1. Analysis and Design of Cost-Effective, High-Throughput LDPC Decoders
- Author
-
Nguyen-Ly, Thien Truong, Savin, Valentin, Le, Khoa, Declercq, David, Ghaffari, Fakhreddine, and Boncalo, Oana
- Subjects
Electrical Engineering and Systems Science - Signal Processing ,Computer Science - Hardware Architecture - Abstract
This paper introduces a new approach to cost-effective, high-throughput hardware designs for Low Density Parity Check (LDPC) decoders. The proposed approach, called Non-Surjective Finite Alphabet Iterative Decoders (NS-FAIDs), exploits the robustness of message-passing LDPC decoders to inaccuracies in the calculation of exchanged messages, and it is shown to provide a unified framework for several designs previously proposed in the literature. NS-FAIDs are optimized by density evolution for regular and irregular LDPC codes, and are shown to provide different trade-offs between hardware complexity and decoding performance. Two hardware architectures targeting high-throughput applications are also proposed, integrating both Min-Sum (MS) and NS-FAID decoding kernels. ASIC post synthesis implementation results on 65nm CMOS technology show that NS-FAIDs yield significant improvements in the throughput to area ratio, by up to 58.75% with respect to the MS decoder, with even better or only slightly degraded error correction performance., Comment: Submitted to IEEE Transactions on VLSI
- Published
- 2017