1) constant weight code
等重码
1.
In this paper, the rth generalized Hamming weight and its function polynomial of maximum code are presented based on the code matrix of maximum code with constant weight and distance for (n,2,w), and [(2k-1)m,k,2k-1] constant weight code can reach Gresmer bound according to the generalized Hamming weights.
并根据广义Hamming重量 ,[(2 k- 1)m ,k ,2 k-1]等重码能达到Gresmer界。
2.
In this paper,a new time-hopping UWB modulation method called multi-pulse position modulation (MPPM) constructed by constant weight code (CWC) is proposed.
在已有的单脉冲位置调制的基础上,利用等重码构建了一种多脉冲位置调制的UWB跳时调制方案;并对其AWGN下的信道容量、误码率等性能指标进行了理论分析。
3.
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 。
2) r equiweight code
r-等重码
3) quasi-constant weight codes
拟等重码
1.
Error-detecting capability for quasi-constant weight codes;
线性拟等重码的检错性能
4) equidistant constant weight codes
等重等距码
1.
Q-transform of distance distribution of binary equidistant codes and equidistant constant weight codes were studied.
研究了二元等距码、等重等距码及其距离分布的Q-变换。
5) extending constant weight code(ECWC)
扩展等重码
6) binary constant weight codes
二元等重码
1.
The problems of maximum number of codewords for binary constant weight codes are studied by(employing) the theory of Johnson Schemes.
本文利用Johnson Schemes理论研究了二元等重码及其最大码字数问题。
2.
Bounds of undetected error probability(UEP) for binary constant weight codes(BCWCs) are studied in this paper.
本文研究了二元等重码不可检错误概率(UEP)的界。
补充资料：HP-241B色带打码机/HP-30手动打码机
适用材料：
塑料薄膜PT、PE、PVC、OPP、KT、铝箔、饮料瓶商标；各种塑料复合材料、塑料袋、纸（不干胶、卡片）、皮革、布；包装容器袋、塑料制品；电子元件外壳。
工作原理及结构特点：
采用热打印带代替油墨打印，采取特殊的活字装卸换字结构，可在任何软包装材料上打印。印字清晰，不易擦掉；卫生干净，无油墨污染之优，是一种经济卫生的打印方式。
HP-241技术参数：
最高速度：70-120次/分 可调
打印间距：任意
打印行数：1-3行
电 压：220V±10% 50Hz
功 率：200W
热打印带宽度：25-35mm
HP-30技术参数：
电 源：220V/50Hz
功 率：≤40W
尺 寸：225×200×155mm
重 量：2.5kg
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条