Enhancement of the MIMO-OFDMA Technologies

INTRODUCTION

Multipath propagation is a characteristic of all wireless communication environments. Usually there is a main route or path from a transmitter at point “A” to the receiver at point “B” [5]. Unfortunately, some of the transmitted signals take other paths, breaking objects, or layers of earth's atmosphere. Those signals with less direct paths arrive at the receiver out of phase and attenuated. One strategy to deal with multipath weak signals is simply ignored [2]. Multipath signals with much power can be too strong to ignore, however, they can degrade the performance of WLAN equipment based on current standards. MIMO takes advantage of multipath propagation to increase the effective flow, coverage and reliability of the signals [7]. Beyond combat multipath signals, MIMO puts multipath signals to work hauling and concentrating more on information.

Each of these signals are modulated and transmitted by an antenna series simultaneously and in the same frequency channel. Using multiple waveforms is a new type of radio communication, which is the only way to improve the three basic parameters of the link performance [1]. MIMO has the ability to multiply the capacity, which is a synonym of speed. A measure for measuring the wireless capability is known as the spectral efficiency. If multiple signals are transmitted, bursts containing different information on the same channel, you can double or triple the spectral efficiency [12]. Thus, more efficiency results in faster spectral information faster, more coverage, more users and better signal quality.

RESEARCH QUESTIONS

Following are the research question for this study:

RQ1: What are the methods of enhancing the MIMO-OFDMA technologies?

RQ2: How to propose a new idea to improve MIMO-OFDMA technology?

RQ3: How can a performance enhancement MIMO-OFDMA technology can be proposed for high data rate wireless communication by using MATLAB?

RQ4: How to evaluate an improved DFT based channel estimation algorithm for MIMO-OFDMA system using QPSK modulation technique?

AIMS AND OBJECTIVES

The aim of this thesis is to study the enhancement of the MIMO-OFDMA technologies. In addition, following are the objectives of this study:

To determine new idea to improve MIMO-OFDMA technology

To propose a performance enhancement MIMO-OFDMA technology for high data rate wireless communication by using MATLAB

To evaluate an improved DFT based channel estimation algorithm for MIMO-OFDMA system using QPSK modulation technique

OUTLINE OF THE THESIS

This research will focus on Future of Energy in Saudi Arabia. The study comprises of the following sections:

The first chapter introduces the topic of the research and provides the background, research scope, aims and objectives, research questions and time scale for the study.

The second chapter provides the appropriate and significant literature review for the selected research topic that signifies the past study in this field.

The third chapter provides a general idea about the research methodology that has been selected for this research. The methodology mainly includes; the research design, data collection method, ethical considerations for the research.

The fourth chapter provides the analysis of findings in a detailed manner so that a conclusive outcome can be obtained.

The fifth chapter summarizes the complete study and further presents future recommendations ...