The multi-stream transmission via Multiple-Output Multiple-Input MIMO systems achieves different gains using beamforming, spatial diversity and spatial multiplexing techniques. The multi-carrier modulation via Orthogonal Frequency Division Multiplexing OFDM enhances spectral efficiency and facilitates using simple transceiver structures for broadband communications. The derived techniques are needed in network planning and optimization in order to analyze coverage, interference, frequency utilization, traffic loading.
Subject Electrical and Computer EngineeringMIMO systemsOrthogonal frequency division multiplexingWireless LANs Extentxv, 98 pages DescriptionEmerging wireless technologies and standards present a design space with multiple dimensions in terms of time, physical hardware space, and technology trends.
Efficient evaluation of a desired combination of these dimensions to support multiple technologies and standards presents a significant challenge. We study the feasibility of a multiprotocol architecture without sacrificing the Quality of Service. An architecture facilitating such a mechanism can be implemented at different layers in the network stack with each layer offering a tradeoff between complexity and latency.
Careful analysis of the physical layer reveals that most blocks of the transceiver can be reused for different protocols without significant architectural change.
In addition to the feasibility analysis, we also identify common blocks in the network stack that could be possibly reused buying us significant hardware gains without sacrificing the aggregate system throughput.
In this thesis, a MIMO-OFDM system that employs Walsh sequences as block coding is designed. Simulation studies show that the proposed system exhibits high performance and comparisons show that it has low complexity compared to some of the previous systems. International Journal of Advanced Computer Research (ISSN (print) ISSN (online)) Volume-3 Number-2 Issue June Performance Analysis with Space-time coding in MIMO-OFDM Systems with. used to analysis the performance of MIMO OFDM System also used to reduce BER. of information. The channel state information can be achieved Keywords MIMO-OFDM system, Diversity gain, LS techniques, MMSE techniques, multipath fading. 1. INTRODUCTION.
Our study presents the gate count complexity and the performance analysis of programmable radio architecture with the In this thesis, we demonstrate that multiple protocols can be supported using the same hardware under acceptable latency requirements.
Complexity of the system in terms of gate count has been determined. It has been found that for shorter frame sizes, it is better to process less number of OFDM symbols at a time.
However, for larger frame sizes, it is beneficial to process large number four to eight of OFDM symbols at a time. Also, the minimum clock rate required to run the hardware, would vary depending upon the number of OFDM Symbols processed.
The switching and multiplexing overhead of the programmable radio platform has also been investigated. Finally, our simulator is capable of evaluating bottlenecks, if any.
NoteIncludes bibliographical references p.In this thesis methods for optimizing L2S interface and RRM for MIMO-OFDM wireless systems and performance measures suitable for the system level performance evaluation are developed.
The derived techniques are needed in network planning and optimization in order to analyze coverage, interference, frequency utilization, traffic loading.
Effect of Pedestrian Movement on MIMO-OFDM Channel Capacity in an Indoor Environment by Jishu Das Gupta A Thesis Submitted for the Degree of Doctor of Philosophy School of Engineering Systems Queensland University of Technology, Brisbane.
Antenna selection for energy-efficient MIMO-OFDM wireless systems Phuc Ngoc Le This thesis studies antenna selection MIMO-OFDM systems from an energy-efficiency perspective.
The aim of the thesis is to propose and analyse novel antenna Based on a convexity analysis of the energy-efficiency expressions, the optimal average energy per. MIMO-OFDM DETECTION INTRODUCTION The performance analysis is based on simulation which was done for the TGn sync proposal and with various MIMO detection algorithms.
The effect of CE on the discussing the MIMO detection algorithms and to extend the idea to the MIMO-OFDM system. In Figure a system with Nt transmit and Nr. Our study presents the gate count complexity and the performance analysis of programmable radio architecture with the n (Draft ) MIMO-OFDM based protocol stream and a OFDM based WLAN protocol stream.
The aim of this project is to maximize the transmission performance of a MIMO/OFDM system by choosing appropriate feedback under limited bits constraint, and performing adaptation on the transmitter to increase Design and Performance Analysis of MIMO/OFDM Author.