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BER Performance of 2x2 and 4x4 Transmit Diversity MIMO in Downlink LTE

by Uyoata E. Uyoata, James M. Noras
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International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 108 - Number 9
Year of Publication: 2014
Authors: Uyoata E. Uyoata, James M. Noras
10.5120/18941-9693

Uyoata E. Uyoata, James M. Noras . BER Performance of 2x2 and 4x4 Transmit Diversity MIMO in Downlink LTE. International Journal of Computer Applications. 108, 9 ( December 2014), 23-28. DOI=10.5120/18941-9693

@article{ 10.5120/18941-9693,
author = { Uyoata E. Uyoata, James M. Noras },
title = { BER Performance of 2x2 and 4x4 Transmit Diversity MIMO in Downlink LTE },
journal = { International Journal of Computer Applications },
issue_date = { December 2014 },
volume = { 108 },
number = { 9 },
month = { December },
year = { 2014 },
issn = { 0975-8887 },
pages = { 23-28 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume108/number9/18941-9693/ },
doi = { 10.5120/18941-9693 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-06T22:42:34.255970+05:30
%A Uyoata E. Uyoata
%A James M. Noras
%T BER Performance of 2x2 and 4x4 Transmit Diversity MIMO in Downlink LTE
%J International Journal of Computer Applications
%@ 0975-8887
%V 108
%N 9
%P 23-28
%D 2014
%I Foundation of Computer Science (FCS), NY, USA
Abstract

Multi-antenna(MIMO) techniques are reported to improve the performance of radio communication systems in terms of their capacity and spectral efficiency. In combination with appropriate receiver technologies they can also provide savings in the required transmit power with respect to target bit error rate. Long Term Evolution(LTE), one of the candidates for fourth generation(4G) mobile communication systems has MIMO as one of its underlying technologies and ITU defined channel models for its propagating environment. This paper undertakes a comprehensive verification of the performance of transmit diversity MIMO in the downlink sector of LTE. It uses models built using MATLAB to carry out simulations. It is deduced that generally increasing transmit diversity configuration from 2x2 to 4x4 offers SNR savings in flat fading channels though with a user equipment moving at 30km/hr, deploying 2x2 offers higher SNR saving below 7dB. Furthermore bandwidth variation has minimal effect on the BER performance of transmit MIMO except at SNR values above 9dB while the gains of higher modulation schemes come with a transmit power penalty.

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Index Terms

Computer Science
Information Sciences

Keywords

Transmit Diversity LTE Signal to Noise Ratio ITU Channels Bit Error Rate

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