fundamentals of wireless communication technology ppt

... 290S: Fundamentals of Wireless CommunicationCourse Notes U.C Berkeley Fall 2002 Instructor: David Tse Co-written with: Pramod Viswanath September 18, 2002 Trang 2Chapter 3Point-to-Point Communication: ... ≈ 1000 (30 dB) Stupendous amounts of power would be required for more reliable communication Before we explore further the root cause of the poor performance of this detector, we note that there ... diversity is achieved by averaging over the fading of the channel over time Typically, the channel coherence time is of the order of 10’s to 100’s of symbols and therefore the channel is highly correlated

Ngày tải lên: 20/10/2013, 07:15

... Trang 1Fundamentals of Wireless Communication David Tse Trang 21 IntroductionTrang 3• The goal of this course is to study in a unified way the fundamentals as well as the ... The Wireless Channel 3 Diversity 4 Multiple Access and Interference Management 5 Capacity of Wireless Channels Trang 6Course Outline (2)Part II: Modern Wireless Communication 6 Opportunistic Communication ... interference of the transmitted waves • Channel varies when mobile moves a distance of the order of the carrier wavelength This is about 0.3 m for Trang 12impact how a wireless channel behaves from the communication

Ngày tải lên: 11/07/2014, 21:20

... Trang 1Fundamentals of Wireless Communication David TseDept of EECSU.C Berkeley Trang 2• The goal of this course is to study in a unified way the fundamentals as well as the ... speeds, this translates to channel variation of the order of 100 Hz • Primary driver behind wireless communication system design Trang 11Physical Models• Wireless channels can be modeled as linear ... Diversity-Multiplexing Tradeoff Trang 5Course Outline (3)Day 3: Wireless Networks 7 Multiple Access and Interference Management: A comparison of 3 systems 8 Opportunistic Communication and Multiuser

Ngày tải lên: 11/07/2014, 21:20

... in IoT implementations. 17 of a combination of technologies Below, are some of the major communication technologies on offer to developers.Short-range communication technology plays a crucial ... environment; It consists of wireless technology components for self- powered wireless control, signaling, and monitoring of systems It is on the 868.3 or 315 MHz frequency It uses wireless standards ... by 2020.Applications of IoTThe Internet of Things (IoT) offers vast potential for developing a wide range of applications, though only a few are currently in use Examples of IoT span smart homes,

Ngày tải lên: 10/12/2021, 19:32

... Trang 1Hanoi University of Science and Technology MASTER THESIS STUDY OF WIRELESS COMMUNICATION TECHNOLOGY FOR INTERNET OF THINGS APPLICATIONS SARA NIIACUONGUE LAICE ... choice of one or some form Trang 26of a combination of technologies Below, are some of the major communication lechnologies on offer to developors 1 Bluetooth Is an important short-range communications ... study of Smart Llome, a perspective specific to 1ol'-based systems, and the design and produstion of 3 prototype of a controlled lighting device connected to the Intemet, a proof of concept of

Ngày tải lên: 11/06/2025, 21:25

... president of the National Academy of Sciences. The National Academy of Engineering was established in 1964, under the charter of the National Academy of Sciences, as a parallel organization of outstanding ... development of models of several heights for men, women, and chil-dren of various ages for use in the characterization of SAR distributions for exposures characteristic of cell phones, wireless ... development of models of several heights for men, women, and children of various ages for use in the characterization of SAR distributions for exposures characteristic of cell phones, wireless PCs,

Ngày tải lên: 15/03/2014, 15:20

... application examples of using agent-based technology in this book, the collection of such application areas is far from completion The purpose of this book is to provide examples of recent advances ... Computer Engineering of Porto (INESC Porto) Faculty of Engineering, University of Porto Portugal 1 Introduction The twenty-first century has been called software century by some software engineeringresearchers ... relatedfields of expertise as power electronics, communication, information technology, and softwareengineering Additionally, the quoted drivers have been influencing power engineeringitself in terms of

