free ed
free ed-
We also search the powerful TCM codes for minimal encoders , and find that in some cases the minimal encoders can reach the maximum free ED while the systematic encoders with the same parity-check polynomials can not .
发现对于由相同一致校验矩阵衍生得到的系统TCM码和最小TCM码，在某些情况下前者不能达到最大欧氏自由距，而后者能够达到。
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The results indicate that the best TCM codes with maximum free Euclidian Distance ( ED ) are more than one for a given constraint length and modulation scheme .
搜索结果表明，对一定约束长度和调制方式，具有最大欧氏自由距的TCM好码有多个，文中给出了具有最简编码器结构的TCM好码。