Combined with the data - selected schemes proposed, the computational complexity of this method can be lowered. the performance of the presented rls method is analyzed by simulations, and it is shown that this method is interesting for application. 4 time - selective channel signal model based on multipath - doppler diversity representation is given in multi - path fast fading channel, and rls space - time receiver algorithm based on time - varied constraint condition is presented and the computational complexity of this method is analyzed
4 、針對多徑快衰落通道下的ds - cdma系統,給出了基
於多徑-多譜勒觀點描述的1百安電弓卜科東
兔j憶學協士學位論文時間選擇性通道的信號模型,提出了基
於變約束條件下的遞歸最小
二乘空時接收機演算法並分析演算法的運算量,最後通過模擬分析了所提出的方法的性能。
Two types of fibroblast cells were used as donor control, one derived from ear skin of an adult kunming albino mouse, and the other derived from a mouse fetus. three types of cells were transferred into perivitelline space under zona pellucida of rabbit oocytes respectively. the reconstructed oocytes were fused and activated by electric pulses, and cultured in vitro
用二次電脈沖加6 - dmap聯合激活或單獨用二次電脈沖激活小鼠胚胎幹細胞-兔卵母細胞異種重構卵時,聯合激活組的卵裂率是86 . 2 ,明顯高於單用二次電脈沖組( 64 . 2 , p 0 . 05 ) ,囊胚形成率分別為17 . 0和13 . 4 ,兩組間沒有顯著差異( p 0 . 05 ) 。