Chain of finite rings and construction of BCH Codes
Antonio Aparecido de Andrade, Tariq Shah, Attiq Qamar
Evento: XXX Simpósio Brasileiro de Telecomunicações (SBrT2012)
Keywords: Units of local ring BCH code McCoy rank direct product of local rings
AbstractFor a non negative integer t, let A0 ⊂ A1 ⊂ · · · ⊂ At−1 ⊂ At be a chain of unitary commutative rings, where each Ai is constructed by the direct product of suitable Galois rings with multiplicative group A ∗ i of units, and K0 ⊂ K1 ⊂ · · · ⊂ Kt−1 ⊂ Kt be the corresponding chain of unitary commutative rings, where each Ki is constructed by the direct product of corresponding residue fields of given Galois rings, with multiplicative groups K ∗ i of units. This correspondence presents four different type of construction techniques of generator polynomials of sequences of BCH codes having entries from A ∗ i and K ∗ i for each i, where 0 ≤ i ≤ t. The BCH codes constructed in  are limited to given code rate and error correction capability, however, proposed work offers a choice for picking a suitable BCH code concerning code rate and error correction capability.