约束长度 meaning in English

constraint length

Encoding constraint length
编码约束长度
Decoding constraint length
译码约束长度
We put the emphases on the soft output viterbi algorithm ( sova ) , which is one of turbo code ’ s decoding algorithms , and presents the derivation and computation step of the sova decoding algorithm . after presenting sova and map decoding algorithms and analyzing four kinds of decoding algorithms , the paper makes a comparison among the different decoding algorithms by emulation analysis , and analyzes the time complexity of various algorithms , and then contrasts them . in the last part of this paper , according to the criterion recommended by the consultative committee for space data systems ( ccsds ) , including code rate ,
根据空间数据系统顾问委员会( ccsds )为turbo码应用于深空通信系统推荐的标准,包括码率、码块大小、分量码类型、约束长度、码生成多项式,以及交织器的选择等参数的建议以及sova译码算法的理论基础,设计了sova算法的实现结构,通过仿真验证了本文所采用的turbo码的性能,从而证明turbo码确实是一种很好的信道纠错编码方式,它适用于要求功耗低或信噪比低的深空通信系统中。