Papers by Mustafa Matalgah
Journal of Communications and Networks, Jun 1, 2010
Jacket matrices 1 , motivated by the complex Hadamard matrix, have played important roles in sign... more Jacket matrices 1 , motivated by the complex Hadamard matrix, have played important roles in signal processing, communications, image compression, cryptography, etc. In this paper, we suggest a novel approach to design a simple class of space-time block codes (STBCs) to reduce its peak-to-average power ratio. The proposed code provides coding gain due to the characteristics of the complex Hadamard matrix, which is a special case of Jacket matrices. Also, it can achieve full rate and full diversity with the simple decoding. Simulations show the good performance of the proposed codes in terms of symbol error rate. For generality, a kind of quasi-orthogonal STBC may be similarly designed with the improved performance.
Error Performance of Cryptography Transmission in Wireless Fading Channels
If an error occurs in encrypted data while transmitted over the wireless channel, it is known tha... more If an error occurs in encrypted data while transmitted over the wireless channel, it is known that the decryption process at the destination results in avalanche to the original data. Closed-form expressions for error performance of encrypted data over the wireless channel have not been given attention in literature. We consider crypto-systems signals transmitted over faded wireless channels and derive closed-form expressions for the bit error rate (BER). Numerical results and computer simulations are provided to interpret and verify the derived expressions. The results provide design engineers a quantitative insight into performance deterioration resulted from using cryptography in wireless communications using closed-form expressions rather than running time-consuming simulation programs.
Session details: W1-E: communication and information theory symposium
In this paper, we consider the analysis of cooperative relay-based amplify-and-forward system in ... more In this paper, we consider the analysis of cooperative relay-based amplify-and-forward system in terms of Shannon capacity, probability of error, and outage probability over fading channels. The relay gain is optimized with the objective of maximizing the received signal-to-noiseratio (SNR) at the destination, given that the fading statistics of the links in the cooperative system are known at the relay node. The Gaussian finite mixture is utilized to mathematically formulate, in a simple and unified way, the statistics of the received SNR at optimal power gain. These statistics include the probability density function (pdf), the cumulative distribution function (CDF), the moment generating function (MGF), and the amount of fading (AoF). Using this technique, the symbol error probability (SEP) for coherent and differentially coherent modulations are derived. Analytical expressions for Shannon capacity and the outage capacity are also derived. Monte Carlo simulation results are presented to validate the derived approximate expressions.
Average BER Analysis for $M$-ary FSK Signals in Nakagami-$q$ (Hoyt) Fading With Noncoherent Diversity Combining
IEEE Transactions on Vehicular Technology, Jul 1, 2008
This paper analyzes the average bit error rate (BER) of noncoherent M-ary frequency-shift keying ... more This paper analyzes the average bit error rate (BER) of noncoherent M-ary frequency-shift keying (FSK) signals over multichannel nonidentically distributed Nakagami-q (Hoyt) fading employing diversity combining. The first part of the paper considers the conventional postdetection noncoherent equal-gain combiner (NC-EGC), in which a Fourier series inversion formula is employed to derive a simple and rapidly converging series-based expression for the
Results for Infinite Integrals Involving Higher-Order Powers of the Gaussian Q-Function with Application to Average SEP Analysis of DE-QPSK
IEEE Transactions on Wireless Communications, Mar 1, 2008
ABSTRACT Exact results are presented for infinite integrals that consist of higher-order powers o... more ABSTRACT Exact results are presented for infinite integrals that consist of higher-order powers of the one dimensional Gaussian Q -function averaged over Rayleigh fading envelopes in multi-branch diversity reception with maximal ratio combining (MRC). Some known results for the average of the 1st and 2nd powers are shown as special cases. The results obtained in this paper are utilized to study the average symbol error probability (SEP) performance of differentially encoded quadri-phase shift-keying (DE-QPSK) in Rayleigh fading channels employing MRC, and new exact expressions are presented for different fading scenarios. The derived mathematical expressions are verified using Monte Carlo simulations.
