里窩利路 的英文怎麼說
中文拼音 [lǐwōlìlù]
里窩利路
英文
rue de rivoli, paris-
Passepartout was now the only person left in the car, and the elder, looking him full in the face, reminded him that, two years after the assassination of joseph smith, the inspired prophet, brigham young, his successor, left nauvoo for the banks of the great salt lake, where, in the midst of that fertile region, directly on the route of the emigrants who crossed utah on their way to california, the new colony, thanks to the polygamy practised by the mormons, had flourished beyond expectation
這時，路路通成了這個車廂里獨一無二的聽眾了。維廉赫奇長老目不轉睛地注視著他，想要用言語開導他信教。於是繼續對他說：史密斯被害之後，又過了兩年，他的繼承人，受真主感召的先知小布里翰就離開了努窩拉貝爾，到這鹹湖沿岸一帶定居下來，這里是一片美麗的土地，周圍也全是肥沃的良田，這里是許多移民穿過猶他州到加利福尼亞去的陽關大道。The advantages of using leo satellite are as following : on the one hand the satellite orbit is low, so the transmission delay is short, the power loss is small ; on the other hand the development of cell communication, multi - access, frequency multiplex and etc also provide a technique guarantee to the leo satellite - mobile - telecommunication. so the leo system is considered to be a satellite - mobile - communication system with a great future
低軌道衛星是一種運行於1000公里左右的高空中的人造衛星，利用leo衛星實現個人通信的優點在於：一方面衛星的軌道高度低，使得傳輸延時短、路徑損耗小，多個衛星組成的星座可實現真正的全球覆蓋，頻率復用更有效：另一方面蜂窩通信、多址、點波束、頻率復用等技術的發展也為低軌道衛星移動通信提供了技術保障。Future wireless communication systems trend to provide multi - services to mobile users. cdma technique is adopted by the 3rd generation mobile communication systems due to its flexibility in supporting multi - services. how to keep qos of heterogeneous services and utilize the scarce radio spectrum resources is challenging for 3rd generation mobile communication systems in this thesis we developed a radio resource allocation framework for wireless code division access ( cdma ) networks that support multi - class traffic with different data rates and bit error rate requirements. we proposed a new resource allocation scheme using joint adaptive power control and mmse multiuser receiver in multipath fading system
為移動用戶提供多種業務服務是未來無線通信網路的主要發展方向。由於cdma技術具有靈活支持多種業務的優點，因而被第三代移動通信系統所采納。如何在惡劣的無線傳播環境里以及用戶運動且相互干擾的情況下為為各類業務提供qos保證，同時充分利用珍貴的無線頻譜資源，是基於cdma技術的第三代蜂窩通信系統必須致力解決的問題。
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