Ngày tải lên: 26/06/2014, 23:20

... Title:The fundamentals og Graphic DesignProof a a a a 177-192 01077.qxd 8/1/08 4:40 PM Page 184 Job No:01077 Title:The fundamentals og Graphic Design Proof Measure The length of a line of text ... No:01077 Title:The fundamentals og Graphic DesignProof 177-192 01077_C2.qxd 9/5/08 1:18 PM Page 188 Job No:01077 Title:The fundamentals og Graphic Design Proof Surprint A method of reproduction ... warmth of a black can be altered Glossary > Index 181 Trang 3Job No:01077 Title:The fundamentals og Graphic DesignProof Grid (shown above) A graphic structure used to organise the placement of

Ngày tải lên: 01/07/2014, 10:43

... members of the SIG, signifying the industry’s unprecedented acceptance of the Bluetooth wireless technology The Bluetooth wireless technology specification provides secure, radiobased transmission of ... loss of Bluetooth in the wireless indoor channel Figure 4.2 Path loss of 802.11b in the wireless indoor channel Figure 4.3 Eb/No of a Bluetooth signal with the distance Figure 4.4 Eb/No of an ... placement of errors Figure 4.10 Collision placement of a 1-slot packet Figure 4.11 PER of a DH1 packet in the presence of multiple piconets Figure 4.12 PER of a DH3 packet in the presence of multiple

Ngày tải lên: 12/09/2015, 10:21

... Balloon Profiles in Ring Spinning 8.3.1 Balloon Profiles in the Absence of Air Drag 8.3.2 The Balloon Profile in the Presence of Air Drag 8.3.3 Determination of Ring Spinning Balloon Profiles Based ... Mary Trang 4Pref aceThe fundamentals of spun-yarn technology are concerned with the production ofyarns from fibers of discrete lengths and the structure-property relation of the spun yarns Ever ... engi-neering of textiles This book is aimed at giving the reader a good background on the subject of the conversion of fibers into yarns, and an in-depth understanding of the principles of the various

Ngày tải lên: 31/05/2016, 12:58

... calculated as the ratio of the count of the feed material to the spinning machine and the count of the yarn This value is then used to set the relative speeds of the drafting components of the machine ... factors are -= Trang 13therefore of importance: (1) the number of fibers in the triangle and the variation of this number, (2) the propagation of twist to the apex of the triangle, and (3) the mean ... aim of altering the geometry of the spinning triangle (see Figure 6.7) so as to improve the structure of the ring-spun yarn by more effective binding- in of surface fibers into the body of the

Ngày tải lên: 01/06/2016, 08:39

... restrict our focus tosmall office home office (SoHo), enterprise, and Wireless Internet Service Providers(WISP) scenarios Small Office Home Office (SoHo) Small office home office (SoHo) deployment ... started.[4]Figure 1.4: Enterprise wireless LAN setup 1.3.3 Wireless LAN Security Requirements Security of a LAN is often dictated by the physical properties of the medium ituses for communication, the methods ... use of encryption in wireless LANs for data security The encryption parameters that are important to consider when choosing awireless technology include the security strength of the encryption technology

Ngày tải lên: 29/01/2021, 00:58

... restrict our focus tosmall office home office (SoHo), enterprise, and Wireless Internet Service Providers(WISP) scenarios Small Office Home Office (SoHo) Small office home office (SoHo) deployment ... started.[4]Figure 1.4: Enterprise wireless LAN setup 1.3.3 Wireless LAN Security Requirements Security of a LAN is often dictated by the physical properties of the medium ituses for communication, the methods ... use of encryption in wireless LANs for data security The encryption parameters that are important to consider when choosing awireless technology include the security strength of the encryption technology

