ABSTRACT

In modern communication systems, analog signals can also be converted into digital form for storage, transmission, etc. This involves a process called source coding, in which the analog source signal is coded into digital format. Usually, the source coding

techniques are optimized so as to represent the analog signal by a minimum number of information bits, but without sacrificing too much fidelity. Examples such as speech coding and video coding convert analog speech and video signals, respectively, into digital forms. When source encoders are present on the transmitter side, the corresponding decoders must be installed at the receiver side to convert the recovered digital symbols back to the analog format.