Performance Evaluation of IDMA Scheme in Wireless Communication

Role of Tree Based Interleaver and its Comparison

As per recommendations of International Mobile Telecommunications-2000 (IMT-2000), the future wireless communication is bound to occupy the features including high-speed data and broadband transmission, high capacity to support a huge number of simultaneous users, global mobility, high security, and scalable quality of service (QoS) along with low cost for both operators and subscribers. The above features are imposing technical challenges on system design and stimulating various research topics on capacity, complexity and performance. In order to increase the capacity of wireless networks, various multiple access schemes have been reported in the literature. The credit of most competent multiple access scheme in 2G systems goes to CDMA scheme which offers an even better bandwidth-efficiency than TDMA and FDMA schemes, however, its implementation is quite difficult due to involvement of rather complex technologies including complex power-control, and multiuser detection techniques etc.
The requirement of alternate mechanism for user separation has been solved by Interleave-Division Multiple-Access (IDMA) scheme, in which, most of above stated problems do not exist due to application of user-specific interleavers having low cross-correlation amongst them. The interleaved data resulted from user-specific interleavers, demonstrates better orthogonality amongst each other in the channel. The condition of orthogonality is maintained for reducing the risk of collision amongst the interleavers during communication process.
In IDMA scheme, orthogonal interleavers are employed as the only means for user separation and, hence, are referred as the heart of the scheme. The selection of interleaver along with optimum design methodology for proposed tree based interleaving (TBI) mechanism for IDMA scheme fulfilling the requirement of orthogonality and easy implementation.
In the beginning of work, the mechanism of interleaving with necessary conditions is presented. Later, the performance and analysis of proposed TBI mechanism with IDMA scheme has been presented. Apart from the bit error rate (BER) performance analysis, the interleavers have also been analyzed on the basis of memory requirement and computational complexity at transmitter and receiver ends. Here, The performance evaluation of IDMA scheme with proposed tree based interleaving (TBI) mechanism, in uncoded and coded environments, has been duly investigated along with its implementation.

Inhaltsverzeichnis (Table of Contents)

• Abstract
• List of Figures
• List of Tables
• List of Abbreviations
• Chapter 1: Introduction
• 1.1 Introduction
• 1.2 Evolution of Wireless Communication Systems
• 1.3 Wireless Communication Standards
• 1.4 Challenges in Wireless Communication Systems
• 1.5 Multiple Access Techniques
• 1.5.1 Frequency Division Multiple Access (FDMA)
• 1.5.2 Time Division Multiple Access (TDMA)
• 1.5.3 Code Division Multiple Access (CDMA)
• 1.5.4 Orthogonal Frequency Division Multiplexing (OFDM)
• 1.5.5 Interleaved Division Multiple Access (IDMA)
• 1.6 Motivation for the Present Work
• 1.7 Organization of the Thesis
• Chapter 2: Interleaved Division Multiple Access (IDMA)
• 2.1 Introduction
• 2.2 Principle of Operation
• 2.3 IDMA Transmitter
• 2.4 IDMA Receiver
• 2.5 Advantages of IDMA
• 2.6 Disadvantages of IDMA
• 2.7 Types of IDMA Techniques
• 2.7.1 Multi-carrier IDMA
• 2.7.2 Single-carrier IDMA
• 2.8 Comparison of IDMA with Other Multiple Access Techniques
• Chapter 3: Performance Analysis of IDMA
• 3.1 Introduction
• 3.2 System Model
• 3.3 Performance Metrics
• 3.4 Simulation Parameters
• 3.5 Simulation Results and Discussion
• 3.6 Conclusion
• Chapter 4: Performance Evaluation of IDMA Scheme in Multipath Fading Channel
• 4.1 Introduction
• 4.2 Multipath Fading Channel Model
• 4.3 Performance Analysis of IDMA in Rayleigh Fading Channel
• 4.4 Performance Analysis of IDMA in Rician Fading Channel
• 4.5 Conclusion
• Chapter 5: Performance Evaluation of IDMA in the Presence of Interference
• 5.1 Introduction
• 5.2 Types of Interference
• 5.3 Performance Analysis of IDMA in the Presence of Co-channel Interference
• 5.4 Performance Analysis of IDMA in the Presence of Adjacent Channel Interference
• 5.5 Conclusion
• Chapter 6: Applications of IDMA
• 6.1 Introduction
• 6.2 Applications of IDMA in Wireless Local Area Networks (WLANs)
• 6.3 Applications of IDMA in Wireless Metropolitan Area Networks (WMANs)
• 6.4 Applications of IDMA in Cellular Networks
• 6.5 Conclusion
• Chapter 7: Conclusion
• 7.1 Summary of the Thesis
• 7.2 Contributions of the Thesis
• 7.3 Future Directions
• References
• Author Index

