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題 名 | Multipath Fading Channels: Characteristics and Simulation Models=多路徑衰落通道之特性與電腦模擬 |
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作 者 | 張瑞淇; 沈文和; 施志達; | 書刊名 | 電信研究 |
卷 期 | 23:3 1993.06[民82.06] |
頁 次 | 頁281-300 |
分類號 | 448.6 |
關鍵詞 | 多路徑; 通道; 電腦; 模擬; |
語 文 | 英文(English) |
中文摘要 | 本篇報告旨在探討多路徑衰落通道的特性與電腦模擬的方法,文中首先回顧多路徑衰落通道的重要特性,例如:衰落信號包封(Envelope)與相位(Phase)的機率分佈、衰落信號的相關函數(Correlation Function)與頻譜密度函數(Spetrum Density Function);隨後提出無線通道的延遲線模型(Tapped Delay Line Model),並依據通道的參數分析無線電通道的分類。文中後半部分提出三種多路徑衰落通道電腦模擬的方法和模擬的結果,包括非頻率選擇性多路徑衰落通道、獨立性散射之頻率選擇性多路徑衰落通道、相關性散射之頻率選擇性多路徑衰落通道。這些電腦模擬程式均建在信號處理工作系統(Signal Procssing Worksystem, SPW),可用於通信系統的電腦輔助模擬與設計。 |
英文摘要 | In this technical report, the characteristics and modeling of multipath fading channels are presented. We first review some characteristics of fading channels such as the probability distribution of fading signal envelope and phase, time and frequency selectivities. Then three types of multipath fading channel simulators which are often encountered in cellular radio communications are presented, including nonselective multipath fading channel simulations are presemted, including nonselective multipath fading channel simulator, frequency selective multipath fading channel simulator with independent scattering and frequency selective multipath fading channel with dependent scattering. These fading channel simulators are implemented on SPW (Signal Processing Worksystem) which is a block-oriented system simulator, and will be useful in computer-aided modeling and design of communication systems under multipath fading environment. |
本系統中英文摘要資訊取自各篇刊載內容。