Mostrando 1,641 - 1,660 Resultados de 1,763 Para Buscar '"Cellular"', tiempo de consulta: 0.10s Limitar resultados
  1. 1641
    Publicado 2011
    Tabla de Contenidos: “…6.5.3 Coordinated Scheduling via Worst Companion Reporting 145 -- 6.6 Practical Implementation of CoMP in a Trial Environment 147 -- 6.6.1 Setup and Scenarios 149 -- 6.6.2 Measurement Results 149 -- 6.7 Future Directions 151 -- References 152 -- 7 Relaying for IMT-Advanced 157 -- 7.1 An Overview of Relaying 157 -- 7.1.1 Relay Evolution 158 -- 7.1.2 Relaying Deployment Scenarios 159 -- 7.1.3 Relaying Protocol Strategies 160 -- 7.1.4 Half Duplex and Full Duplex Relaying 162 -- 7.1.5 Numerical Example 162 -- 7.2 Relaying in the Standard Bodies 164 -- 7.2.1 Relay Types in LTE-Advanced Rel-10 164 -- 7.2.2 Relay Nodes in IEEE 802.16m 166 -- 7.3 Comparison of Relaying and CoMP 166 -- 7.3.1 Protocols and Resource Management 167 -- 7.3.2 Simulation Results 169 -- 7.4 In-band RNs versus Femtocells 171 -- 7.5 Cooperative Relaying for Beyond IMT-Advanced 173 -- 7.6 Relaying for beyond IMT-Advanced 176 -- 7.6.1 Multihop RNs 176 -- 7.6.2 Mobile Relay 177 -- 7.6.3 Network Coding 177 -- References 177 -- 8 Network Coding in Wireless Communications 181 -- 8.1 An Overview of Network Coding 181 -- 8.1.1 Historical Background 182 -- 8.1.2 Types of Network Coding 183 -- 8.1.3 Applications of Network Coding 183 -- 8.2 Uplink Network Coding 188 -- 8.2.1 Detection Strategies 188 -- 8.2.2 User Grouping 190 -- 8.2.3 Relay Selection 191 -- 8.2.4 Performance 192 -- 8.2.5 Integration in IMT-Advanced and Beyond 194 -- 8.3 Nonbinary Network Coding 194 -- 8.3.1 Nonbinary NC based on UE Cooperation 195 -- 8.3.2 Nonbinary NC for Multiuser and Multirelay 196 -- 8.3.3 Performance 197 -- 8.3.4 Integration in IMT-Advanced and Beyond 198 -- 8.4 Network Coding for Broadcast and Multicast 199 -- 8.4.1 Efficient Broadcast Network Coding Scheme 200 -- 8.4.2 Performance 201 -- 8.5 Conclusions and Future Directions 202 -- References 203 -- 9 Device-to-Device Communication 207 -- 9.1 Introduction 207 -- 9.2 State of the Art 208 -- 9.2.1 In Standards 208 -- 9.2.2 In Literature 210 -- 9.3 Device-to-Device Communication as Underlay to Cellular Networks 211.…”
    Libro electrónico
  2. 1642
    por Das, LyLa B.
