Enhanced MIMO Influence on LTE-Advanced Network Performances

Abstract

Introduction of LTE-Advanced network brings a series of new techniques as well as an improvement of the existing ones, which contributes to better performance in relation to LTE network. Enhanced MIMO represents one of LTE-Advanced network's most significant techniques which enable considerably better performance. Spectral efficiency and throughput are important system performance indicators. The paper aims to estimate LTE-Advanced network performance by applying an enhanced MIMO. The results verify consistency with given the analytical values, as well as which system parameter has the greatest influence on the achieved results. When enhanced MIMO is applied, several performance testing scenarios have been created depending on the parameter which was analysed for the given scenario, namely: LTE-Advanced channel scenario, antenna configuration, number of HARQ retransmissions and the type of subframe mode.

A Joint Modulation-Coding Scheme and Resource Allocation in LTE Uplink

“…The matrix contains the channel frequency response of all subcarriers of a UE with N subcarriers and 14 OFDM symbols. The second step groups the mean values in sets of 12 subcarriers [30]. The third step considers the equalization (F) proposed in [19] in the frequency domain for each set given as…”

Performance Analysis of Carrier Aggregation for Various Mobile Network Implementations Scenario Based on Spectrum Allocated

“…To achieve further improvements in the IMT-A's target PDR, LTE-A supports enhanced MIMO technology. Enhanced MIMO helps to improve the spectrum efficiencies to around 30b/s/Hz in the downlink and 15b/s/Hz in the uplink [12]. In LTE release8, the spectral efficiencies were 15b/s/Hz for downlink and 6.75b/s/Hz [12].…”

“…Enhanced MIMO helps to improve the spectrum efficiencies to around 30b/s/Hz in the downlink and 15b/s/Hz in the uplink [12]. In LTE release8, the spectral efficiencies were 15b/s/Hz for downlink and 6.75b/s/Hz [12]. Heterogeneous network implementation aims to further improve spectral efficiency per unit area using a mixture of Macro-cell, Pico-cell, Femto-cell and relay base stations [13].…”