一种Turbo码中伪随机交织器的盲识别方法

目前Turbo码的构造中广泛应用的是伪随机交织器,要完成对Turbo码的识别,必不可少地需要得到伪随机交织器的参数。针对伪随机交织器的识别问题,通过引入扩频通信中PN序列盲估计的方法,利用功率谱二次处理法求出交织长度即m序列周期,再用特征分解方法对序列进行估计。仿真实验表明,该方法能够求出m序列的相关参数,完成对伪随机交织器的识别需求。

A Blind Recongnition Method of Pseudo-random Interleaver on Turbo Code

The pseudo-random interleaver is used widely on the Turbo code at present.If the Turbo code is wanted to recongnize,it should have to get the parameter of pseudo-random interleaver.Aiming at the problem of estimation for pseudo -random interleaver,the method of matrix eigenvalue decomposion and reprocessing of the power spectrum for estimating PN sequence is applied to identify the pseudo-random sequence.The result of computer simulation show that these methods can get the parameter of m-sequence and finish the recongnition of pseudo-random interleaver.