Wireless Communication-the fundamental and advanced concepts ( River Publishers Series in Communications )

Publication series :River Publishers Series in Communications

Author: Kumar> Sanjay  

Publisher: River Publishers‎

Publication year: 2015

E-ISBN: 9788793102811

P-ISBN(Paperback): 9788793102804

Subject: TN92 无线通信

Keyword: 无线电电子学、电信技术

Language: ENG

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Chapter

EXERCISES

References

5. Wireless Communication Systems and Standards-4:WMAN

5.1 Introduction

5.2 IEEE 802.16

5.2.1 IEEE 802.16 PHY

5.2.2 IEEE 802.16 MAC

5.3 IEEE 802.16a (WiMAX)

5.3.1 WiMAX PHY

5.3.2 WiMAX MAC

5.3.3 WiMAX Architecture

5.4 IEEE 802.16d

5.5 Mobile WiMAX (IEEE 802.16e and IEEE 802.16m)

5.5.1 Mobile WiMAX PHY

5.5.2 Mobile WiMAX MAC

5.6 WiMAX and Wi-Fi

5.7 WiMAX Forum

EXERCISES

References

6. Wireless Signal Propagation and Fading

6.1 Wireless Signal Propagation

6.2 Modes of Propagation

6.3 Wireless Mobile Environment

6.3.1 Signal Propagation in Wireless Mobile Environment

6.3.2 Multipath Propagation

6.3.2.1 Time variant representation of a wireless channel

6.3.2.2 Multipath components

6.3.2.3 Impact of multipath propagation

6.4 Wireless Channel Models

6.4.1 Types of Wireless Channel Models

6.4.2 Free Space Propagation Model

6.4.3 Outdoor Propagation Models

6.4.4 Indoor Propagation Model

6.4.5 Log Normal Shadowing

6.5 Fading in Wireless Mobile Environment

6.5.1 Large Scale Fading

6.5.2 Small Scale Fading

6.5.2.1 Kinds of small scale fading

6.6 Some Typical Small Scale Fading Model

6.6.1 Rician Fading Model

6.6.2 Rayleigh Fading Model

6.6.3 Nakagami Fading Model

6.7 Channel Parameters

6.7.1 Delay Spread

6.7.1.1 Delay parameters

6.7.1.2 Physical implication of time dispersion

6.7.1.3 Inter symbol interference (ISI)

6.7.2 Doppler Spread

6.7.3 Coherence Bandwidth

6.7.4 Coherence Time

6.7.5 Level Crossing Rate (LCR)

6.7.6 Average Duration of Fade (ADF)

6.7.7 Cumulative Probability Density (CPD)

6.8 Classification of Wireless Mobile Channels

6.8.1 Dispersive Channels

6.8.1.1 Time dispersive channel

6.8.1.2 Frequency dispersive channel

6.8.1.3 Doubly dispersive channel

6.8.2 Non Dispersive But Fading Channel

6.9 Basic Propagation Mechanisms

6.9.1 Reflection

6.9.1.1 Two ray ground reflection model

6.9.2 Diffraction

6.9.2.1 Huygens’s principle

6.9.2.2 Fresnel zones

6.9.2.3 Knife-edge diffraction model

6.9.2.4 Diffraction losses

6.9.3 Scattering

EXERCISES

References

7. Channel Impairments Removal Techniques

7.1 Introduction

7.2 Diversity Mechanism and Combining Techniques

7.2.1 Concept of Diversity

7.2.2 Types of Diversity Schemes

7.2.3 Array Gain vs. Diversity Gain

7.3 Combining Techniques

7.3.1 Selection Combining (SC)

7.3.2 Threshold Combining (TC)

7.3.3 Maximum Ratio Combining (MRC)

7.3.4 Equal Gain Combining (EGC)

7.4 Concept of Equalization

7.4.1 Operation of an Equalizer

7.4.2 Adaptive Equalization

7.4.3 Types of Equalizers

7.4.4 Concept of RAKE Receiver

7.4.4.1 RAKE receiver in CDMA

7.4.4.2 How does a RAKE receiver work?

7.5 Coding for Wireless Channels

7.5.1 Code Design for Fading Channels

7.5.1.1 Interleaving

7.5.1.2 Block interleaver

7.5.2 Basic Code Design Parameters

7.5.3 Error Control Coding

7.5.4 Types of Channel Coding