    Publicado 2012
    Tabla de Contenidos: “…1.8 History of Embedded Systems -- 1.9 Current Trends -- Conclusion -- Key Points of this Chapter -- Questions -- Exercises -- Chapter 2: Embedded Systems-The Hardware Point of View -- Introduction -- 2.1 Microcontroller Unit (MCU) -- 2.1.1 The Processor -- 2.1.2 The Harvard Architecture -- 2.2 A Popular 8-bit MCU -- 2.2.1 General Purpose I/O (GPIO) -- 2.2.2 Clock -- 2.2.3 Power on Reset -- 2.2.4 Brown Out Reset -- 2.2.5 Timers and Counters -- 2.2.6 Watchdog Timer -- 2.2.7 Real-time Clock (RTC) -- 2.2.8 Stack -- 2.2.9 Interrupts -- 2.2.10 DMA -- 2.2.11 Communication Ports -- 2.3 Memory for Embedded Systems -- 2.3.1 Semiconductor Memory -- 2.3.2 Random Access Memory (RAM) -- 2.3.3 Dynamic RAM (DRAM) -- 2.3.4 ROM (Read Only Memory) -- 2.3.5 Caches -- 2.4 Low Power Design -- 2.5 Pullup and Pulldown Resistors -- 2.5.1 Floating State of an Input -- 2.5.2 Pulldown and Pullup Resistances -- 2.5.3 Open Collector/Open Drain Gates -- 2.5.4 Weak and Strong Pullup -- 2.5.5 High Impedance State, Hi-Z -- Conclusion -- Key Points of this Chapter -- Questions -- Exercises -- Chapter 3: Sensors, ADCs and Actuators -- Introduction -- 3.1 Sensors -- 3.1.1 Temperature Sensors -- 3.1.2 Light Sensors -- 3.1.3 Proximity/Range Sensors -- 3.1.4 Encoders -- 3.1.5 Humidity Sensors -- 3.1.6 Other Sensors -- 3.2 Analog to Digital Converters -- 3.2.1 ADC Interfacing * -- 3.3 Actuators -- 3.3.1 Displays -- 3.3.2 Motors -- 3.3.3 Optocouplers/Opto Isolators -- 3.3.4 Relays -- Conclusion -- Key Points of this Chapter -- Questions -- Exercises -- Chapter 4: Examples of Embedded Systems -- Introduction -- 4.1 Mobile Phone -- 4.1.1 Block Diagram -- 4.1.2 The Cellular Concept -- 4.1.3 Multiple Access -- 4.1.4 Frequency Re-use -- 4.1.5 Handoff (Handover) -- 4.1.6 Spread Spectrum Techniques -- 4.1.7 Set Up and Maintanence -- 4.1.8 Conclusion -- 4.2 Automotive Electronics…”
    Libro electrónico
  3. 1643
    Publicado 2010
    Seriada digital
  4. 1644
    Publicado 2016
    “…The issue will include original articles, reviews, and perspectives, that address nicotinic-, and muscarinic- receptor signaling at a cellular and systems level. This includes cellular electrophysiology, signal transduction, and circuit level analyses. …”
    Libro electrónico
  5. 1645
    Publicado 2019
    Tabla de Contenidos: “…5.7.7 Smelly GOB -- 5.8 Rule-Based Systems -- 5.8.1 The Problem -- 5.8.2 The Algorithm -- 5.8.3 Pseudo-Code -- 5.8.4 Data Structures and Interfaces -- 5.8.5 Rule Arbitration -- 5.8.6 Unification -- 5.8.7 Rete -- 5.8.8 Extensions -- 5.8.9 Where Next -- 5.9 Blackboard Architectures -- 5.9.1 The Problem -- 5.9.2 The Algorithm -- 5.9.3 Pseudo-Code -- 5.9.4 Data Structures and Interfaces -- 5.9.5 Performance -- 5.9.6 Other Things Are Blackboard Systems -- 5.10 Action Execution -- 5.10.1 Types of Action -- 5.10.2 The Algorithm -- 5.10.3 Pseudo-Code -- 5.10.4 Data Structures and Interfaces -- 5.10.5 Implementation Notes -- 5.10.6 Performance -- 5.10.7 Putting It All Together -- CHAPTER 6: TACTICAL AND STRATEGIC AI -- 6.1 Waypoint Tactics -- 6.1.1 Tactical Locations -- 6.1.2 Using Tactical Locations -- 6.1.3 Generating the Tactical Properties of a Waypoint -- 6.1.4 Automatically Generating the Waypoints -- 6.1.5 The Condensation Algorithm -- 6.2 Tactical Analyses -- 6.2.1 Representing the Game Level -- 6.2.2 Simple Influence Maps -- 6.2.3 Terrain Analysis -- 6.2.4 Learning with Tactical Analyses -- 