【摘要】 针对Turbo码在译码过程中迭代次数不确定的缺点,提出了一种新的改进算法,通过对附加信息(译码器的先验信息)间的距离度量作为迭代终止的判定。仿真试验表明,该改进算法能在保证译码的准确性基础上,避免了大量无畏的计算,提高译码速度,尤其在信噪比较大的情况下,效果更为明显。更多还原

【Abstract】 A new improved algorithm is presented for Turbo codes’ uncertainty iteration number.With the distance of the extrinsic information,apriority,between two decoders as the criterion,this algorithm can self_adaptive adjust iteration to achieve required performance,also it can reduce considerable complexity of decoding process,and accelerate decoding.Simulation proves this algorithm efficiency,especially at high SNR.更多还原