Advancements in Multiple Input Multiple Output (MIMO) and Orthogonal Frequency Division Multiple Access (OFDMA) as LTE-Advanced enabler in 4G Network

Abstract

Today, the demand for multimedia data services has grown up rapidly. Wireless systems face the challenges of the growing demand of higher data rates, spectral efficiency, better quality of services, increased network capacity including limited availability of radio frequency and transmission problem caused by various factors like fading and multipath distortion. The need for more sophisticated technology is possible with higher and faster data transmissions and reception. An important challenge of wireless networks is to boost the data rate and quality of services, where space-frequency resource allocation and multiuser beam forming are crucial techniques to obtain high spectral efficiency. Based on advancement in LTE-Advanced MIMO-OFDMA network in ITU-R specific higher data rate and spectral efficiency can be achieved. To have better understanding of the key technologies used in LTE-Advanced and important role they play in improving performance as well as meeting IMT-requirement, this thesis carried out a performance evaluation of enhanced uplink for both Multiple Input Multiple Output (MIMO) and Orthogonal Frequency Division Multiple Access (OFDMA) under LTE-A parameter. This thesis gives the background and methodology that investigates the advancements in MIMO technique and OFDMA technology in terms of LTE-A enabled technologies. Based on the results obtained in this report through different simulation, the options presented in this thesis for both managing interference and dealing with increased users and meeting their demand of high data rate, increased capacity, coverage, spectral efficiency and reduce latency under the advancements of MIMO-OFDMA as LTE-A enabler technologies in 4G network can be seen as positive solutions.