Ngày tải lên: 17/03/2021, 17:23

... calculated as the ratio of the count of the feed material to the spinning machine and the count of the yarn This value is then used to set the relative speeds of the drafting components of the machine ... automation, does not always offer the best process economics The key to its dominance of world markets is the suitability of the ring-spun yarn structure and properties to a wide range of fabric end uses ... the economics of the process, and — very importantly — the suitability of the resulting yarn structure to a wide range of end uses Except for the twistless-felting technique, all of the systems

Ngày tải lên: 01/04/2021, 12:43

... Mary Trang 4Pref aceThe fundamentals of spun-yarn technology are concerned with the production of yarns from fibers of discrete lengths and the structure-property relation of the spun yarns Ever ... engi-neering of textiles This book is aimed at giving the reader a good background on the subject of the conversion of fibers into yarns, and an in-depth understanding of the principles of the various ... able of ContentsChapter 1 Fundamentals of Yarns and Yarn Production 1.1 Early History and Developments 1.2 Yarn Classification and Structure 1.2.1 Classification of Yarns 1.2.2 The Importance of

Ngày tải lên: 01/04/2021, 14:53

... Trang 2Hillier’s Fundamentals of Motor Vehicle Technology Book 2 Powertrain Electronics Trang 4Hillier’s Fundamentals ofMotor Vehicle Technology Book 2 Powertrain Electronics ... application of electronics and computer control See Hillier’s Fundamentals of Motor Vehicle Technology Book 1 for explanations of the basic mechanical systems that still form a fundamental part of motor ... Hillier’s Fundamentals of Motor Vehicle Technology Book 3 provides an in-depth examination of the operation and construction of some sensors andactuators In other chapters details of specific

Ngày tải lên: 02/11/2023, 11:32

... a clear overview of the technology used, right from the first principles! The Fundamentals series now consists of three volumes Volume one is similar to the previous editions of FMVT but has ... most of the topics that students will need in the early part of their studies Volume two explores more advanced areas of technology employed in the modern vehicle powertrain, including all of the ... poles of a magnet are bridged by a piece of iron The unit of reluctance is the henry and is defined as the reluctance of a circuit where the rate of change of current is one ampere per second and

Ngày tải lên: 02/11/2023, 11:47

... now sketch an intuitive proof of the capacity formula (6.1) While the formula refers to a continuous-time channel, both the proof of the capacity formula, and the kinds of constructions we typically ... problem of signal design for reliable communication now boils down to packing disjoint decod- ing spheres of radius r n = √ nN within a sphere of radius R n , as shown in Figure 6.2 The volume of ... munication system, both in terms of setting design goals and in terms of gaining intuition on design parameters (e.g., size of constellation to use) The goal of this chapter, therefore, is to

Ngày tải lên: 31/01/2024, 20:26

... m) of boost, 18, 26, 127, 381 of buck, 18, 120, 381 of buck-boost, 18, 128, 381 of Cuk converter, 32, 381 of loss-free resistor networks, 376-381 in low-harmonic rectifiers, 593-595 modeling of, ... currents, table of, 609 of near-ideal rectifier waveforms, 604-609 Rotation of three-terminal cell, 141-142 Saturation of inductors, 462, 465-466 of magnetic materials, 458-460 of transformers, ... 458-460 of free space, m 0 , 458 relative, m r , 458 Phase asymptotes of complex poles, 279-282 inverted forms, 272 of real pole, 266-268 of real zero, 269 of RHP zero, 270 Phase control of resonant...

Ngày tải lên: 13/12/2013, 01:15

... • Types and uses of some common non-ferrous metals. • Types and uses of some non-metals. • Important mechanical properties of materials. 1.2.1 Introduction Choice of materials for a ... considered to be the ability of the material to absorb energy in the plastic zone. The measure of toughness is the amount of energy absorbed after being stressed upto the point of fracture. (i) Creep- ... loading, such as, fasteners, springs etc. 1.2.8 Summary of this Lesson In this lesson the properties and uses of different types of metals and non- metals, generally used in machine design,...

Ngày tải lên: 17/12/2013, 11:15