IEEE Transactions on Communications, 2008
This paper derives exact expressions for the average error performance of M-ary orthogonal signal... more This paper derives exact expressions for the average error performance of M-ary orthogonal signals with noncoherent equal-gain diversity combining over nonidentical generalized Rician, Nakagami-m, Nakagami-q, and implicitly Rayleigh fading channels. The assumption of generalized distributed fading envelopes implies that the received average signal-to-noise ratios (SNRs) and/or the fading parameters can have arbitrary nonidentical values. The derived expressions are precisely given in terms of either one-fold integral or rapidly convergent infinite series, which can be readily evaluated numerically. In addition, they can be usefully used to study the impact of arbitrary correlation among diversity branches on the system average error performance.
IEEE Communications Letters, Aug 1, 2005
Throughput and spectral efficiency are two important metrics that are used in performance evaluat... more Throughput and spectral efficiency are two important metrics that are used in performance evaluation of 3G cellular systems. Wideband code division multiple access (WCDMA) has been adopted as an air interface technology for such systems. Usually, tedious and time consuming Monte Carlo simulations are needed to assess the performance of WCDMA in terms of throughput and spectral efficiency. In this letter, we present a simple analytical framework that can be used to evaluate the performance of downlink WCDMA operating in the time division duplex (TDD) mode without using computer simulations assuming lognormal shadowing and uniform cell loading. Numerical results are presented and show good agreement between both the proposed analytical framework and simulations.
A generalized likelihood ratio test for detecting targets in multiple-band spectral images with improper complex Gaussian noise
ABSTRACT A generalized likelihood ratio test is derived for detecting target pat- terns in multi-... more ABSTRACT A generalized likelihood ratio test is derived for detecting target pat- terns in multi-band spectral images with improper,complex,Gaus- sian noise. The GLR test generalizes previously derived tests, which were restricted to proper complex Gaussian noise. However, this generalization comes for the price of increased computational time. The GLR test is derived based on the joint multivariate pdf of the magnitude,and phase of correlated complex Gaussian variables. An expression for the probability of false alarm is obtained which shows that the test achieves a constant false alarm rate. The GLR test was applied to simulation and experimental data and showed,satisfying results. Index Terms— GLR Test, Improper Gaussian Noise, Multiple-
International Journal of Electrical and Computer Engineering (IJECE)
The use of pulse wave analysis may assist cardiologists in diagnosing patients with vascular dise... more The use of pulse wave analysis may assist cardiologists in diagnosing patients with vascular diseases. However, it is not common in clinical practice to interpret and analyze pulse wave data and utilize them to detect the abnormalities of the signal. This paper presents a novel approach to the clinical application of pulse waveform analysis using the wavelet technique by decomposing the normal and pathology signal into many levels. The discrete wavelet transform (DWT) decomposes the carotid arterial pulse wave (CAPW) signal, and the continuous wavelet transform (CWT) creates images of the decomposed signal. The wavelet analysis technique in this work aims to strengthen the medical benefits of the pulse wave. The obtained results show a clear difference between the signal and the images of the arterial pathologies in comparison with normal ones. The certain distinct that were achieved are promising but further improvement may be required in the future.
Session details: Cooperative communication systems (cooperative and cognitive networks)
Proceedings of the 6th International Wireless Communications and Mobile Computing Conference
Vehicle-to-roadside-unit-to-vehicle communication system under different amplify-and-forward relaying schemes
Vehicular Communications
3G FDD WCDMAセルラシステムにおけるスループットおよびスペクトル効率
Global Communications Conference, 2003
A low-complexity sub-optimal decoder for OSTBC-based mobile cooperative systems
2016 IEEE Wireless Communications and Networking Conference, 2016
In this paper, we consider an amplify-and-forward (AF) wireless cooperative-diversity system with... more In this paper, we consider an amplify-and-forward (AF) wireless cooperative-diversity system with Alamouti-type orthogonal-space-time-block-code (Alamouti-OSTBC) transmission at the source under the influence of the cooperating nodes' mobility. The system's links are characterized by Rayleigh frequency-flat (narrowband) and, due to nodes' mobility, time-selective (i.e., rapidly time-varying) fading channels. We first employ the conventional Alamouti's decoder (ALD) at the system's destination and show that the time-selective fading destroys its orthogonality and optimality as a result of its output's interfering and correlated decision statistics, which causes a severely degraded system symbol error probability (SEP) performance with error floors. In order to overcome with this impact, we propose and design a sub-optimal decoder (SOD) that could be employed instead of the ALD, which is capable of providing non-interfering (but still correlated) decision statistics even though the fading links are time-selective. The SEP performance analysis of this proposed SOD shows considerable improvement over that of the ALD with no error floors and without the need of any additional decoding complexity. Numerical results along with practical linklevel simulations are provided to validate the accuracy of the presented analysis and to demonstrate the system performance.
