Low-power design of variable block-size LDPC decoder using nanometer technology

Abstract

This paper presents a low-power, variable block-size and irregular LDPC decoding. Our proposed LDPC decoder uses nanometer technology running the well-known TDMP and SMSA decoding algorithm. We further improved the design with pipeline structure, parallel computation and without any memory unit. Therefore, we can utilize only one routing network to route three different block-size data. The prototype architecture is being implemented on 90 nm VLSI technology. Because this VLSI technology has multi-Vth layers, we can make the design more effective. Compared to recent state-of-the-art architectures, the proposed variable block-size LDPC decoder has 450 MHz clock frequency, 349.48 K gate counts, 168 mW power dissipation, and 1.215 Gbps throughput.