6.2.5 A Structure for Tactical Analyses -- 6.2.6 Map Flooding -- 6.2.7 Convolution Filters -- 6.2.8 Cellular Automata -- 6.3 Tactical Pathfinding -- 6.3.1 The Cost Function -- 6.3.2 Tactic Weights and Concern Blending -- 6.3.3 Modifying the Pathfinding Heuristic -- 6.3.4 Tactical Graphs for Pathfinding -- 6.3.5 Using Tactical Waypoints -- 6.4 Coordinated Action -- 6.4.1 Multi-Tier AI -- 6.4.2 Emergent Cooperation -- 6.4.3 Scripting Group Actions -- 6.4.4 Military Tactics -- CHAPTER 7: LEARNING -- 7.1 Learning Basics -- 7.1.1 Online or Offline Learning -- 7.1.2 Intra-Behavior Learning -- 7.1.3 Inter-Behavior Learning -- 7.1.4 A Warning -- 7.1.5 Over-Learning -- 7.1.6 The Zoo of Learning Algorithms -- 7.1.7 The Balance of Effort -- 7.2 Parameter Modification…”
    Libro electrónico
  6. 1646
    Publicado 2016
    “…Here, we gather the latest information regarding new targets and cellular processes, including an update on current cellular therapies and the exciting coming approaches to cure autoimmunity and permit transplant acceptance…”
    Libro electrónico
  7. 1647
    Publicado 2014
    “…The study aims to normalize, standardize, and implement flow cytometry-based cellular immunity assay in routine clinical tests. …”
    Libro electrónico
  8. 1648
    Publicado 2015
    Seriada digital
  9. 1649
    Publicado 2016
    Tabla de Contenidos: “…14.5.1 Signalling Flows 322 -- 14.5.2 Performance 326 -- 14.6 Summary 331 -- References 331 -- 15 Inter-layer Mobility Optimization 333 /Jari Salo and Jussi Reunanen -- 15.1 Introduction 333 -- 15.2 Inter-layer Idle Mode Mobility and Measurements 334 -- 15.2.1 Initial Cell Selection and Minimum Criteria for UE to Camp on a Cell 334 -- 15.2.2 Summary of Cell Reselection Rules 336 -- 15.2.3 Idle Mode Measurements 338 -- 15.3 Inter-layer Connected Mode Measurements 344 -- 15.4 Inter-layer Mobility for Coverage-Limited Network 350 -- 15.4.1 Basic Concepts 350 -- 15.4.2 Mapping Throughput Target to SINR, RSRQ and RSRP 353 -- 15.4.3 Inter-layer Mobility Example #1 (Non-equal Priority Non-equal Bandwidth LTE Layers) 361 -- 15.4.4 Inter-layer Mobility Example #2 (Equal Priority Equal Bandwidth LTE Layers) 368 -- 15.5 Inter-layer Mobility for Capacity-Limited Networks 370 -- 15.5.1 Static Load Balancing via Mobility Thresholds 371 -- 15.5.2 Dynamic Load Balancing via eNodeB Algorithms 375 -- 15.6 Summary 377 -- References 377 -- 16 Smartphone Optimization 379 /Rafael Sanchez-Mejias, Laurent NoŠ el and Harri Holma -- 16.1 Introduction 379 -- 16.2 Smartphone Traffic Analysis in LTE Networks 380 -- 16.2.1 Data Volumes and Asymmetry 380 -- 16.2.2 Traffic-Related Signalling 381 -- 16.2.3 Mobility-Related Signalling 382 -- 16.2.4 User Connectivity 382 -- 16.3 Smartphone Power Consumption Optimization 384 -- 16.3.1 Impact of Downlink Carrier Aggregation 384 -- 16.3.2 Impact of Discontinuous Reception 385 -- 16.4 Smartphone Operating Systems 391 -- 16.5 Messaging Applications 391 -- 16.6 Streaming Applications 393 -- 16.7 Voice over LTE 394 -- 16.7.1 VoLTE System Architecture 395 -- 16.7.2 VoLTE Performance Analysis 396 -- 16.7.3 Standby Performance 404 -- 16.7.4 Impact of Network Loading and Radio Quality 405 -- 16.8 Smartphone Battery, Baseband and RF Design Aspects 406 -- 16.8.1 Trends in Battery Capacity 406 -- 16.8.2 Trends in Cellular Chipset Power Consumption 409 -- 16.8.3 Impact of Small Cells on Smartphone Power Consumption 412.…”
    Libro electrónico
  10. 1650
