摘要
自适应传输系统的调制、码元速率根据信道状态自动调节 ,这样可以挖掘信道传输潜力 .在这种通信系统中以时延扩展和信干比为代表的无线传播特性的实时在线估计与预测非常重要 .文中提出了一种适用于自适应传输系统的无线传播特性实时估计方案 ,采用短伪随机码相关和降维信号子空间分解进行无线传播特性的实时估计与预测 .
In service or instantaneous estimation and prediction of radio propagation condition characterized by delay spread (τ rms ) and the ratio of signal to interference plus noise ( SINR ) are improtant to adaptive communication system whose modulation level and symbol rate can be adjusted according to channel condition to explore the potential ability of transmission. A novel scheme employing the short PN correlation and dimension reduced signal subspace decomposition method to estimate τ rms and SINR is proposed in this paper. It is demonstrated by computer simulation that this proposed scheme can achieve satisfactory result.
出处
《西安电子科技大学学报》
EI
CAS
CSCD
北大核心
2001年第2期137-141,146,共6页
Journal of Xidian University
基金
国家自然科学基金资助项目 !( 6 9872 0 2 8)
高等学校青年骨干教师计划资助项目
