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Analysis and Design of Cost-Effective, High-Throughput LDPC Decoders

Analysis and Design of Cost-Effective, High-Throughput LDPC Decoders

Price : 13000

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Course Duration
Approx 10

Course Price
₹ 13000

Course Level
Beginner

Course Content

Analysis and Design of Cost-Effective, High-Throughput LDPC Decoders

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 nonsurjective 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 tradeoffs 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 65-nm 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.

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