Trade-off analysis of decoding algorithms and architectures for multi-standard LDPC decoder

Abstract

Since Low-Density Parity-Check (LDPC) codes deliver excellent decoding performance, they are adopted in several recent communication standards like the IEEE 802.11n, IEEE 802.16e and DVB-S2. This raises the need for multi-standard, multi-mode decoder architectures. In this paper we propose to use the min-sum approximation together with a turbo-like decoding approach for decoding LDPC codes, and afterwards we perform a global trade-off analysis which enables the designer to choose the appropriate decoding algorithm.