Performance Evaluation of SC-FDMA Systems Using Wireless Images

Al-soufy, K. M.; Al-Kamali, Faisal S.; Al-fuhaidy, Farouk

doi:10.28933/ajcsa-2017-11-1801

Cited by 4 publications

(4 citation statements)

References 10 publications

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“…The presented results showed that OFDMA-based systems are capable to transmit encrypted images. The authors of [18] investigated transmission of unsecured images over Single-Carrier Frequency Division Multiple Access (SC-FDMA) system and the presented results showed this ability. In [19], the presented results showed the possibility of transmitting unsecured images over DST-based Multi-Carrier Code Division Multiple Access (MC-CDMA) system.…”

Section: Related Workmentioning

confidence: 98%

“…There are several attempts to investigate the performance of different wireless transceiver schemes in wireless transmission of images like [17][18][19]. In [17], the performance of the DFT, DCT and DST based OFDMA systems for transmitting an encrypted image is studied and investigated.…”

Section: Related Workmentioning

confidence: 99%

“…As a result of internet growth, wireless transmission of plain or secure images and/or video can be easily performed over multipath channels, using different wireless communication techniques like, OFDM, OFDMA, and Single-Carrier OFDMA systems. Hence, the performance of OFDMA and SC-FDMA systems for wireless transmission of image or a compressed image is studied in many research literature [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

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Secure Image Transmission through LTE Wireless Communications Systems

Al-Fahaidy

Bouthigy

Al-Shamri

et al. 2023

Preprint

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Secure transmission of images over wireless communications systems can be done using RSA, the most known and efficient cryptographic algorithm, and OFDMA, the most preferred signal processing choice in wireless communications. This paper aims to study and investigate the performance of OFDMA system for wireless transmission of RSA-based encrypted images. In fact, the performance of OFDMA systems, based on different signals processing techniques such as, discrete sine transforms (DST) and discrete cosine transforms (DCT), as well as the conventional discrete Fourier transforms (DFT) are tested for wireless transmission of gray scale images with/without RSA encryption. The progress of transmitting the image is carried by firstly, encrypting the image with RSA algorithm, then, the encrypted image is modulated with DFT-based, DCT-based, and DST-based OFDMA systems. After that, the modulated images are transmitted over a wireless multi-path fading channel. The reverse operations will be carried at the receiver, in addition to the frequency domain equalization to overcome the channel effect. Exhaustive numbers of scenarios are performed for study and investigation of the performance of the different OFDMA systems in terms of PSNR and MSE, with different subcarriers mapping and modulation techniques, is done. The obtained results indicate the ability of different OFDMA systems for wireless secure transmission of images. However, the DCT-OFDMA system has shown its superiority over the DST-OFDMA system and the conventional DFT-OFDMA system.

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Section: Related Workmentioning

confidence: 98%

Section: Related Workmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Secure Image Transmission through LTE Wireless Communications Systems

Al-Fahaidy

Bouthigy

Al-Shamri

et al. 2023

Preprint

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“…where R k is the DFT of the received signal r n and C k represents the equalizer correction term, which is computed according to the type of the equalizer. For MMSE equalizer the correction term is computed as follows [15][16][17][18]:…”

Section: The Proposed Dft-ofdma-pm Systemmentioning

confidence: 99%

DFT-Based OFDMA System with Phase Modulation for Broadband Communication

Al-fuhaidy¹,

Al-Kamali²,

Al-Soufy³

2019

AJECE

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This paper proposes, a DFT-based OFDMA with phase modulation (DFT-OFDMA-PM) system. One main advantage of the phase modulated system is the constant envelope (CE) resulted signal, i.e, 0 dB PAPR, the second advantage is the ability to improve the diversity of multipath channels. These advantages have been exploited in the proposed system of this paper. The performance of the proposed system in terms of the bit error rate (BER) is studied and investigated and compared to the previously proposed DCT-OFDMA-PM system and the conventional OFDMA system without PM via computer simulation. The key parameter that affects the performance of the PM systems, the modulation index, is also studied and the optimum value is selected using exhaustive simulation scenarios. Moreover, the PAPR is also simulated for the proposed system and compared to the conventional system. Simulation results show the significant improvement of the proposed system in terms of PAPR and BER when compared to the conventional system. The simulation results for the proposed system show the effectiveness of the proposed system for wireless broadband communications.

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