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A New Fast Discrete Curvelet Transform Spread OFDM Waveform based on FWHT
2022 30th Signal Processing and Communications Applications Conference (SIU), 2022In this study, fast discrete Curvelet transform (FDCT) spread OFDM waveform (FWHT-FDCT-OFDM) based on fast Walsh Hadamard transform (FWHT) alternative to OFDM waveform is proposed for next generation wireless communication systems. The proposed waveform is a combination of FWHT and FDCT with OFDM waveform. The proposed waveform is tested with numerical
Gulbaz, Alihan +3 more
exaly +2 more sources
A New Waveform Design based on Sequentially Connected ILWT and FWHT Transforms
2020 43rd International Conference on Telecommunications and Signal Processing (TSP), 2020In this study, zero tail inverse Lifting wavelet transform spread fast Walsh Hadamard transformed OFDM (ZT-ILWTs FWHT OFDM) is recommended as an alternative to the OFDM waveform for the new generation of wireless transmission systems. The recommended waveform is composed of a combination of inverse Lifting wavelet transform (ILWT) and fast Walsh ...
Ali Ozen
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Performance enhancement of UWA‐OFDM communication systems based on FWHT
International Journal of Communication Systems, 2019SummaryThe available bandwidth of underwater environment tends to several kilohertz, which considers the main challenges of communications under sea water. On the other hand, the bit‐error‐rate (BER) performance degrades because of several reasons such as multipath propagation, time variabilities of the channel, attenuation, and water temperature.
Mohamed El‐Mahallawy, Adly Tag Eldien
exaly +2 more sources
Watermarking medical images with IDWT-FWHT
2018 26th Signal Processing and Communications Applications Conference (SIU), 2018During transmission of medical images over the network security problems arise due to confidentiality, verification and integrity. Medical image watermarking(MIW) is a technology developed to solve these security problems. In this paper, a new medical image watermarking algorithm based on Integer Discrete Wavelet Transform (IDWT) and Fast Walsh ...
Arda Ustubioglu +2 more
exaly +2 more sources
Audio Watermarking Based on FWHT and LUD
SpringerBriefs in Speech Technology, 2019This chapter introduces an audio watermarking algorithm based on FWHT and LU decomposition (LUD). To the best of our knowledge, this is the first audio watermarking method based on FWHT, LUD, and quantization jointly. Initially, we preprocess the watermark data to enhance the security of the proposed algorithm.
Pranab Kumar Dhar
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An image watermarking scheme based on FWHT-DCT
2010 International Conference on Networking and Information Technology, 2010Digital image watermarking is frequently used for many purposes, such as image authentication, fingerprinting, copyright protection, and tamper proofing. Imperceptibility and robustness are the watermark requirements of good watermarks. In this paper, we propose the Fast Walsh Hadamard transform (FWHT) combined with the Discrete Cosine Transform (DCT ...
Aris Marjuni, Rajasvaran Logeswaran
exaly +2 more sources
LWT-Based Audio Watermarking Using FWHT and SVD
SpringerBriefs in Speech Technology, 2019This chapter introduces an LWT-based audio watermarking scheme using fast Walsh-Hadamard transform (FWHT) and singular value decomposition (SVD) [30]. Conventional wavelet transform provides good results for its multi-resolution characteristics and perfect reconstruction.
Pranab Kumar Dhar, Tetsuya Shimamura
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Hybrid multiple watermarking technique for securing medical image using DWT-FWHT-SVD
2017 International Conference on Advanced Technologies for Signal and Image Processing (ATSIP), 2017The telemedicine is a medical practice which consists in using new technologies of information and communication (NTIC). It makes it possible to facilitate the transfer and diagnosis of several medical data at distance. The security of medical images plays an important role to ensure and guarantee the integrity and confidentiality.
Abdennaceur Baghdad
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2014 Annual IEEE India Conference (INDICON), 2014
Robust, secured, high embedding capacity and invisible digital image watermarking techniques are key requirements in the world of information security. Many existing image watermarking techniques fail to achieve perceptual quality and robustness simultaneously under high payload scenario promising strong security, because these requirements conflict ...
Baisa L. Gunjal, Suresh N. Mali
exaly +2 more sources
Robust, secured, high embedding capacity and invisible digital image watermarking techniques are key requirements in the world of information security. Many existing image watermarking techniques fail to achieve perceptual quality and robustness simultaneously under high payload scenario promising strong security, because these requirements conflict ...
Baisa L. Gunjal, Suresh N. Mali
exaly +2 more sources