SIGNALLING
This is the basics of generating a signal of nearly any type. Signal are used to carry data, and understanding basic signalling techniques help provide an understanding of essential physical layer protocols.
MODULATION
Modulation is how we get data 'encoded' into a signal. Modulation is the process of altering a signal in specific ways so that the signal can indicate a change of state that matches the flow of zeroes and ones in the data stream.
Quantization
Quantization is the process of converting analog information to digital information. Quantization is used for storing music in digital format, for transmitting data across networks and transmitting voice, video and audio across digital networks.
Transmission
The process of transmitting information can be simple on/off signals, or more complex mixed radio frequencies. The goal may be the same but the process always differs according to the method of communication used.
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