【熱門商品】PRINCIPLES OF COMMUNICATION SYSTEMS SIMULATION WITH WIRELESS APPLICATIONS~暢銷書籍





 





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【熱門商品】PRINCIPLES OF COMMUNICATION SYSTEMS SIMULATION WITH WIRELESS APPLICATIONS~暢銷書籍推薦好書必買




商品訊息功能:


商品訊息描述: 好康活動限時下殺精選優惠大力推薦 This book presents a comprehensive overview of computer-based simulation models and methodologies for communication systems. Because such models are a useful and necessary tool in the design, analysis, and performance of communication systems as well as a means of evaluating design changes in these systems, Computer Aided Design and Analysis of Communication Systems with Wireless Applications uses MATLAB as a basis for developing effective computer-based simulations. Such simulations are intended to capture the essential features of the system to assure accurate results while minimizing the complexity of the model, ensuring execution of the simulation code in a reasonable amount of time. Among the fundamental topics covered are probability, random, process, and estimation theory and their roles in the design of computer-based simulations.Preface.I. INTRODUCTION. 1. The Role of Simulation. Examples of Complexity. Multidisciplinary Aspects of Simulation. Models. Deterministic and Stochastic Simulations. The Role of Simulation. Software Packages for Simulation. A Word of Warning. The Use of MATLAB. Outline of the Book. Further Reading. 2. Simulation Methodology. Introduction. Aspects of Methodology. Performance Estimation. Summary. Further Reading. Problems. II. FUNDAMENTAL CONCEPTS AND TECHNIQUES. 3. Sampling and Quantizing. Sampling. Quantizing. Reconstruction and Interpolation. The Simulation Sampling Frequency. Summary. Further Reading. References. Problems. 4. Lowpass Simulation Models for Bandpass Signals and Systems. The Lowpass Complex Envelope for Bandpass Signals. Linear Bandpass Systems. Multicarrier Signals. Nonlinear and Time-Varying Systems. Summary. Further Reading. References. Problems. Appendix A: MATLAB Program QAMDEMO. Appendix B: Proof of Input-Output Relationship. 5. Filter Models and Simulation Techniques. Introduction. IIR and FIR Filters. IIR and FIR Filter Implementations. IIR Filters: Synthesis Techniques and Filter Characteristics. FIR Filters: Synthesis Techniques and Filter Characteristics. Summary. Further Reading. References. Problems. Appendix A: Raised Cosine Pulse Example. Appendix B: Square Root Raised Cosine Pulse Example. Appendix C: MATLAB Code and Data for Example 5.11. 6. Case Study: Phase-Locked Loops and Differential Equation Methods. Basic Phase-Locked Loop Concepts. First-Order and Second-Order Loops. Case Study: Simulating the PLL. Solving Differential Equations Using Simulation. Summary. Further Reading. References. Problems. Appendix A: PLL Simulation Program. Appendix B: Preprocessor for PLL Example Simulation. Appendix C: PLL Postprocessor. Appendix D: MATLAB Code for Example 6.3. 7. Generating and Processing Random Signals. Stationary and Ergodic Processes. Uniform Random Number Generators. Mapping Uniform RVs to an Arbitrary pdf. Generating Uncorrelated Gaussian Random Numbers. Generating Correlated Gaussian Random Numbers. Establishing a pdf and a PSD. PN Sequence Generators. Signal Processing. Summary. Further Reading. References. Problems. Appendix A: MATLAB Code for Example 7.11. Main Program: c7 Jakes.2019熱銷產品m. 