中国航海
中國航海
중국항해
NAVIGATION OF CHINA
2009年
4期
9-12
,共4页
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
船舶、艦船工程%天線選擇%選擇準則%準正交空時分組碼%自適應%瞬時信譟比
선박、함선공정%천선선택%선택준칙%준정교공시분조마%자괄응%순시신조비
ship,naval engineering%antenna selection%selection criteria%quasi-orthogonal space-time block code%self-adaptive%instantaneous signal-to-noise ratio
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-Time Block 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.
為充分利用信道信息(Channel State Information,CSI)來改善準正交空時碼(Quasi Orthogonal Space-Time Block Code,QSTBC)繫統的性能,提齣基于天線選擇的QSTBC繫統自適應設計方案,對QSTBC的編碼結構添加自適應繫數,使信道矩陣正交化,消除碼間串擾.推導瞭繫統的瞬時輸齣信譟比,以此作為天線選擇準則.倣真結果錶明,相對于未經過自適應編碼設計的天線選擇QSTBC繫統,新繫統的誤碼率性能有明顯改善.
위충분이용신도신식(Channel State Information,CSI)래개선준정교공시마(Quasi Orthogonal Space-Time Block Code,QSTBC)계통적성능,제출기우천선선택적QSTBC계통자괄응설계방안,대QSTBC적편마결구첨가자괄응계수,사신도구진정교화,소제마간천우.추도료계통적순시수출신조비,이차작위천선선택준칙.방진결과표명,상대우미경과자괄응편마설계적천선선택QSTBC계통,신계통적오마솔성능유명현개선.
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-adap-tive 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.
