In Reed-Solomon theorem, there are three most important parameters, RS(n,k,t) (detail will be introduced in part C) Reed-Solomon parameter s principle is based on finite fields known as Galois Fields (GF). For any prime number, p, there exists a finite field denoted GF(p) that contains p elements. It is possible to extend GF(p) to a field of pm elements, called an extension field of GF(p), and denote by GF(pm).
Symbols from the extension field GF(2m) are used in the construction of Reed-Solomon (RS) codes. 2m1 is the number of symbols in RS codes. In the other hand, the number of bits for each symbol is decided by degree m.
In this work, we use Reed-Solomon theorem with GF(27), which means our RS codes have 127 symbols, and each symbol is with 7 bits content. In Reed-Solomon codes, each message can be represented as a polynomial expression U(x) as Equation 1. Alpha is represented as each symbol. X is represented as location.
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