8. Postprocessing. Basic Graphical Techniques. Estimation. Coding. Summary. Further Reading. References. Problems. Appendix A: MATLAB Code for Example 8.1. 9. Introduction to Monte Carlo Methods. Fundamental Concepts. Application to Communications Systems—The AWGN Channel. Monte Carlo Integration. Summary. Further Reading. References. Problems. 10. Monte Carlo Simulation of Communication Systems. Two Monte Carlo Examples. Semianalytic Techniques. Summary. References. Problems. Appendix A: Simulation Code for Example 10.1. Appendix B: Simulation Code for Example 10.2. Appendix C: Simulation Code for Example 10.3. Appendix D: Simulation Code for Example 10.4. 11. Methodology for Simulating a Wireless System. System-Level Simplifications and Sampling Rate Considerations. Overall Methodology. Summary. Further Reading. References. Problems. III. ADVANCED MODELS AND SIMULATION TECHNIQUES. 12. Modeling and Simulation of Nonlinearities. Introduction. Modeling and Simulation of Memoryless Nonlinearities. Modeling and Simulation of Nonlinearities with Memory. Techniques for Solving Nonlinear Differential Equations. PLL Example. Summary. Further Reading. References. Problems. Appendix A: Saleh's Model. Appendix B: MATLAB Code for Example 12.2. 13. Modeling and Simulation of Time-Varying Systems. Introduction. Models for LTV Systems. Random Process Models. Simulation Models for LTV Systems. MATLAB Examples. Summary. Fur特惠組合ther Reading. References. Problems. Appendix A: Code for MATLAB Example 1. Appendix B: Code for MATLAB Example 2. 14. Modeling and Simulation of Waveform Channels. Introduction. Wired and Guided Wave Channels. Radio Channels. Multipath Fading Channels. Modeling Multipath Fading Channels. Random Process Models. Simulation Methodology. Summary. Further Reading. References. Problems. Appendix A: MATLAB Code for Example 14.1. Appendix B: MATLAB Code for Example 14.2. 15. Discrete Channel Models. Introduction. Discrete Memoryless Channel Models. Markov Models for Discrete Channels with Memory. Example HMMs—Gilbert and Fritchman Models. Estimation of Markov Model Parameters. Two Examples. Summary. Further Reading. References. Problems. Appendix A: Error Vector Generation. Appendix B: The Baum-Welch Algorithm. Appendix C: The Semi團購-Hidden Markov Model. Appendix D: Run-Length Code Generation. Appendix E: Determination of Error-Free Distribution. 16. Efficient Simulation Techniques. Tail Extrapolation. pdf Estimators. Importance Sampling. Summary. Further Reading. References. Problems. Appendix A: MATLAB Code for Example 16.3. 17. Case Study: Simulation of a Cellular Radio System. Introduction. Cellular Radio System. Simulation Methodology. Summary. Further Reading. References. Problems. Appendix A: Program for Generating the Erlang B Chart. Appendix B: Initialization Code for Simulation. Appendix C: Modeling Co-Channel Interference. Appendix D: MATLAB Code for Wilkinson's Method. 18. Two Example Simulations. A Code-Division Multiple Access System. FDM System with a Nonlinear Satellite Transponder. References. Appendix A: MATLAB Code for CDMA Example. Appendix B: Preprocessors for CDMA Application. Appendix C: MATLAB Function c18 errvector.m. Appendix D: MATLAB Code for Satellite FDM Example. Index. About The Authors.

