Analysis of Multi-User MIMO Transmission in 3GPP LTE Networks

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Supervisor:
Dr. Mráz János Albert
Department of Networked Systems and Services

Abstract

Analysis of Multi-User MIMO Transmission in 3GPP LTE Networks

The mobile communication was evolving more rapidly in the past two decades, than never before. With the evolution of mobile network generations, it developed from the circuit switched voice service to the all IP based packed switched data services.

The 3GPP LTE system contains numerous technical innovations, which can improve the network capacity, the per-user bandwith and the number of active subscribers. These technical innovations are the OFDM, OFDMA systems, higher ranked modulation schemes, adaptive resource-management and MIMO based spatial multiplexing systems.

The goal of this thesis is to summarize the main features of LTE, especially the physical layer of the radio access network and to display the communication technologies regarding the LTE implementations mentioned above.

In the course of this thesis a Matlab based 3GPP LTE link level simulator was enhanced and improved in the framework of SAMURAI research and development project organised by the European Union. The aim of the simulator is to model the physical layer of LTE radio access network and to determine the transmission properties, like bit and frame error and throughput in different radio environments.

The thesis focuses on the non-ideal channel estimating methods and investigates their impacts on the downlink transmission capacity assuming interpolation and Gaussian-estimation error in the receiver.

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