information.
a continuous signal on an analog copper telephone line
a signal whose frequency is modulated to carry analog or digital signal information
a single frequency that is used to carry the intelligence (data)
a specific frequency in an analog communication channel that is modulated with an information-carrying signal
a tone used as a basis for the acoustic transmission
The underlying frequency or frequencies that are to carry information. They are modulated through one or more modulation techniques to impose information on the signal. Carrier Sense Multiple Access with Collision Detection (CSMA/CD) The access method used in Ethernet. All nodes are attached to a single cable and contend equally for access to the transmission medium. if two nodes attempt to send data at the same time, they "sense" each other's signal and immediately stop sending. They will both try to send again after Waiting a random number of microseconds.
The basic radio, television, or telephony center of a frequency transmission signal.
In communications, a signal of chosen frequency generated to carry data, often used for long-distance transmissions. The data is added to this carrier signal by modulation, and decoded on the receivi ... more