Performance Evaluation of IDMA Scheme in Wireless Communication

Role of Tree Based Interleaver and its Comparison

Doctoral Thesis / Dissertation , 2011 , 165 Pages , Grade: 10.00

Computer Science - Internet, New Technologies

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

• Abstract
• List of Figures
• List of Tables
• Chapter 1: Introduction
• 1.1 Introduction to Wireless Communication
• 1.2 Evolution of Wireless Communication Systems
• 1.3 Challenges in Wireless Communication
• 1.4 Need for Advanced Modulation Techniques
• 1.5 Motivation for the Thesis
• 1.6 Organization of the Thesis
• Chapter 2: Literature Review
• 2.1 Introduction
• 2.2 Overview of Multi-Carrier Modulation Techniques
• 2.3 Overview of Multi-User Detection Techniques
• 2.4 Interleave Division Multiple Access (IDMA)
• 2.5 Performance Evaluation of IDMA
• 2.6 Conclusion
• Chapter 3: System Model and Performance Analysis of IDMA
• 3.1 Introduction
• 3.2 System Model
• 3.3 Performance Analysis of IDMA
• 3.4 Conclusion
• Chapter 4: Performance Evaluation of IDMA in AWGN Channel
• 4.1 Introduction
• 4.2 Simulation Setup
• 4.3 Performance Analysis of IDMA in AWGN Channel
• 4.4 Conclusion
• Chapter 5: Performance Evaluation of IDMA in Rayleigh Fading Channel
• 5.1 Introduction
• 5.2 Simulation Setup
• 5.3 Performance Analysis of IDMA in Rayleigh Fading Channel
• 5.4 Conclusion
• Chapter 6: Performance Evaluation of IDMA in Multipath Fading Channel
• 6.1 Introduction
• 6.2 Simulation Setup
• 6.3 Performance Analysis of IDMA in Multipath Fading Channel
• 6.4 Conclusion
• Chapter 7: Performance Evaluation of IDMA in Frequency Selective Fading Channel
• 7.1 Introduction
• 7.2 Simulation Setup
• 7.3 Performance Analysis of IDMA in Frequency Selective Fading Channel
• 7.4 Conclusion
• Chapter 8: Performance Evaluation of IDMA in Time Varying Channel
• 8.1 Introduction
• 8.2 Simulation Setup
• 8.3 Performance Analysis of IDMA in Time Varying Channel
• 8.4 Conclusion
• Chapter 9: Conclusion and Future Work
• 9.1 Conclusion
• 9.2 Future Work
• References
• Appendix A: Mathematical Derivations
• Appendix B: Simulation Code

Zielsetzung und Themenschwerpunkte

This thesis aims to evaluate the performance of Interleave Division Multiple Access (IDMA) scheme in various wireless communication channels. The study focuses on the application of IDMA in different channel conditions, including Additive White Gaussian Noise (AWGN), Rayleigh fading, multipath fading, frequency selective fading, and time varying channels. The thesis investigates the impact of various system parameters on the performance of IDMA, such as the number of users, the spreading factor, the code rate, and the modulation scheme.

• Performance evaluation of IDMA in different wireless communication channels
• Impact of system parameters on the performance of IDMA
• Comparison of IDMA with other multiple access techniques
• Analysis of the advantages and disadvantages of IDMA
• Potential applications of IDMA in future wireless communication systems

Zusammenfassung der Kapitel

Chapter 1 provides an introduction to wireless communication, highlighting the evolution of wireless communication systems and the challenges faced in this field. The chapter also discusses the need for advanced modulation techniques and the motivation behind this thesis. Chapter 2 presents a comprehensive literature review on multi-carrier modulation techniques, multi-user detection techniques, and IDMA. The chapter also discusses the existing performance evaluation studies of IDMA. Chapter 3 describes the system model and performance analysis of IDMA. The chapter presents the mathematical framework for analyzing the performance of IDMA in different channel conditions. Chapter 4 evaluates the performance of IDMA in AWGN channel. The chapter presents simulation results and analyzes the impact of various system parameters on the performance of IDMA in AWGN channel. Chapter 5 evaluates the performance of IDMA in Rayleigh fading channel. The chapter presents simulation results and analyzes the impact of various system parameters on the performance of IDMA in Rayleigh fading channel. Chapter 6 evaluates the performance of IDMA in multipath fading channel. The chapter presents simulation results and analyzes the impact of various system parameters on the performance of IDMA in multipath fading channel. Chapter 7 evaluates the performance of IDMA in frequency selective fading channel. The chapter presents simulation results and analyzes the impact of various system parameters on the performance of IDMA in frequency selective fading channel. Chapter 8 evaluates the performance of IDMA in time varying channel. The chapter presents simulation results and analyzes the impact of various system parameters on the performance of IDMA in time varying channel. Chapter 9 concludes the thesis by summarizing the key findings and discussing potential future research directions.

Schlüsselwörter

The keywords and focus themes of the text include Interleave Division Multiple Access (IDMA), wireless communication, performance evaluation, channel modeling, AWGN channel, Rayleigh fading channel, multipath fading channel, frequency selective fading channel, time varying channel, multiple access techniques, system parameters, simulation, and future research directions.

• 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