7.5.4.1 Block code

7.5.4.2 Convolutional codes

7.5.5 Statistical Concept of Decoding

7.5.5.1 Maximum likelihood decoding

7.5.5.2 Viterbi decoding

7.5.6 Turbo Codes

7.5.7 Low Density Parity Check (LDPC) Code

7.5.8 Trellis Coded Modulation (TCM)

7.5.9 Hierarchical Coding

7.5.10 Encoding and Decoding Processes in Wireless Communication

EXERCISES

References

8. Multiple Access Techniques

8.1 Introduction

8.2 Duplexing Schemes

8.2.1 FDD vs. TDD

8.2.2 DL and UL Communications

8.3 Kinds of Multiple Access Techniques

8.3.1 Contention Free Multiple Access

8.3.1.1 FDMA

8.3.1.2 TDMA

8.3.1.3 Spread spectrum technique

8.3.1.4 Space division multiple access (SDMA)

8.3.1.5 Hybrid MA techniques

8.3.2 Multi-Carrier Multiple Access (MCMA)

8.3.3 Contention Based Multiple Access Schemes

8.3.3.1 ALOHA protocols

8.3.3.2 Carrier sense multiple access (CSMA)

EXERCISES

References

9. Modulation for Wireless Communication

9.1 Introduction

9.2 What is Modulation?

9.3 Why Modulation is Important?

9.4 Types of Modulation Schemes

9.5 Description of Various Modulation Schemes

9.5.1 Analog Modulation

9.5.1.1 Amplitude modulation (AM)

9.5.1.2 Angle modulation

9.5.1.3 Frequency modulation vs. amplitude modulation

9.5.2 Digital Modulation

9.5.2.1 Amplitude shift keying (ASK)

9.5.2.2 Phase shift keying (PSK)

9.5.2.3 Gaussian-filtered MSK (GMSK)

9.5.2.4 Hybrid modulation

9.6 Comparison of Digital Modulation Schemes for Wireless Communication

9.7 Pulse Shaping

9.7.1 Nyquist Criteria for Pulse Shaping

9.7.2 Gaussian Pulse Shaping Filter

9.8 Vector Representation of Signals

9.8.1 Representation of a Transmitted Signal

9.8.2 Orthogonal Functions

9.8.3 Basis Functions

9.8.4 Representation of Signals as Vectors and Functions

9.8.5 Some Inherent Correspondence between Vectors and Functions

9.8.6 Representation of a Signal in Vector Space

9.8.7 Constellation Diagram

9.8.7.1 Example constellation diagrams

9.9 Detection of Signals

9.9.1 Distinguishability of Signals

EXERCISES

References

10. Wireless System Capacity

10.1 Introduction

10.2 Wireless System Capacity under Different Channel Conditions

10.2.1 AWGN Channel Capacity

10.2.2 Flat Fading Channel Capacity

10.2.2.1 Capacity in flat fading channel when only CDI is available

10.2.2.2 Capacity in flat fading channel when CSIR is available

10.2.2.3 Capacity in flat fading channel when CSIT is available

10.2.3 Capacity of Frequency Selective Fading Channels

10.2.3.1 Capacity in time invariant frequency selective fading channels

10.2.3.2 Capacity in time variant frequency selective fading channels

10.3 Comments on Wireless System Capacity

EXERCISES

References

11. Wireless Adhoc Networks

11.1 Introduction

11.2 Why Adhoc Networks?

11.3 Symmetric and Asymmetric Links

11.4 Multi-Hop Transmissions

11.5 Protocol Layers in Wireless Adhoc Networks

11.5.1 Wireless Adhoc Networks with Reference to TCP/IP Model

11.6 Cross Layer Design

11.7 Examples of Wireless Adhoc Networks

11.7.1 Mobile Adhoc Networks (MANET)

11.7.2 Wireless Sensor Network (WSN)

11.7.2.1 General consideration for a sensor node

11.7.2.2 Routing in WSN

11.8 Energy Constraints in Wireless Adhoc Networks

11.9 Design Challenges in Wireless Adhoc Networks

EXERCISES

References

