Application of New Companding Techniques on the DWT-Based SC-FDMA System

El-Rahman, Amal Fawzy Abd; Elnaby, Mustafa M. Abd; Khamis, S.; Napoleon, Sameh A.; El‐Samie, Fathi E. Abd

doi:10.1007/s40745-022-00413-9

Cited by 1 publication

(3 citation statements)

References 4 publications

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“…The data transmission is happening by generating the orthogonal subcarriers by utilizing the inverse FFT (IFFT), inverse FrFT (IFrFT) and inverse DWT (IDWT) [4][5][6]. Diverse matrix sizes i.e.…”

Section: Diverse Transformsmentioning

confidence: 99%

“…After the channel encoding, signal mapping is being performed, the output of which is then bifurcated in to parallel form. The parallel symbol stream is then fed to the IFFT/ IFrFT/ IDWT block [4][5][6]. The parallel stream then got converted back to serial form and then the cyclic prefix is added to protect the signal from inter symbol interference.…”

Section: System Modelmentioning

confidence: 99%

“…So, in literature, many alternative MCM techniques based FFT such as universal filtered multicarrier (UFMC), filter bank multi carrier (FBMC), generalized frequency division multiplexing (GFDM), orthogonal time sequence multiplexing (OTSM), and orthogonal time frequency space (OTFS) were suggested to overcome the disadvantages of the conventional OFDM technique [3]. On the other hand, other flavors of OFDM technique use other transformers such as fractional Fourier transform (FrFT) [4], wavelet packet transform (WPT) [5], and discrete wavelet transform (DWT) [6] rather than FFT to overcome problems of the OFDM technique.…”

Section: Introductionmentioning

confidence: 99%

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Performance assessment of STBC-OFDM system using different transforms over LOS and NLOS channel

Kansal,

Mounir

2023

Preprint

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Modern day users demand a robust communication that too an elevated data rate. These expectations can only be fulfilled by a hybrid combination of multiplexing techniques likes of orthogonal frequency division multiplexing (OFDM) and multiple input multiple output (MIMO) antenna systems. OFDM methodology takes care of elevated data rate requirements whereas MIMO facilitate the enhanced reliability, low bit error rate (BER) and higher spectral efficiency characteristics. The performance of conventional MIMO-OFDM system can further be enhanced by utilizing various transforms like fractional Fourier transform (FrFT) or discrete wavelet transform (DWT) in place of traditional fast Fourier transform (FFT) in OFDM. A comprehensive analysis of bit error rate (BER) and spectral efficiency for conventional MIMO-OFDM system based on FFT, FrFT, and DWT has been presented in this paper. The simulated outcome shows a significant reduction in BER and improvement in spectral efficiency in the DWT-based MIMO-OFDM system.

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Section: Diverse Transformsmentioning

confidence: 99%

Section: System Modelmentioning

confidence: 99%