Application of Space-Time Diversity/Coding For Power Line Channels

The purpose of the present work is to evaluate the application of space-time block codes to the transmission of digital data over the power-line communication channel (PLC). Data transmitted over the power-line channel is usually corrupted by impulsive noise. In this work we analyse the performance of space-time block codes in this type of environment and show that a significant performance gain can be achieved at almost no processing expense

Performance assessment of wireless Two Way Relay Channel systems

The objective of this thesis is theoretical investigations and numerical simulations of Two Way Relay Channel (TWRC) systems, particularly in an impulsive noise environment. Special attention is given to investigation of a TWRC system based on polarized antennas. The first part of the thesis focuses on modelling of impulsive noise and the effect of impulsive noise on TWRC systems. The study was conducted by simulating the wireless TWRC models in the presence of impulsive noise. The bit error probability performance of the channel data was compared and at last their results are shown by graphs. The study has been further extended to multi antenna TWRC systems. Simulation analysis of multi antenna TWRC systems in an impulsive noise environment was conducted by using a MISO Alamouti scheme and a MIMO system. The second part of the thesis dedicated to investigation of TWRC polarization systems. A new TWRC scheme based on polarized antennas has been proposed and simulated. By polarization we are able to achieve higher spectral efficiency through the use of spatial multiplexing, and improve the reliability by spatial diversity. A new network topology based on TWRC polarization systems proposed. It is well suited to mitigate effect of delay in a communication system, particularly for high priority data transmission, or increase reliability of a communication system by redundant transmission

Performance Analysis of Modern Communication System in Realistic Environment

Multiple Input Multiple Output (MIMO) technique is one of the effective techniques to combat against fading in wireless communication system. In this thesis, based upon that, performance is evaluated for MIMO system while considering some prac­ tical scenario which was ignored for simplicity in previous works. Apart from that it is well known now a days that co-operative communication has created a new class of communication technique in wireless communication arena. It is also investigated in this thesis work how the system performs while implementing co-operative commu­nication system in an industrial application where the environment is much different from the traditional environment due to the presence of Impulse Noise. Later co­ operative communication system and the diversity technique are blended together and the performance of such system is analyzed theoretically as well as in simulation. Results acquired in this thesis will be used to bring forth publication