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Open AccessArticle

Study of 5G-NR-MIMO Links in the Presence of an Interferer

Faculty of Engineering, Ariel University, Ariel 40700, Israel
Author to whom correspondence should be addressed.
Academic Editors: Ana Vázquez Alejos, Manuel García Sanchez, Francisco Falcone and Leyre Azpilicueta
Electronics 2021, 10(6), 732;
Received: 27 February 2021 / Revised: 15 March 2021 / Accepted: 17 March 2021 / Published: 19 March 2021
(This article belongs to the Special Issue Enabling-5G)
Many communication systems are based on the Multiple Input, Multiple Output (MIMO) scheme, and Orthogonal Space–time Block Transmit diversity Coding (OSTBC), combined with Maximal Ratio Receive Combining (MRRC), to create an optimal diversity system. A system with optimal diversity fixes and optimizes the channel’s effects under multi-path and Rayleigh fading with maximum energy efficiency; however, the challenge does not end with dealing with the channel destruction of the multi-path impacts. Susceptibility to interference is a significant vulnerability in future wireless mobile networks. The 5th Generation New Radio (5G-NR) technologies bring hundreds of small cells and pieces of User Equipment (UE) per indoor or outdoor local area scenario under a specific Long Term Evolution (LTE)-based station (e-NodeB), or under 5G-NR base-station (g-NodeB). It is necessary to study issues that deal with many interference signals, and smart jammers from advanced communication equipment cause deterioration in the links between the UE, the small cells, and the NodeB. In this paper, we study and present the significant impact and performances of 2×2 Alamouti Phase-Shift Keying (PSK) modulation techniques in the presence of an interferer and a smart jammer. The destructive effects affecting the MIMO array and the advanced diversity technique without closed-loop MIMO are analyzed. The performance is evaluated in terms of Bit Error Rate (BER) vs. Signal to Interference Ratio (SIR). In addition, we proved the impairment of the orthogonal spectrum assumption mathematically. View Full-Text
Keywords: interferer; 5G-NR-MIMO; Alamouti interferer; 5G-NR-MIMO; Alamouti
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MDPI and ACS Style

Elgam, A.; Balal, Y.; Pinhasi, Y. Study of 5G-NR-MIMO Links in the Presence of an Interferer. Electronics 2021, 10, 732.

AMA Style

Elgam A, Balal Y, Pinhasi Y. Study of 5G-NR-MIMO Links in the Presence of an Interferer. Electronics. 2021; 10(6):732.

Chicago/Turabian Style

Elgam, Avner; Balal, Yael; Pinhasi, Yosef. 2021. "Study of 5G-NR-MIMO Links in the Presence of an Interferer" Electronics 10, no. 6: 732.

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