The 6 ∶ 8 constant weight modulation code ( CWMC) is an effective channel code for the holographic storage channel. 6∶8等重调制码是全息存储记录通道中的一种有效通道码。
Design of Gray-Mapped Constant Weight Modulation Code for Digital Holographic Data Storage System 数字全息数据存储系统中的格雷映射等重调制码的设计
It is proven that the extended double-error-correcting BCH codes are proper for pure error-detection, and the ( 2m. 2. m) nonlinear constant weight code for m4 are not. 在只检错时,证明了纠正两个错误扩展BCH码是最佳检错码;m大于4的非线性等重码(2m,2,m)不是最佳码。
Design of 6 ∶ 8 Optimal-mapping Constant Weight Modulation Code by Multistage Decision Method 多阶段决策方法用于6∶8优化映射等重调制码的设计
Using a binary-mapped constant weight modulation code ( BCWMC) for the recording channel of a digital holographic data storage system can facilitate the decision on the detected signal. 在数字全息数据存储系统的记录通道中,使用二进制映射等重调制码有利于信号的检测。
The authors propose a new modulation coding scheme, 6:8 Gray-mapped constant weight modulation code ( GCWMC), in which each digital data having length 6 is viewed as a Gray codeword and the constant weight code is designed with a characteristic of binary 2-unit distance. 本文作者提出了6:8格雷映射等重调制码的编码方案,将每6比特数据视为一个格雷码字,而相应的等重码设计为具有2单位距离特性。
It is proved that any linear constant weight code is weakly equivalent to the Walsh-Hadamard code. 证明了一切线性等重码都弱等价于Walsh&Hadamard码。
In this paper, we prove, with the help of the relationship between the dual distance and the correlation-immune order, that the dual distance of constant weight code is equal to 1 or 2. 本文借助于对偶距离和相关免疫阶的关系,证明了等重码的对偶距离为1或2。
Therefore, a 6 ∶ 8 optimal mapping constant weight modulation code ( OCWMC) is designed by the multistage decision method and the greedy algorithm. 作者借助多阶段决策方法和贪心算法,设计出一种6∶8优化映射等重调制码(OCWMC)。