On companding techniques for PAPR reduction in DCT SC-FDMA system in the presence of CFOs

On companding techniques for PAPR reduction in DCT SC-FDMA system in the presence of CFOs

In the single carrier frequency division multiple access (SC-FDMA) system, the use of discrete cosine transform (DCT) instead of discrete Fourier transform (DFT) has shown improved bit error rate (BER) performance. Nevertheless, peak-to-average power ratio (PAPR) in the DCT-based SC-FDMA system is h...

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Bibliographic Details
Main Authors: Naim Ben Ali, Shri Ramtej Kondamuri, Venkata Sainath Gupta Thadikemalla, Srikar D, Pavel Trojovský, Vijaya Durga Chintala
Format: Article
Language:English
Published: Elsevier 2023-09-01
Series:Alexandria Engineering Journal
Subjects:
CFO
Companding
DCT
PAPR
SC-FDMA
Online Access:http://www.sciencedirect.com/science/article/pii/S1110016823006518
Description
Summary:In the single carrier frequency division multiple access (SC-FDMA) system, the use of discrete cosine transform (DCT) instead of discrete Fourier transform (DFT) has shown improved bit error rate (BER) performance. Nevertheless, peak-to-average power ratio (PAPR) in the DCT-based SC-FDMA system is higher than that in the DFT-based system. This paper investigates the performance of various companding schemes to reduce PAPR in DCT-based SC-FDMA systems by considering carrier frequency offsets (CFOs). Simulation results, considering parameters like BER, PAPR, and power spectral density (PSD), are provided to find the best companding technique. Furthermore, the results have been validated in a real-time indoor channel using a wireless open-access research platform (WARP) hardware.
ISSN:1110-0168

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