摘要
在深入研究ADSL的DMT调制的基础上,提出把带通滤波与盲信号分离相结合,把混合ADSL信号分离问题转化成同频MQAM混合信号分离问题。仿真选择扩展最大似然算法分离两个同频16QAM信号的线性瞬时混合信号。理论与仿真都表明把盲信号分离用于混合ADSL信号分离是可行的。
Based on inspective study of DMT modulation, a novel means is presented to solve the problems in separating the forward and reverse signals. Considering the fact of that the modulation of ADSL is just MQAM modulation, ＂Extended Maximum Likelihood＂ separating algorithm is chosen to separate two mixed 16QAM signals with the same frequency. Conclusion is drawn after system simulation.
出处
《电视技术》
北大核心
2006年第4期56-58,共3页
Video Engineering
基金
国家自然科学基金资助项目(60172029)
关键词
混合ADSL信号
盲信号分离
扩展最大似然算法
mixed ADSL signals
blind signal separation
extended maximum likelihood algorithm
