Encoding scheme definition

The ASCII is a character-encoding scheme based on the ordering of the English alphabet. ASCII codes represent text in computers, communications equipment, and other devices that use text. ASCII includes definitions for 128 characters 33 are nonprinting control characters that affect how text and space is processed, 94 are printable characters, and the space character is considered an invisible graphic. For example, the ASCII code for the letter A is 65 and for the letter a is 97. 

The definition of encoding and decoding schemes, rate, average decoding error probability and channel capacity for a SIC can be found in [GP80], These definitions are essentially similar to the definitions given in Section 2.1, except for the fact that the channel transition probabilities are dependent on the state r.v. S and the absence of a distortion constraint at the encoder. 

---