摘要
对一种新的补沃尔什哈达码-M(CWH-M)二维码,在空频二维OCDMA系统中的应用进行了研究, 实现了该码字的编解码方案和系统设计．理论分析得到该二维码在理论上可以实现完全正交,彻底消除多用户干扰．仿真结果表明了基于CWH-M二维码OCDMA系统性能比采用一维编解码方案和采用简单开关控制的二维编解码方案有了显著提高。
A new tow-dimensional optical code with multiple-weight-per-row property and with cyclic relationship between codeword and its complement. The coding scheme and the spatial/frequency system configure is realized. The performance of the proposed system is analyzed. The theoretical analyse shows that, with this system, MAI can be perfectly cancelled and theoretically achieve quasiorthogonality between OCDMA users. The emulational result shows that the system performance can be improved compared to one-dimensi...
出处
《电子科技大学学报》
EI
CAS
CSCD
北大核心
2005年第S1期913-916,共4页
Journal of University of Electronic Science and Technology of China
关键词
补沃尔什哈达码-M矩阵
阵列波导光栅路由器
多用户干扰
光码分多址系统
complementary walsh hadamard-m matrices
arrayed-waveguide grating routers
multiple-access interference
optical code-division multiple access