Electronics Letters, 2016
An Alamouti-type orthogonal space-time-block-code transmission over a relay-based cooperative-div... more An Alamouti-type orthogonal space-time-block-code transmission over a relay-based cooperative-diversity system under the influence of the cooperating nodes' mobility is considered. It is shown that the high nodes' mobility destroys the optimality of the conventional Alamouit's decoder (ALD) employed at the system's destination, which causes severely degraded error performance. A zero-forcing-space-timedecoder is proposed, to be applied instead of the ALD, and its capability of mitigating this severe impact of the nodes' mobility is shown.
Correction to “Hybrid Frequency-Polarization Shift-Keying Modulation for Optical Transmission&#8221
Journal of Lightwave Technology, 2005
ABSTRACT
International Journal of Information Security and Privacy, 2013
A secure cryptosystem could be very complicated, time consuming and hard to implement. Therefore,... more A secure cryptosystem could be very complicated, time consuming and hard to implement. Therefore, the complexity of the cryptosystem should be taken into account during design and implementation. In this work, the authors introduce a comprehensive and platform independent complexity analysis for a class of symmetric block cryptosystems, by which it will be easier to evaluate the performance of some used cryptosystems. Previous works lacked the comprehensiveness in their analysis, due to the fact that the memory access time was completely ignored, which greatly degrades the accuracy of the analysis and limits it to one data block only. In this paper the authors analytically compute the complexity for a class of symmetric cryptosystems in terms of the number of the clock cycles required and in terms of the required time for encryption/decryption, independently of the hardware or software used in the encryption/decryption process. Moreover, this is the first complexity analysis that co...
Results for Infinite Integrals Involving Higher-Order Powers of the Gaussian Q-Function with Application to Average SEP Analysis of DE-QPSK
IEEE Transactions on Wireless Communications, 2008
ABSTRACT Exact results are presented for infinite integrals that consist of higher-order powers o... more ABSTRACT Exact results are presented for infinite integrals that consist of higher-order powers of the one dimensional Gaussian Q -function averaged over Rayleigh fading envelopes in multi-branch diversity reception with maximal ratio combining (MRC). Some known results for the average of the 1st and 2nd powers are shown as special cases. The results obtained in this paper are utilized to study the average symbol error probability (SEP) performance of differentially encoded quadri-phase shift-keying (DE-QPSK) in Rayleigh fading channels employing MRC, and new exact expressions are presented for different fading scenarios. The derived mathematical expressions are verified using Monte Carlo simulations.
Average BER Analysis for $M$-ary FSK Signals in Nakagami-$q$ (Hoyt) Fading With Noncoherent Diversity Combining
IEEE Transactions on Vehicular Technology, 2008
This paper analyzes the average bit error rate (BER) of noncoherent M-ary frequency-shift keying ... more This paper analyzes the average bit error rate (BER) of noncoherent M-ary frequency-shift keying (FSK) signals over multichannel nonidentically distributed Nakagami-q (Hoyt) fading employing diversity combining. The first part of the paper considers the conventional postdetection noncoherent equal-gain combiner (NC-EGC), in which a Fourier series inversion formula is employed to derive a simple and rapidly converging series-based expression for the
IEEE Transactions on Communications, 2008
This paper derives exact expressions for the average error performance of M-ary orthogonal signal... more This paper derives exact expressions for the average error performance of M-ary orthogonal signals with noncoherent equal-gain diversity combining over nonidentical generalized Rician, Nakagami-m, Nakagami-q, and implicitly Rayleigh fading channels. The assumption of generalized distributed fading envelopes implies that the received average signal-to-noise ratios (SNRs) and/or the fading parameters can have arbitrary nonidentical values. The derived expressions are precisely given in terms of either one-fold integral or rapidly convergent infinite series, which can be readily evaluated numerically. In addition, they can be usefully used to study the impact of arbitrary correlation among diversity branches on the system average error performance.
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Papers by Mustafa Matalgah