去年，西尔弗曼与前大英博物馆的照片和绘画管理人尼古拉斯·透纳博士（Dr Nicholas Turner）讨论过这幅画像，之后他认为画像背后有更多故事并进行了深入研究。
Silverman believed there was more to the portrait and delved into the matter after a discussion last year with Dr Nicholas Turner, formerly the keeper of prints and drawings at the British Museum.
针对模式匹配法的收敛问题和基函数的选取理论进行了深入研究与讨论。
The problem of relative convergence and the theory of determining proper basis functions are investigated and discussed in depth.
接着，本论文对OFDM和多载波cdma的系统结构进行了讨论，对多载波cdma系统中的导频信道估计技术进行了深入研究。
Next, the system structure of OFDM and multi-carrier system are discussed, followed by the pilot based channel estimation for the multi-carrier CDMA systems.
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