BER of FRFT-based OFDM system for underwater wireless communication

Ashri, Rami M.; Shaban, Heba; El-Nasr, Mohamad Abou

doi:10.1109/nrsc.2016.7450837

Cited by 5 publications

(3 citation statements)

References 12 publications

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“…A proper order is considered to make the channel transmission matrix approximately diagonal, and consequently the ICI would be suppressed effectively [21]. Since the complexity of the FRFT is approximately equal to FFT, this method can lead to a significant improvement in system performance without increasing the complexity [20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

“…The authors in [20] focused on finding the optimal order of FRFT in order to reduce the ICI and investigated the impact of various FRFT orders on the carrier‐to‐interference ratio (CIR). Also, the authors in [22] investigated only the impact of CFO variation on the BER performance of binary phase shift keying modulation scheme. In general, the structure of this new multi‐carrier system is the same as the conventional OFDM except for that the inverse FRFT (IFRFT) is used in place of the inverse FFT at the transmitter and the FRFT in place of the FFT at the receiver.…”

Section: Introductionmentioning

confidence: 99%

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Comparative performance assessment between FFT‐based and FRFT‐based MIMO‐OFDM systems in underwater acoustic communications

Nassiri

Baghersalimi

2018

IET Communications

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In this paper, the performance of Multiple-Input Multiple-Output (MIMO) systems based on the fractional Fourier transform (FRFT) and the fast Fourier transform (FFT) in underwater acoustic (UWA) communication channels is evaluated and compared for various conditions including the number of subcarriers, modulation schemes, the number of paths between the transmitter and receiver, Doppler frequencies, and MIMO modes including diversity and multiplexing. The study demonstrates while the computational complexity of the FRFT is in the order of the FFT, the performance of the FRFT-based UWA system is superior than that of the FFT-based system for all multipath scenarios, and for the flat fading channel they achieve the same performance.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparative performance assessment between FFT‐based and FRFT‐based MIMO‐OFDM systems in underwater acoustic communications

Nassiri

Baghersalimi

2018

IET Communications

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“…In [26], we investigated the performance of the FrFT-OFDM system for UWA communications with QAM modulation.…”

Section: Introductionmentioning

confidence: 99%

A Novel Fractional Fourier Transform-Based ASK-OFDM System for Underwater Acoustic Communications

2017

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Abstract:A key research area in wireless transmission is underwater communications. It has a vital role in applications such as underwater sensor networks (UWSNs) and disaster detection. The underwater channel is very unique as compared to other alternatives of transmission channels. It is characterized by path loss, multipath fading, Doppler spread and ambient noise. Thus, the bit error rate (BER) is increased to a large extent when compared to its counterpart of cellular communications. Acoustic signals are the current best solution for underwater communications. The use of electromagnetic or optical waves obviously entails a much higher data rate. However, they suffer from high attenuation, absorption or scattering. This paper proposes a novel fractional fast Fourier transform (FrFT)-orthogonal frequency division multiplexing (FrFT-OFDM) system for underwater acoustic (UWA) communication-which employs the amplitude shift keying (ASK) modulation technique (FrFT-ASK-OFDM). Specifically, ASK achieves a better bandwidth efficiency as compared to other commonly used modulation techniques, such as quadrature amplitude modulation (QAM) and phase shift keying (PSK). In particular, the system proposed in this article can achieve a very promising BER performance, and can reach higher data rates when compared to other systems proposed in the literature. The BER performance of the proposed system is evaluated numerically, and is compared to the corresponding M-ary QAM system in the UWA channel for the same channel conditions. Moreover, the performance of the proposed system is compared to the conventional fast Fourier transform (FFT)-OFDM (FFT-OFDM) system in the absence and presence of the effect of carrier frequency offset (CFO). Numerical results show that the proposed system outperforms the conventional FFT-based systems for UWA channels, even in channels dominated by CFO. Moreover, the spectral efficiency and data rate of the proposed system are approximately double the values of the corresponding conventional OFDM systems for the same parameters.

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A Decade Bibliometric Analysis of Underwater Sensor Network Research on the Internet of Underwater Things: An African Perspective

Salami

Dogo

Makaba

et al. 2020

EAI/Springer Innovations in Communication and Computing

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BER of FRFT-based OFDM system for underwater wireless communication

Cited by 5 publications

References 12 publications

Comparative performance assessment between FFT‐based and FRFT‐based MIMO‐OFDM systems in underwater acoustic communications

Comparative performance assessment between FFT‐based and FRFT‐based MIMO‐OFDM systems in underwater acoustic communications

A Novel Fractional Fourier Transform-Based ASK-OFDM System for Underwater Acoustic Communications

A Decade Bibliometric Analysis of Underwater Sensor Network Research on the Internet of Underwater Things: An African Perspective

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