新型(2k,k,1)卷积码的构造  

Construction of a new class of(2k, k, 1) convolutional codes

作　　者：张承畅[1,2] 彭万权[3] 韦铂 

机构地区：[1]重庆邮电大学光电工程学院,重庆400065 [2]重庆大学通信与测控教育部重点实验室,重庆400030 [3]重庆工程职业技术学院,重庆400037

出　　处：《通信学报》2014年第6期200-206,共7页Journal on Communications

基　　金：国家自然科学基金资助项目(61263030);重庆市科委自然科学基金资助项目(cstc2013jcyjA40055);中央高校基本科研业务费基金资助项目(CDJZR12160018;CDJZR12160019)~~

摘　　要：结合双环循环码和(2,1,1)卷积码,构造了一类(2k,k,1)卷积码,获得了一种短码构造长码的新方法。通过定义一种状态转移矩阵,利用代数方法和格栅图,揭示了该码类的构造机理,发现其码字结构的均衡性与多样性俱佳,具有良好的距离特性。仿真实验表明,(2k,k,1)卷积码的纠错性能和译码速度相较于传统卷积码存有一定优势。A new class of （2k, k, 1） convolutiona! codes are created by combining double cyclic codes and （2,1,1） convolu- tional codes, and also a new method for creation long codes with short ones was proposed. The structural mechanism of the codes was revealed by defining a state transition matrix and using algebraic method as well as grille graph. This code structure was excellent in both proportionality and diversity, besides, the distance characteristics of it are also quite well. Simulation results show that, the （2k, k,1） convolutional codes present some advantages over the traditional one in error correction performance and decoding speed.

关 键 词：卷积码 状态转移矩阵 维特比译码 

分 类 号：TN911.22[电子电信—通信与信息系统]