摘要
为充分利用信道信息(Channel State Information,CSI)来改善准正交空时码(Quasi Orthogonal Space-TimeBlock Code,QSTBC)系统的性能,提出基于天线选择的QSTBC系统自适应设计方案,对QSTBC的编码结构添加自适应系数,使信道矩阵正交化,消除码间串扰。推导了系统的瞬时输出信噪比,以此作为天线选择准则。仿真结果表明,相对于未经过自适应编码设计的天线选择QSTBC系统,新系统的误码率性能有明显改善。
In order to make full use of channel information （CSI） to improve quasi-orthogonal space-time block code （QSTBC） system performance, a self -adaptive scheme based on antenna selection is presented, in which self-adaptive coefficients are added to QSTBC coding structure to make channel matrix orthogonal and erase inter-symbol interference for the systems. The expression of instantaneous output signal-to-noise ratio （IO-SNR） is given and served as antennas selection criteria. Simulation results show that compared with the antenna selection without selfadaptive code design, the BER performance of the novel antenna selection QSTBC system has been improved significantly.
出处
《中国航海》
CSCD
北大核心
2009年第4期9-12,共4页
Navigation of China
基金
福建省自然科学基金资助项目(2009JD1292)
福建省教育厅项目(JA08142
JB07133)
关键词
船舶
舰船工程
天线选择
选择准则
准正交空时分组码
自适应
瞬时信噪比
ship, naval engineering
antenna selection
selection criteria
quasi-orthogonal space-time block code
self adaptive
instantaneous signal-to-noise ratio