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商品訊息簡述:

  • 出版社:全華圖書   
    新功能介紹
  • 出版日期:2004/01/15
  • 語言:英文


 


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川普將訪英國 屢發挑釁言語歐洲盟友頭痛 | 國際焦點 | 全球 | 聯合新聞網
川普3日將訪問英國。 美聯社 分享 facebook 美國總統川普3日將訪問英國,近年他與歐洲領袖見面總是發出挑釁言語,不僅唱衰英國脫歐協議、批評德國是俄羅斯俘虜,更酸法國到處都有暴動,讓美歐盟友關係趨於混亂。特賣會便宜團購川普將於6月3日抵達英國展開3天國是訪問,面對英國首相梅伊(Theresa May)將在6月7日下台,他與過往一樣,人未到就先對英國最近流行商品送禮酒推薦內政指指點點。他告訴「太陽報」(The Sun),前英國外相強生(BorisJohnson)會做得很好,「我認為他很棒,很有才華,對於我和我的國家也很友善」。. } }); } 川普愛對英國內政發表評論,特別在脫歐議題上,他曾唱衰梅伊的脫歐協議「對歐盟聽起來是很棒的協議」。2018年訪英時與梅伊會面後自曝曾建議如何處理歐盟事務,但是她「沒聽我的話」,後來梅伊揭曉川普建議是控告歐盟,而不要與他們談判。此外,川普對歐盟二大核心德國及法國領袖,也多次毫不留情面發出批評之語,例如2018年7月在北大西洋公約組織(NATO)會議上,他尖銳抨擊德國因為天然氣而淪為莫斯科的「俘虜」,引來梅克爾(AngelaMerkel)以「決策獨立自主」反擊川普。面對法國,川普2018年11月在巴黎出席第一次世界大戰停戰百年紀念活動,但一抵達就在推特(Twitter)發文指馬克宏說歐洲要建歐洲軍隊以防禦美國、中國與俄羅斯,是種「侮辱」,隨後12月他針對法國的「黃背心」運動酸言酸語表示 「對於巴黎來說,巴黎協定推行得不太順利,法國到處都有抗議和暴動」。而這次川普訪英另一個話題就是盟友對禁用華為不同調,雖然美國放話對於使用華為生產「不安全」5G網路設備的國家將可能不會分享敏感的國安情資。歐洲目前對華為並未像美國全力封殺,英國先前傳出可能允好康報報省錢王許華為有限度參與5G建設、德國則表示沒有計畫排除任何公司參與5G頻譜拍賣,但會要求投標業者必須符合一些規定。目前美國國務卿蓬佩奧(Mike Pompeo)正在歐洲,陸續訪問德國、瑞士、荷蘭與英國,他承認華為將是前往每一國都會談及流行購買議題,屆時川普訪英時是否也會對盟友發出警語令人矚目。


 日本孤獨死案例增加 遺物創造新二手商機


日本每年約有3萬人死亡時身邊沒有家人,稱為「孤獨死」,因此了衍生出遺物整理員這個新興產業,除了幫往生的人整理遺物,有些東西丟掉可惜,跟二手商機作結合,每年收益高達近5000億台幣。


家中有長輩年老病逝,家屬悲慟過後,下一步就是整理親人遺物,面對滿屋子遺物,就怕親屬賭物思情,又或者獨居老人身邊已經沒有親人能整理,日本因此誕生了一個新興行業叫做遺物整理士,什麼遺物該留、什麼該丟,遺物整理士都得小心翼翼,考慮到家屬的心情。根據統計,日本高齡獨居人數逐年增高,而每年日本125萬名死者中有3萬人是在「孤獨死」狀態下被發現,而遺物整理士就是最接近「孤獨死」的那群人。


委託親屬:「哥哥因為是一個人,像是看護啊,已經做好未來要照顧哥哥的覺悟,互相倚賴,但是他卻突然驟逝。」


時代不斷在演變,「孤獨死」長者的遺物,竟然創造出遺物商機,部分清潔公司會把有價值的物品在整理過後轉賣到二手市場。


遺物整理公司社長橫尾將臣:「這裡是二手品,買下能買的商品,整理後再販售。」


別以為二手物品不值錢,2016年日本二手商品產業總收益達160億美元,約台幣4948億元,利潤豐厚,甚至打著「日本製造」旗幟進軍海外,其中更以菲律賓為日本二手貨重要散貨地,2017年日本二手商品商Hamaya,過去20年來向東南亞輸出2465個貨櫃,商品包括單車、影音設備、家電等,更在8個國家開設62個零售店,有的店家在柬埔寨開了10家分店,或進軍馬來西亞大型購物商場,有的甚至外銷到非洲。


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