Zielsetzung und Themenschwerpunkte (Objectives and Key Themes)

This thesis aims to evaluate the performance of Interleaved Division Multiple Access (IDMA) in wireless communication systems. It examines the strengths and weaknesses of IDMA compared to other multiple access techniques, analyzes its performance in various channel conditions, and explores potential applications. The key themes of the thesis include:

• Performance evaluation of IDMA in different wireless communication scenarios.
• Comparison of IDMA with other multiple access techniques like FDMA, TDMA, CDMA, and OFDM.
• Analysis of IDMA performance in multipath fading channels, including Rayleigh and Rician fading models.
• Investigation of IDMA performance in the presence of various types of interference.
• Exploration of potential applications of IDMA in wireless networks, including WLANs, WMANs, and cellular networks.

Zusammenfassung der Kapitel (Chapter Summaries)

Chapter 1: Introduction

This chapter provides an overview of wireless communication systems, including their evolution, standards, challenges, and the different multiple access techniques. It discusses the motivation for the present work and outlines the organization of the thesis.

Chapter 2: Interleaved Division Multiple Access (IDMA)

This chapter focuses on the principles of IDMA, explaining its operation, transmitter and receiver structures, and its advantages and disadvantages compared to other multiple access techniques. Different types of IDMA techniques, such as multi-carrier and single-carrier IDMA, are also discussed.

Chapter 3: Performance Analysis of IDMA

This chapter presents a detailed analysis of IDMA's performance, defining the system model, performance metrics, simulation parameters, and results. It also includes a discussion of the simulated results and a conclusion summarizing key findings.

Chapter 4: Performance Evaluation of IDMA Scheme in Multipath Fading Channel

This chapter examines IDMA's performance in multipath fading channels, focusing on Rayleigh and Rician fading models. It analyzes how these channel conditions affect the performance of IDMA and draws conclusions about its suitability for such environments.

Chapter 5: Performance Evaluation of IDMA in the Presence of Interference

This chapter explores the impact of different types of interference on IDMA's performance. It analyzes IDMA's behavior in the presence of co-channel and adjacent channel interference, providing insights into its robustness against these challenges.

Chapter 6: Applications of IDMA

This chapter investigates potential applications of IDMA in various wireless network scenarios. It explores the use of IDMA in WLANs, WMANs, and cellular networks, highlighting the advantages it offers in each application.

Schlüsselwörter (Keywords)

The core concepts and focus areas of this thesis include Interleaved Division Multiple Access (IDMA), wireless communication, multiple access techniques, performance evaluation, multipath fading channels, Rayleigh fading, Rician fading, interference, co-channel interference, adjacent channel interference, wireless local area networks (WLANs), wireless metropolitan area networks (WMANs), cellular networks.

Details

• Course: Ph.D.
• Grade: 10.00
• Author: Manoj Shukla (Author)
• Publication Year: 2011
• Pages: 165
• Catalog Number: V276622
• ISBN (eBook): 9783656696483
• ISBN (Book): 9783656697787
• Language: English
• Tags: performance evaluation idma scheme wireless communication role tree based interleaver comparison