含错扰码序列生成多项式的快速恢复方法

含错扰码序列生成多项式的恢复是扰码盲识别的基础,针对扰码序列生成多项式恢复过程中计算量过大等问题,提出一种快速恢复序列生成多项式的方法。首先根据扰码序列的自相关性识别出序列周期,进而判定生成多项式的阶数,并获得该阶数下的本原多项式集,再基于信源序列的不平衡性遍历搜索本原多项式集中的统计量最大值,从而求得含错扰码序列的生成多项式。仿真结果表明该方法能快速有效实现含错扰码序列的生成多项式的恢复。

The Recognition of the Interleaving Style Based on the Generalized Code Weight Distribution

The reconstruction of the scrambling polynomial is the base of scrambler blind recogni- tion in the condition of non-cooperative context, in order to reduce the computation about the re- construction of the scrambling polynomial, a fast scheme is proposed. Firstly, the period is rec- ognized via the auto correction function（ACF）, so the order and the assembler of the primitive polynomial is known, then on the base of the biased resource and exhausted search the primitive polynomial assembler and the maximum are The simulation shows the method could fulfill and efficiently. got with this scrambling polynomial reconstructed. the reconstruction of the scrambling polynomial fast