12. Security in Wireless Communication

12.1 Introduction

12.2 Security Goals

12.3 Security Threats and Attacks

12.4 Providing Security

12.4.1 Authentication Process

12.4.2 Encryption Technique

12.5 Security in WLAN

12.5.1 Authentication in WLAN

12.5.2 Confidentiality in WLAN

12.6 Security in GSM

12.6.1 Authentication in GSM

12.6.2 Encryption in GSM

12.7 Security Requirements in MANET

EXERCISES

References

PART II

13. The Cellular Fundamentals

13.1 Introduction

13.2 Conventional Mobile Communication

13.3 Mobile Cellular Communication

13.4 Cellular Concept and Frequency Reuse

13.4.1 Universal and Fractional Frequency Reuse

13.5 Cellular System Design Unit

13.6 General Architecture of a Cellular System

13.7 Frequency Channels in a Cellular System

13.7.1 Channelization Scheme in AMPS

13.8 Establishing a Call in a Cellular System

13.8.1 Establishing a Call Originated by a Telephone Subscriber to a Mobile User

13.8.2 Establishing a Call Originated by a Mobile User to a Telephone Subscriber

13.9 Frequency Management and Channel Assignment

13.10 Channel Assignment Strategies

13.10.1 Fixed Channel Assignment

13.10.2 Dynamic Channel Assignment

13.10.3 Hybrid Channel Assignment

13.11 Hand-off in a Cellular System

13.11.1 Power Level Consideration for Hand-off

13.11.2 The Dwell Time and Umbrella Approach

13.11.3 Types of Hand-offs

13.11.4 Prioritization of Hand-off

EXERCISES

References

14. Interference and Cellular System Capacity

14.1 What is Interference?

14.1.1 Downlink and Uplink Interferences

14.2 Types of Interference

14.2.1 Co-channel Interference

14.2.1.1 Relation between Q and N

14.2.1.2 Locating co-channel cells in a cellular system

14.2.1.3 Estimation of SIR in co-channel cells

14.2.2 Adjacent Channel Interference (ACI)

14.2.2.1 Signal power reduction due to frequency separation

14.2.3 Interference due to Near-end to Far-end Effect (NFE)

14.2.3.1 Power control

14.3 Enhancing Capacity of Cellular Systems

14.3.1 Cell Splitting

14.3.2 Sectorization

14.3.2.1 Higher order sectorization

14.3.3 Smart Antenna Technique

14.3.4 Link Adaptation

14.3.4.1 Adaptive modulation and coding

14.3.4.2 Fairness consideration

14.3.4.3 Resource allocation algorithms

14.3.5 Small Cell Deployment

EXERCISES

References

15. Cellular Systems and Standards

15.1 Introduction

15.2 First Generation (1G) Systems

15.3 Second Generation (2G) System

15.4 Beyond Second Generation (2.5 G Systems)

15.5 Third Generation (3G) Systems

15.5.1 Code Division Multiple Access (CDMA)

15.6 Cellular Systems Beyond 3G

15.7 Fourth Generation (4G)

15.8 Brief Summary of Developments within Cellular System

EXERCISES

References

16. Typical Examples from Cellular Standards

16.1 Introduction

16.2 AMPS (Advanced Mobile Phone System)

16.2.1 AMPS Channels

16.2.2 AMPS Operation

16.3 GSM (Global System for Mobile communication)

16.3.1 GSM Services

16.3.2 GSM Architecture

16.3.3 GSM Interfaces

16.3.4 GSM Channels

16.3.4.1 Frame structure in GSM

16.3.5 Identification Numbers in GSM

16.3.6 GSM Protocols

16.3.6.1 Physical layer

16.3.6.2 Data link layer

16.3.6.3 Network layer

16.3.7 Hand-off in GSM

16.3.8 GSM Security (see Section 12.6)

16.4 GPRS (General Packet Radio Services)

16.4.1 GPRS Architecture

16.4.2 GPRS Protocols