    Publicado 2018
    “…This research topic focuses on the cellular signaling mechanisms that are essential for host immunity and their subversion by pathogens…”
    Libro electrónico
  11. 1651
    por García Díaz, María
    Publicado 2012
    “…Finalment, han estat explorats nous models cel·lulars in vitro per a l'optimització dels processos amb oxigen singlet. …”
    Accés lliure a text complet
    Tesis
  12. 1652
    Publicado 2017
    Tabla de Contenidos: “…2.2.2 The Role of Networks 47 -- 2.2.3 The Role of Apps 50 -- 2.2.4 UE Application Development 52 -- 2.2.5 Developers 55 -- 2.2.6 The Role of the SIM/UICC 56 -- 2.2.7 Challenges of Legislation 57 -- 2.2.8 Updating Standards 58 -- 2.2.9 3GPP System Evolution 58 -- 2.3 GSM 59 -- 2.3.1 The SIM 60 -- 2.3.2 Authentication and Authorization 62 -- 2.3.3 Encryption of the Radio Interface 63 -- 2.3.4 Encryption of IMSI 65 -- 2.3.5 Other GSM Security Aspects 65 -- 2.4 UMTS/HSPA 66 -- 2.4.1 Principles of 3G Security 66 -- 2.4.2 Key Utilization 68 -- 2.4.3 3G Security Procedures 69 -- 2.5 Long Term Evolution 71 -- 2.5.1 Protection and Security Principles 71 -- 2.5.2 X.509 Certificates and Public Key Infrastructure (PKI) 71 -- 2.5.3 IPsec and Internet Key Exchange (IKE) for LTE Transport Security 72 -- 2.5.4 Traffic Filtering 73 -- 2.5.5 LTE Radio Interface Security 74 -- 2.5.6 Authentication and Authorization 78 -- 2.5.7 LTE/SAE Service Security / Case Examples 79 -- 2.5.8 Multimedia Broadcast and Multicast Service (MBMS) and enhanced MBMS (eMBMS) 83 -- 2.6 Security Aspects of Other Networks 91 -- 2.6.1 CDMA (IS‐95) 91 -- 2.6.2 CDMA2000 93 -- 2.6.3 Broadcast Systems 94 -- 2.6.4 Satellite Systems 94 -- 2.6.5 Terrestrial Trunked Radio (TETRA) 95 -- 2.6.6 Wireless Local Area Network (WLAN) 96 -- 2.7 Interoperability 102 -- 2.7.1 Simultaneous Support for LTE/SAE and 2G/3G 102 -- 2.7.2 VoLTE 105 -- 2.7.3 CS Fallback 105 -- 2.7.4 Inter‐operator Security Aspects 106 -- 2.7.5 Wi‐Fi Networks and Offload 106 -- 2.7.6 Femtocell Architecture 108 -- References 109 -- 3 Internet of Things 112 -- 3.1 Overview 112 -- 3.2 Foundation 113 -- 3.2.1 Definitions 113 -- 3.2.2 Security Considerations of IoT 115 -- 3.2.3 The Role of IoT 115 -- 3.2.4 IoT Environment 117 -- 3.2.5 IoT Market 120 -- 3.2.6 Connectivity 121 -- 3.2.7 Regulation 122 -- 3.2.8 Security Risks 123 -- 3.2.9 Cloud 128 -- 3.2.10 Cellular Connectivity 129 -- 3.2.11 WLAN 133 -- 3.2.12 Low‐Range Systems 133 -- 3.3 Development of IoT 140.…”
    Libro electrónico
  13. 1653
    Publicado 2015
    “…The study of how pathogenetical mechanisms are related to the critical/non-critical behavior of neuronal networks would likely provide new insights into the cellular and synaptic determinants of the emergence of critical-like dynamics and structures in neural systems. …”
    Libro electrónico
  14. 1654
    Publicado 2016
    “…Moreover, several research groups are using high-throughput and data-driven technologies, including “omics” approaches to investigate microalgae cellular responses at a system-wide level, revealing new features of microalgae biology, highlighting differences between microalgae and land plants. …”
    Libro electrónico
  15. 1655
    Publicado 2005
    “…With the majority of information and new services being deployed over IP, the use of devices such as cellular phones, PDAs, and laptops for accessing data networks is pushing the need for “always on” IP connectivity. …”
    Libro electrónico
  16. 1656
