CAJ | 학술논문

递归系统卷积码(RSC码)是Turbo码子编码器常采用的编码形式。针对(n,1,m)递归系统卷积码的盲识别问题,给出了完整的编码参数和生成多项式识别方法。首先,采用矩阵分析法先求得卷积码参数,避免后续识别生成多项式时因参数循环估计带来的额外计算量。然后,根据RSC码的特性推导出生成多项式识别模型,给出了模型的具体求解步骤,并对所采用的Walsh-Hadamard变换算法进行了介绍。最后,运用Matlab平台进行仿真验证。仿真结果表明,该方法容错性能明显优于常规方法,在误码率为10-2条件下成功识别概率能达到90%,对于Turbo码的进一步研究具有重要意义。
체귀계통권적마(RSC마)시Turbo마자편마기상채용적편마형식。침대(n,1,m)체귀계통권적마적맹식별문제,급출료완정적편마삼수화생성다항식식별방법。수선,채용구진분석법선구득권적마삼수,피면후속식별생성다항식시인삼수순배고계대래적액외계산량。연후,근거RSC마적특성추도출생성다항식식별모형,급출료모형적구체구해보취,병대소채용적Walsh-Hadamard변환산법진행료개소。최후,운용Matlab평태진행방진험증。방진결과표명,해방법용착성능명현우우상규방법,재오마솔위10-2조건하성공식별개솔능체도90%,대우Turbo마적진일보연구구유중요의의。
Recursive system convolutional code( RSC code) is the commonly used encoding form of Turbo sub-encoders. For the blind recognition problem of (n,1,m) RSC code,a method based on Walsh-Had-amard transform is proposed. Firstly,code parameters are estimated by analyzing matrix constructed by the received codeword. Then,the mathematical recognition model is derived according to RSC code’s charac-teristics,the specific implementation steps are provided and the principle of the method is introduced. The simulation results from Matlab show that the performance of the method is obviously more excellent in com-parison with other methods. The recognition probability reaches 90% when bit error rate( BER) is as high as 10-2 ,which indicates the great significance of the proposed method for further research on Turbo code.