Abbas Kattoush | Tafila Technical University (original) (raw)

Papers by Abbas Kattoush

Research Memorandum, 2011

dr-kattoush.web.officelive.com

... Dr. Kattoush Abbas Hasan Department of Electrical and Electronics Engineering, Al-Isra Univer... more ... Dr. Kattoush Abbas Hasan Department of Electrical and Electronics Engineering, Al-Isra University PO Box 22, 33 Al-Isra University PO 11622, Amman Jordan Correspondence Email: akattoush@isra.edu.jo akattoush@yahoo.ca ABSTRACT ...

International Journal of Information Technology and Computer Science, 2012

Abstract: Wireless digital communication networks are rapidly expanding resulting in a demand for... more Abstract: Wireless digital communication networks are rapidly expanding resulting in a demand for reliable and high spectral efficiency systems. Multi-Carrier Code Division Multiple Access (MC-CDMA) has emerged recently as a promising candidate for the next generation broad-band mobile networks. Also it was found recently that Radon-discrete wavelet transform (DWT) based Orthogonal Frequency Division Multiplexing (OFDM) is capable of reducing the Inter Symbol Interference (ISI) and the Inter Carrier Interference (ICI), which are caused by the loss of orthogonality between the carriers. Radon-DWT-OFDM can also support much higher spectrum efficiency than Fast Fourier Transform-based OFDM (FFT-OFDM). In this paper a novel Radon-DWT-MC-CDMA transceiver design will be presented based on the Radon-DWT-OFDM that is used as a basic building block in the design of MC-CDMA transceiver to increase the orthogonality against the multipath frequency selective fading channels. Simulation results ...

Int. Arab J. Inf. Technol., 2012

Wireless digital communication networks are rapidly expanding resulting in a demand for reliable ... more Wireless digital communication networks are rapidly expanding resulting in a demand for reliable and high spectral efficiency systems. Multi'Carrier Code Div ision Multiple Access (MC'CDMA) has emerged recentl y as a promising candidate for the next generation broad'band mobile networks. Also it was found recently that Radon'di screte wavelet transform (DWT) based Orthogonal Frequency Division Multiplexing (OFDM) is capable of reducing the Inter Symbol Interference (ISI) and the Inter Carrier Interference (ICI), which are caused by the loss of orthogonality between the carriers. Radon'DWT'OFDM can also support much higher spectru m efficiency than Fast Fourier Transform'based OFDM (FFT' OFDM). In this paper a novel Radon'DWT'MC'CDMA tran sceiver design will be presented based on the Radon'DWT'OFDM that is used as a basic building block in the design of MC'CDMA transceiver to increase the orthogonal ity against the multi' pa...

Abstract. Finite Radon Transform (FRAT) mapper computed in Fourier basis using fast Fourier trans... more Abstract. Finite Radon Transform (FRAT) mapper computed in Fourier basis using fast Fourier transform (FFT) algorithm has the ability to increase orthogonality of sub-carriers, it is non sensitive to channel parameters variations, and has a small constellation energy compared with conventional FFT based orthogonal frequency division multiplexing (OFDM). It is also able to work as a good interleaver which significantly reduces the bit error rate (BER) performance of the OFDM system under severe channel conditions. In this paper the idea is developed towards increasing the orthogonality and increasing spectral efficiency of OFDM system structure. FRAT computed in discrete Multiwavelet transform (DMWT) basis is implemented in OFDM systems and compared with FRAT OFDM computed in Fourier basis under different channel conditions for different channels parameters values including multi-path gains vector, multi-path delay time vector, and maximum Doppler shift. As a result, the proposed str...

Int. Arab J. Inf. Technol., 2010

Finite Radon Transform mapper has the ability to increase orthogonality of sub-carriers, it is no... more Finite Radon Transform mapper has the ability to increase orthogonality of sub-carriers, it is non sensitive to channel parameters variations, and has a small constellation energy compared with conventional Fast Fourier Transform based orthogonal frequency division multiplexing. It is also able to work as a good interleaver which significantly reduces the bit error rate. Due to its good orthogonality, discrete wavelet transform is used for orthogonal frequency division multiplexing systems which reduces inter symbol interference and inter carrier interference. This eliminates the need for cyclic prefix and increases the spectral efficiency of the design. In this paper both Finite Radon Transform and Discrete Wavelet Transform are implemented in a new design for orthogonal frequency division multiplexing. The new structure was tested and compared with conventional Fast Fourier Transform -based orthogonal frequency division multiplexing, Radon-based orthogonal frequency division multi...

Abstract. Phase unwrapping arises as a key step in several imaging technologies, from which we em... more Abstract. Phase unwrapping arises as a key step in several imaging technologies, from which we emphasize remote sensing applications like terrain analysis and generation, topographic mapping, interferometric synthetic aperture radar (ISAR). Due to various decorrelation factors, there is much noise in phase images. Phase noise degrades the visual quality of images and interferograms, increases the errors of results derived from the ISAR interferogram, and obstruct phase unwrapping. Hilbert transform (HT) as a phase unwrapping techniques was recently proposed, and its behavior in presence of noise is unknown. In this paper, one-dimensional (1-D) HT phase unwrapping algorithm is proposed to detect and eliminate phase discontinuities in N-dimensional (N-D) noisy phase arrays. The behavior of this method in presence of different noise levels is studied and compared with the other approach of phase jump detection. The phase noise filtration problem and its effect on proposed algorithm beh...

Iajit, 2010

ISRN Communications and Networking, 2012

Due to its good orthogonality, slantlet transform (SLT) is used in orthogonal frequency division ... more Due to its good orthogonality, slantlet transform (SLT) is used in orthogonal frequency division multiplexing (OFDM) systems to reduce intersymbol interference (ISI) and intercarrier interference (ICI). This eliminates the need for cyclic prefix (CP) and increases the spectral efficiency of the design. Finite Radon transform (FRAT) mapper has the ability to increase orthogonality of subcarriers, is nonsensitive to channel parameters variations, and has a small constellation energy compared with conventional fast-Fourier-transform- (FFT-) based OFDM. It is also able to work as a good interleaver, which significantly reduces the bit error rate (BER). In this paper both FRAT mapping technique and SLT modulator are implemented in a new design of an OFDM system. The new structure was tested and compared with conventional FFT-based OFDM, Radon transform-based OFDM, and SLT-based OFDM for additive white Gaussian noise (AWGN) channel, flat fading channel (FFC), and multipath selective fadin...