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Research Article |

Frequency Diversity Using Random Time Delay in Amplify-And-Forward Relay

Author(s): Yu-Ra Heo1, Min-A Lee2 and Eui-Rim Jeong3*

Published In : International Journal of Electrical and Electronics Research (IJEER)        Volume 11, Issue 2

Publisher : FOREX Publication

Published : 30 June 2023

e-ISSN : 2347-470X

Page(s) : 513-517

DOI: https://doi.org/10.37391/ijeer.110237

Abstract

In a tactical wireless communication environment, it is common for device-to-device communication to occur without a base station, but this can be problematic when the distance between the source and destination is too far. Relays are often used to improve transmission distance and reliability, but amplification-based relaying can result in lower communication performance compared to other methods. This paper proposes a method for obtaining diversity gain through the application of time delay during relaying. The proposed method is compared to a conventional method that uses phase rotation to obtain diversity gain. Simulation results show that the proposed method has slightly lower or similar performance improvement compared to the conventional relay method.

Keywords: Amplify-and-Forward, Relay, Time Delay, OFDM, Frequency Diversity.




Yu-Ra Heo, Department of Mobile Convergence Engineering, Hanbat National University, Daejeon, Republic of Korea; Email: 1022hu@gmail.com

Min-A Lee, Department of Mobile Convergence Engineering, Hanbat National University, Daejeon, Republic of Korea; Email: leemina316@gmail.com

Eui-Rim Jeong*, Department of Artificial Intelligence, Hanbat National University, Daejeon, Republic of Korea; Email: erjeong@hanbat.ac.kr

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Yu-Ra Heo, Min-A Lee and Eui-Rim Jeong (2023), Frequency Diversity Using Random Time Delay in Amplify-And-Forward Relay. IJEER 11(2), 513-517. DOI: 10.37391/IJEER.110237.