16.4.3 GPRS Channels

16.5 WCDMA (Wideband Code Division Multiple Access)

16.5.1 UMTS Architecture

16.5.2 WCDMA Architecture

16.5.3 Features of WCDMA

16.6 LTE (Long Term Evolution)

16.6.1 LTE Architecture

16.6.2 LTE Operation

EXERCISES

References

PART III

17. Multicarrier Modulation and OFDM

17.1 Multicarrier Modulation

17.2 Block Diagram of Multicarrier Modulation

17.3 OFDM (Orthogonal Frequency Division Multiplexing)

17.3.1 OFDM Concept

17.3.2 The Concept of Orthogonality

17.3.3 OFDM Advantages

17.3.4 OFDM Block Diagram

17.3.5 Cyclic Prefix

17.3.6 Shortcomings in OFDMTechnique

17.3.6.1 High PAPR

17.3.6.2 Frequency and Timing offset

17.3.7 Synchronization in OFDM

17.3.7.1 Synchronization Methods

17.3.8 OFDM System Design Parameters

17.3.8.1 Example OFDM specifications

17.3.9 OFDMA (Orthogonal Frequency Division Multiple Access)

EXERCISES

References

18. Multiple Input Multiple Output (MIMO) Systems

18.1 Introduction

18.2 Different Antenna Configurations

18.3 Why MIMO?

18.4 MIMO-OFDM System

18.5 MIMO Applications

18.6 Brief History of MIMO

18.7 Kinds of MIMO

18.8 MIMO Configuration and MIMO Channel Model

18.9 MIMO, Smart Antenna and Beamforming

18.10 Space Time Coding (STC) in MIMO

18.10.1 STC and Pre-Coding

18.10.2 Spatial Multiplexing and Spatial Diversity

18.10.3 STTC and STBC

18.10.4 Higher Order STBC Schemes/Generalized Complex Orthogonal STBC

18.10.5 STBC Concatenated withTrellis Coded Modulation (TCM)

18.11 Alamouti Scheme

18.11.1 Properties of Alamouti Scheme

18.12 Sub-optimal Schemes (the BLAST Architectures)

18.13 MIMO in a Communication System

18.13.1 Choice of MIMO System Design Parameters

18.14 MIMO System Capacity

18.14.1 SIMO, MISO and MIMO Channels

18.14.2 SVD of MIMO Channel

18.14.3 Comments on MIMO System Capacity

EXERCISES

References

19. Next Generation Cellular Systems

19.1 4G Cellular Communication System

19.1.1 IMT-A

19.1.2 LTE-A

19.1.3 LTE-A vs. WiMAX

19.2 4G Technologies

19.2.1 Support of Higher and Scalable System Bandwidth

19.2.2 Flexible Spectrum Usage (FSU)

19.2.3 Autonomous Network Configuration and Operation

19.2.4 Decentralized Nomadic/Local Area Solution

19.3 Smart Antenna

19.3.1 Antenna Gain

19.3.2 Antenna Array

19.3.3 Capacity and Coverage

19.3.4 Types of Smart Antennas

19.4 Cognitive Radio (CR)

19.4.1 Components of Cognitive Radio Network

19.4.2 The Cognitive Radio Cycle

19.4.3 Challenges in Cognitive Radio Implementation

19.4.4 Key Research Issues in Cognitive Radio Systems

19.4.5 Cooperation and Cognitive Radio

19.5 SDR (Software Defined Radio)

19.5.1 Characteristics Features of Software Defined Radio

19.5.2 Software Defined Radio Design

19.6 Communication Relays

19.6.1 Types of Relay Stations

19.6.2 Relay Transmissions

19.7 Spectrum Allocation Options

19.7.1 Fixed Spectrum Allocation

19.7.2 Flexible Spectrum Allocation

19.7.2.1 Licensed use of spectrum

19.7.2.2 Unlicensed spectrum

19.8 Future Deployment Scenario

19.8.1 Femtocell

19.8.2 Benefits of Femtocells

19.8.3 Critical Issues in Femtocell Deployment

19.9 Research Issues in 4G

19.10 Green Communications

EXERCISES

References

Appendix A: Abbreviations

Appendix B: Answers

References

Index

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