    Publicado 2019
    “…Describes construction and application of computational human models including anatomically detailed and subject specific models; Explains new practices in computational human modeling for neuroelectromagnetics, electromagnetic safety, and exposure evaluations; Includes a survey of modern applications for which computational human models are critical; Describes cellular-level interactions between the human body and electromagnetic fields…”
    Libro electrónico
  17. 1657
    Publicado 2015
    “…By comparing and contrasting antimicrobial peptides and complement, greater cross-disciplinary appreciation will be derived for their individual and overlapping spectra of activity, circumstances of activation and their general ability to more completely inform the inflammatory and cellular response…”
    Libro electrónico
  18. 1658
    por Cox, Christopher 1965-
    Publicado 2014
    Tabla de Contenidos: “…2.7.3 Bearer Implementation Using GTP 38 -- 2.7.4 Bearer Implementation Using GRE and PMIP 39 -- 2.7.5 Signalling Radio Bearers 39 -- 2.8 State Diagrams 40 -- 2.8.1 EPS Mobility Management 40 -- 2.8.2 EPS Connection Management 40 -- 2.8.3 Radio Resource Control 41 -- 2.9 Spectrum Allocation 43 -- References 45 -- 3 Digital Wireless Communications 49 -- 3.1 Radio Transmission and Reception 49 -- 3.1.1 Carrier Signal 49 -- 3.1.2 Modulation Techniques 50 -- 3.1.3 The Modulation Process 51 -- 3.1.4 The Demodulation Process 53 -- 3.1.5 Channel Estimation 55 -- 3.1.6 Bandwidth of the Modulated Signal 55 -- 3.2 Radio Transmission in a Mobile Cellular Network 56 -- 3.2.1 Multiple Access Techniques 56 -- 3.2.2 FDD and TDD Modes 56 -- 3.3 Impairments to the Received Signal 58 -- 3.3.1 Propagation Loss 58 -- 3.3.2 Noise and Interference 58 -- 3.3.3 Multipath and Fading 58 -- 3.3.4 Inter-symbol Interference 60 -- 3.4 Error Management 61 -- 3.4.1 Forward Error Correction 61 -- 3.4.2 Automatic Repeat Request 62 -- 3.4.3 Hybrid ARQ 63 -- References 65 -- 4 Orthogonal Frequency Division Multiple Access 67 -- 4.1 Principles of OFDMA 67 -- 4.1.1 Sub-carriers 67 -- 4.1.2 The OFDM Transmitter 68 -- 4.1.3 The OFDM Receiver 70 -- 4.1.4 The Fast Fourier Transform 72 -- 4.1.5 Block Diagram of OFDMA 72 -- 4.1.6 Details of the Fourier Transform 73 -- 4.2 Benefits and Additional Features of OFDMA 75 -- 4.2.1 Orthogonal Sub-carriers 75 -- 4.2.2 Choice of Sub-carrier Spacing 75 -- 4.2.3 Frequency-Specific Scheduling 77 -- 4.2.4 Reduction of Inter-symbol Interference 78 -- 4.2.5 Cyclic Prefix Insertion 79 -- 4.2.6 Choice of Symbol Duration 80 -- 4.2.7 Fractional Frequency Re-use 81 -- 4.3 Single Carrier Frequency Division Multiple Access 82 -- 4.3.1 Power Variations From OFDMA 82 -- 4.3.2 Block Diagram of SC-FDMA 83 -- References 85 -- 5 Multiple Antenna Techniques 87 -- 5.1 Diversity Processing 87 -- 5.1.1 Receive Diversity 87 -- 5.1.2 Closed Loop Transmit Diversity 88 -- 5.1.3 Open Loop Transmit Diversity 89.…”
    Libro electrónico
  19. 1659
    Publicado 2015
    “…Other animal viruses associated to cancer often deregulate cellular epigenetic mechanisms, silencing cellular tumor-suppressor genes and/or activating either viral or host cell oncogenes. …”
    Libro electrónico
  20. 1660
    Publicado 2016
    “…We provide comprehensive insights of distinct neural networks and how cellular and molecular events in the brain regulate social behavior from a comparative perspective…”
    Libro electrónico