Key Technologies for 5G Wireless Systems

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Gain a detailed understanding of the protocols, network architectures and techniques being considered for 5G wireless networks with this authoritative guide to the state of the art. • Get up to speed with key topics such as cloud radio access networks, mobile edge computing, full duplexing, massive MIMO, mmWave, NOMA, Internet of things, M2M communications, D2D communications, mobile data offloading, interference mitigation techniques, radio resource management, visible light communications, and smart data pricing. • Learn from leading researchers in academia and industry about the most recent theoretical developments in the field. • Discover how each potential technology can increase the capacity, spectral efficiency, and energy efficiency of wireless systems. Providing the most comprehensive overview of 5G technologies to date, this is an essential reference for researchers, practicing engineers and graduate students working in wireless communications and networking.

無線通訊射頻晶片模組設計 ~ 射頻晶片篇2/e (2版)

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【中文書】 書名 : 無線通訊射頻晶片模組設計－射頻晶片篇(第二版) 作者 : 張盛富、張嘉展 出版社 : 全華 ISBN : 9789572197790 內容簡介 　　本書內容包含微波半導體元件與模型、射頻放大器、功率放大器與線性化技術、振盪器及混頻器。且特別注重文獻參考資料，以彰顯射頻知識的傳承。另外為增加思考廣度，列舉了不同的電路分析方法。本書適用於私立大學、科大電子系「射頻系統導論」之相關課程。 本書特色 　　1.針對無線通訊產品中之射頻晶片(含混成晶片、CMOS、PHEMT晶片)作詳盡之介紹。 　　2.列舉各種設計理論和分析方法，以增加思考廣度。 　　3.重視文獻回顧，以彰顯射頻知識的沿革。 　　4.提供模擬和實作例題，以便使讀者更加了解射頻晶片。 目錄 第7章　半導體元件與模型 7.1 半導體物理概述 2 7.2 二極體元件 17 7.3 雙極性電晶體(Bipolar Junction Transistor , BJT) 26 7.4 異質接面雙極性電晶體(Hetrojunction Bipolar Transistor, HBT) 32 7.5 接面場效電晶體(Junction Field Effect Transistor, JFET) 35 7.6 金氧半場效電晶體(Metal-Oxide-Semiconductor Field Effect Transistor , MOSFET) 37 7.7 金半場效電晶體(Metal- Semiconductor Field Effect Transistor , MESFET) 42 7.8 高速電子移動電晶體(High Electron Mobility Transistor , HEMT) 43 7.9 半導體參數測試及元件特性分析 47 7.10 微波元件特性及模型 49 第8章　射頻放大器 8.1 混成射頻放大器與單晶射頻放大器 66 8.2 輸出與輸入功率的比值-增益 69 8.3 訊號波流理論(Signal Flow Theory) 73 8.4 穩定度分析 83 8.5 消除不穩定的方法 91 8.6 直流偏壓電路 103 8.7 單向增益匹配 108 8.8 雙向增益匹配 111 8.9 功率匹配 115 8.10 雜訊匹配 119 8.11 設計實例 125 第9章　功率放大器與線性化技術 9.1 功率放大器特性之概述 148 9.2 功率放大器之類別 150 9.3 克里普斯(Cripps)負載線法 166 9.4 負載拉挽方法(Load-Pulling Method) 175 9.5 回饋線性化技術 177 9.6 前饋線性化(Feedforward Linearization)技術 184 9.7 前置失真技術(Pre-Distortion) 186 9.8 封包消弭與回復技術(Envelope Elimination and Restoration) 188 9.9 功率放大器設計實例 189 第10章　振盪器 10.1 簡介 200 10.2 形成振盪的必要條件-小訊號負電阻分析法 202 10.3 形成振盪的必要條件-小訊號迴授分析法 206 10.4 形成振盪的必要條件-小訊號S參數分析法 211 10.5 形成振盪的充份且必要條件-根軌跡法 215 10.6 形成振盪的充份且必要條件-阻抗軌跡法 219 10.7 穩定振盪功率-大訊號Y參數分析法 226 10.8 穩定振盪功率-大訊號S參數分析法 230 10.9 負載拉挽效應 233 10.10 注入鎖定效應 236 10.11 評估振盪器效能之各項參數 238 10.12 設計實例 241 第11章　混頻器 11.1 混頻器之發展與效能參數 260 11.2 單端二極體混頻器 264 11.3 單平衡二極體混頻器 275 11.4 雙平衡二極體混頻器 294 11.5 單閘極MESFET混頻器 302 11.6 雙閘極MESFET混頻器 306 11.7 平衡型MESFET混頻器 308 11.8 電阻型MESFET混頻器 312 11.9 單端MOSFET混頻器 316 11.10 平衡型MOSFET混頻器 318 11.11 電阻型MOSFET混頻器 330 11.12 平衡型BJT混頻器 332 11.13 次諧波驅動混頻器 333 11.14 鏡像拒斥降頻器 336 11.15 單邊帶升頻器 339 A　索引

Seeing Four-Dimensional Space and Beyond Using Knots!

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According to string theory, our universe exists in a 10- or 11-dimensional space. However, the idea the space beyond 3 dimensions seems hard to grasp for beginners. This book presents a way to understand four-dimensional space and beyond: with knots! Beginners can see high dimensional space although they have not seen it. With visual illustrations, we present the manipulation of figures in high dimensional space, examples of which are high dimensional knots and n-spheres embedded in the (n+2)-sphere, and generalize results on relations between local moves and knot invariants into high dimensional space. Local moves on knots, circles embedded in the 3-space, are very important to research in knot theory. It is well known that crossing changes are connected with the Alexander polynomial, the Jones polynomial, HOMFLYPT polynomial, Khovanov homology, Floer homology, Khovanov homotopy type, etc. We show several results on relations between local moves on high dimensional knots and their invariants. The following related topics are also introduced: projections of knots, knot products, slice knots and slice links, an open question: can the Jones polynomial be defined for links in all 3-manifolds? and Khovanov-Lipshitz-Sarkar stable homotopy type. Slice knots exist in the 3-space but are much related to the 4-dimensional space. The slice problem is connected with many exciting topics: Khovanov homology, Khovanv–Lipshits–Sarkar stable homotopy type, gauge theory, Floer homology, etc. Among them, the Khovanov–Lipshitz–Sarkar stable homotopy type is one of the exciting new areas; it is defined for links in the 3-sphere, but it is a high dimensional CW complex in general. Much of the book will be accessible to freshmen and sophomores with some basic knowledge of topology. Sample Chapter(s) Introduction Chapter 1: Local Moves on Knots: For Beginners Chapter 2: Four-Dimensional Space ℝ4 Contents: About the Author Acknowledgment Introduction Local Moves On Knots: For Beginners Four-Dimensional Space ℝ4 Local Moves in Higher-Dimensional Space: For Beginners Knotted-Objects in 4-Space and Beyond Local Moves on High-Dimensional Knots and Related Invariants The Alexander and Jones Polynomials of One-Dimensional Links in ℝ3 Local Moves and Knot Polynomials in Higher Dimensions Important Topics in Knot Theory References Index Readership: Freshmen and sophomores of science and people with similar mathematical background; general public interested in science, sci-fiction, and high-dimensional space; novice researchers in knot theory.