RETRACTED: PAPR reduction using OQAM for spectrum sensing
International Journal of Pervasive Computing and Communications
ISSN: 1742-7371
Article publication date: 3 December 2020
Issue publication date: 21 July 2021
Retraction statement
The publishers of International Journal of Pervasive Computing and Communications wish to retract the article N., R. and M., S.S. (2021), “PAPR reduction using OQAM for spectrum sensing”, International Journal of Pervasive Computing and Communications, Vol. 17 No. 3, pp. 301-314. https://doi.org/10.1108/IJPCC-08-2020-0106.
An internal investigation into a series of submissions has uncovered evidence that the peer review process was compromised. As a result of these concerns, the findings of the article cannot be relied upon. This decision has been taken in accordance with Emerald’s publishing ethics and the COPE guidelines on retractions.
Despite numerous attempts to contact the authors, the journal has received no response; the response of the authors would be gratefully received. The publishers of the journal sincerely apologize to the readers.
Abstract
Purpose
The tremendous growth of wireless applications and the demand for high data rate, the spectrum utilization improvement has been the most crucial challenges for wireless communication. Adapting cognitive radio with orthogonal frequency division multiplexing or offset quadrature amplitude modulation (OFDM/OQAM) improves the spectrum and energy efficiencies.
Design/methodology/approach
Thus, it overcomes the spectral leakage problem at the transmitter side and leads to less interference from secondary user (SUs) to primary user (PUs) and between the SUs in cognitive radio technology. The benefit of exploiting pulse shape filtering in the OFDM/OQAM is to not only eliminate the requirement of the guard bands but also reduce the out of band energy transmission, which also improves the spectral isolation from the neighboring systems. But the high peak to average power ratio (PAPR) phenomenon is a common issue in the majority of the multicarrier modulation systems and thus OFDM/OQAM is no exception in this case.
Findings
Therefore, this paper aims to examine the effect of integrating the Walsh–Hadamard Transform (WHT) on the power spectral density and investigates the problem of PAPR in the WHT/OQAM system.
Originality/value
Thus, it overcomes the spectral leakage problem at the transmitter side and leads to less interference from SUs to PUs and between the SUs in cognitive radio technology. The benefit of exploiting pulse shape filtering in the OFDM/OQAM is to not only eliminate the requirement of the guard bands but also reduce the out of band energy transmission, which also improves the spectral isolation from the neighboring systems. But the high PAPR phenomenon is a common issue in the majority of the multicarrier modulation systems thus OFDM/OQAM is no exception in this case.
Keywords
Citation
N., R. and M., S.S. (2021), "RETRACTED: PAPR reduction using OQAM for spectrum sensing", International Journal of Pervasive Computing and Communications, Vol. 17 No. 3, pp. 301-314. https://doi.org/10.1108/IJPCC-08-2020-0106
Publisher
:Emerald Publishing Limited
Copyright © 2020, Emerald Publishing Limited