基于多子波的码分多址方案

Multiwavelet-Based CDMA Scheme

将多子波的分析滤波器、预处理以及平衡化等方面的最新研究成果应用于通信领域 ,提出了多子波码分多址 (MW CDMA)通信方式的理论框架 .在MW CDMA方案中 ,首先由多子波分析滤波器将接收信号分解到相互正交的子空间上 ,然后在各个子空间中进行解码 .理论分析和实验结果表明这种系统可以很好地抑制多址干扰和环境噪声 ,同时也为减少解码的计算量提供了新的思路 .

A multiwavelets-based code-division multiple-access (MW-CDMA) scheme is presented based on the application of recent results in multiwavelet filter, preprocessing and balancing to communications area. In MW-CDMA, at first, the received signal is decomposed into the components in the orthogonal wavelet spaces, and then the multiuser demodulation is implemented in each wavelet spaces. Theoretical analysis and experimental results show that MW-CDMA systems suppress multiple-access interference and ambient noise well. Moreover, the scheme gives a new guideline to reduce the computation for demodulation.