Enhanced Throughput and Energy-Efficient MRAM-Based NB-LDPC Decoder

In this paper, an adaptive and efficient memorization system based on Spin-Transfer-Torque Magneto-resistive Random Access Memory (STT-MRAM) is proposed to be implemented within Non Binary-Low Density Parity Check (NB-LDPC) Decoder. Based on the available MRAM types and array dimensions, new data mapping and efficient structure of the memorization system are proposed. The power consumption of the NB-LDPC decoder with STT-MRAM is evaluated and compared to the Static Random Access Memory (SRAM)-based one. Simulation results show that the proposed memorization system offers an energy reduction that reaches 73.35% for MRAM type I and 65.15% for MRAM type II. Moreover MRAM type I increases the throughput by 21.05% and MRAM type II by 43.75% for the NB-LDPC Decoder.