band origin 中文意思是什麼
band origin
解釋
譜帶基線-
There are mainly three arguments on the physical origin of the new conduction band minimum of ganas ( or galnnas ). they are band anti - crossing model, gaas conduction band mixing model and impurity band model
關于ganas的導帶帶邊的物理本質，目前主要有三種爭論較激烈的觀點，它們分別是能帶反交叉模型， gaas導帶混合模型，雜質帶模型。 -
Referring to the formation process of qd, it is accepted that there formed a groove around the dot during the formation process due to mass - transfer. when the dots were capped by a compound with larger band gap, there will appear a potential maximum due to larger confinement. the maximum will prevent the carriers from entering the dot, and the origin of the kink point is resulted from the prevention
根據s - k模式量子點的形成過程，我們認為在點的形成過程中由於質量遷移會在點的周圍形成一個凹槽，加上覆蓋層后，由於大的量子限域效應該處將形成一個勢能極大值，該勢能極大值將阻礙載流子從勢壘層向量子點的注入，該過程是導致上述拐點出現的原因。 -
This paper divides into six chapters : the first chapter - base on the analyses of the origin, conception and development status of sr, this chapter discusses the key technology and realize difficulties of sr and advances the intention and meaning of the paper. the second chaptei - the sr system with radio frequency band - pass sampling architecture is a design scheme close to software wireless radio ( swr ), this chapter introduces three system architecture of sr system and analyses the theory of radio frequency band - pass sampling. the third chapter - this chapter analyses and designs the dsp hardware platform with radio frequency band - pass sampling architecture
本論文分為六章：第一章在分析軟體無線電的起源、概念、發展概況的基礎上，闡述了軟體無線電的關鍵技術及實現難點，提出了本論文研究的目的與意義；第二章射頻直接帶通采樣軟體無線電結構是接近理想化的軟體無線電設計方案，本章對軟體無線電系統的體系結構及射頻直接帶通采樣原理進行了分析；第三章分析並設計了射頻直接帶通采樣結構軟體軟體無線電系統的dsp硬體平臺；第四章研究了調制解調及信號調制樣式的識別演算法並給出了dsp實現，這是在dsp平臺上實現軟體無線電功能的一種常規方法；第五章分析了應用快速原型技術開發軟體無線電系統的必要性及可行性，完成了軟體無線電系統的matlab模擬及結合ti公司的tms320c6711dsk板的快速原型實現，這也是本論文提出的軟體無線電的一種新的研究方法。
分享友人