The use of coding for error control is an integral part in the design of modern communication systems. Capacity-approaching codes such as turbo and low-density parity-check (LDPC) codes, discovered or rediscovered in the past decade, offer near Shannon-limit performance with rather low implementation complexity and are therefore increasingly being applied for error control in various fields of data communications. This paper describes a generic multilevel modulation and coding scheme based on the use of turbo, turbo-like, or LDPC codes for digital subscriber line (DSL) systems. Such techniques are also suitable for general multilevel modulation systems in other application areas.
Keywords: Oelcer, Olcer
By: Evangelos Eleftheriou, Sedat Ölçer, and Hamid Sadjadpour
Published in: RZ3457 in 2002
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