基于蒙特卡罗仿真的LDPC解码器功耗分析方法

LDPC Decoder Power Analysis Method Based on Monte Carlo Simulation

精确评估LDPC解码器在不同信噪比下的功耗需要在门级仿真大量的随机输入向量,以致耗费大量时间。通过对解码算法进行定点化的蒙特卡罗仿真可以方便地得到不同信噪比下的误码率和平均迭代次数。该文结合门级仿真与蒙特卡罗仿真,方便快速地得到LDPC解码器在不同信噪比下较为精确的功耗。通过对IEEE802.16e中一个LDPC码的实验,证明了该方法的可行性和有效性。

To get the accurate LDPC decoder power analysis, large numbers of random input vectors should be simulated on gate-level, which consumes a lot of time. However, bit error rate and average iteration number on various signal-to-noise ratios can be easily got by fixed point Monte Carlo simulation on the decoding algorithms. Accurate power analysis can be calculated conveniently and efficiently with gate level simulation and Monte Carlo simulation combined. It is approved to be practical and efficient by power analysis on an LDPC code in IEEE802.16e.