Factors Influencing the PAPR Performance of OFDM and MIMO-OFDM Systems: A Comparison Study

Tahreer Mahmood and Seshadri Mohan
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Tahreer Mahmood: University of Arkansas at Little Rock, USA
Seshadri Mohan: University of Arkansas at Little Rock, USA

International Journal of Interdisciplinary Telecommunications and Networking (IJITN), 2019, vol. 11, issue 3, 23-33

Abstract: Multiple-input multiple-output technology together with orthogonal frequency division multiplexing (MIMO-OFDM) is an effective technique to combat multi-channel fading and to improve bandwidth efficiency. Simultaneously, it also increases the system's ability to provide reliable transmission. However, the main disadvantage of OFDM is the high peak-to-average-power ratio (PAPR), which, if not mitigated, will negatively impact practical applications. The high PAPR increases complexity and Bit Error Rate. In this research, the authors investigate the factors influencing the PAPR performance of both OFDM and MIMO-OFDM systems. The objective of this research is to make researchers in this field become familiar with this problem as well as to impart an understanding of the factors that influence PAPR. In this study, the authors classify the factors that impact PAPR into modulation schemes and a number of sub-carriers. These parameters influence the PAPR performance have been analyzed and simulated by using MATLAB. It is observed that the numbers of sub-carriers have a great effect on the PAPR performance. However, modulation schemes can have a small effect on PAPR performance.

Date: 2019
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