Mustafa M Matalgah

University of Mississippi | UM · Department of Electrical & Computer Engineering

A vehicular Rayleigh fading communication system in which a vehicular transmitter (VT) is communicating with a vehicular receiver (VR) only through a dedicated stationary amplify-and-forward (AF) relaying roadside unit (RSU) is proposed in this paper (i.e., V2RSU2V system). To capture the effect of VT and VR motion, system's fading channels from VT...

p>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...

Employing heavy conventional encryption algorithms in communications suffers from added overhead and processing time delay; and in wireless communications, in particular, suffers from severe performance deterioration (avalanche effect) due to fading. Consequently, a tremendous reduction in data throughput and increase in complexity and time delay m...

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 sign...

This paper is concerned with investigating the impact of both nodes-mobility and imperfect channel-state-information (CSI) estimation on the symbol-error-probability (SEP) performance of a multiple-relay amplify-and-forward (AF) cooperative diversity system employing Alamouti-type orthogonal-space-time-block-code (Alamouti-OSTBC) transmission at th...

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 seve...

In this article, we propose an opportunistic transmission protocol for cooperative communication systems with L relay nodes under the influence of fading channels. Unlike the protocols previously known in the literature, and given the fact that direct single-link communication outperforms multilink cooperative communication in terms of throughput f...

Traditional encryption techniques require packet overhead, produce processing time delay, and suffer from severe quality of service deterioration due to fades and interference in wireless channels. These issues reduce the effective transmission data rate (throughput) considerably in wireless communications, where data rate with limited bandwidth is...

In this paper, we analyze the performance of M- relay amplify-and-forward (AF) cooperative network in the presence of imperfect channel-state-information (CSI) and taking into account the impact of the nodes mobility. Two relaying protocols are considered; conventional-relaying (CR), in which all relays are active and participate in the relaying pr...

In this paper, we analyze the performance of M-relay amplify-and-forward (AF) cooperative network in the presence of imperfect channel-state-information (CSI) and taking into account the impact of the nodes mobility. We employ the protocol of conventional-relaying (CR), in which all relays are active and participate in the relaying process via orth...

In this paper,we consider a small-scale multipath fading channel following the α– μ generalized fading model distribution.We first derive an expression for the amount of fading () for this channel model to show the generalization attribute of this fading model recently reported in the literature. Then, we derive closed-form expressions for the aver...

Abstract—In this paper, we consider the adaptive-gain M-relay amplify-and-forward (AF) cooperative system with both conventional relaying (cr) as well as best-relay-selection (br) scheme and investigate its performance over time-selective fading, due to nodes’ mobility, in the presence of channel estimation errors. We first derive exact closed-form...

Given the broad range of applications supported, high data rate required and low latency promised; dynamic radio resource management is becoming vital for the air interface technologies such as WiMAX and LTE adopted by international standards. This study considers the OFDMA system, which has been implemented in both WiMAX and LTE technologies as th...

Encryption is a vital process to ensure the confidentiality of the information transmitted over an insecure wireless channel. However, the nature of the wireless channel tends to deteriorate due to noise, interference and fading. Therefore, an encrypted signal will be received with some errors. Consequently, due to the strict avalanche criterion (S...

Encryption is becoming a vital process to ensure security over the wireless channel. However, using well-known encryption algorithms to encrypt data in wireless communication results in a catastrophic error because of the avalanche effect, which is an inherited criterion to ensure security. Although this criterion is desirable, these algorithms do...

In this paper, we consider an M-relay amplify-and-forward (AF) cooperative system with maximal ratio combining (MRC) at the destination and investigate the effects of both the mobile cooperating-nodes speeds and the receivers' channel state information (CSI) estimation rates on the system outage performance. By CSI estimation rates we mean how much...

In this paper, we consider an M-relay amplify-and-forward (AF) cooperative system with maximal ratio combining (MRC) at the destination and investigate the effects of both the mobile cooperating-nodes speeds and the receivers' channel state information (CSI) estimation rates on the system performance. By CSI estimation rates we mean how much the re...

Due to the increased demand on wireless devices and their applications, the necessity for efficient and secure encryption algorithms is critical. A secure encryption algorithm is considered energy efficient if it uses a minimum number of CPU operations. In this paper we use numerical calculations to analyze the energy consumption for a class of enc...

The design of an efficient and dynamic radio resource management (RRM) scheme is crucial for optimizing the resource utilization and providing QoS in wireless networks. Given the broad range of applications supported, high data rate required and low latency promised, the RRM scheme is indispensable for newly emerging air interface technologies such...

Relay-based cooperative systems have recently attracted significant attention since they enable exploiting the inherent spatial diversity of wireless networks with single antenna terminals. In this paper, the authors address the error performance of a cooperative diversity network consisting of a source, a destination, and multiple dual-hop amplify...

The average bit error rate (BER) performance of interference-limited dual-hop decode-and-forward (DF) cooperative systems with cochannel interference (CCI) at both relay (R) and destination (D) nodes is analyzed in Nakagami-m fading channels with arbitrary (integer as well as non-integer) values of m. This channel condition is assumed for both the...

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, we introduce a comprehensive and platform independent complexity analysis for a class of symmetric block cryptosystems, by which it will be...

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...

In this paper, we consider a relatively new small scale multipath fading model, namely; the α-μ fading distribution. We derive expressions for the average channel capacity under different channel policies, namely; optimal power and adaptation rate (OPRA) and channel inversion with fixed rate (CIFR) considering this fading model and show the general...

Encryption is a vital process to ensure the confidentiality of the information transmitted over the insecure wireless channel. However, the nature of the wireless channel tends to deteriorate because of noise, interference and fading. Therefore, the encrypted transmitted signal will be received with some amount of error. Consequently, due to the st...

IntroductionOverview of IMT-2000 and 3G SystemsProposed 3G SystemEvolution from 2G-Based Systems to 3GUMTS Layers and Channel Structurescdma2000 Layers and Physical Channel StructuresConclusion GlossaryCross References

The outage probability in a network of cooperative unmanned airborne vehicles (UAVs) over generalized fading channels is studied analytically using finite mixture with expectation maximization technique. A relay-based topology with one ground control unit (GCU) is considered, where the cooperative UAVs can communicate with the GCU directly or throu...

In this paper, we consider a relatively new small scale multipath fading model, namely; the � µ fading distribu- tion. We derive expressions for the amount of fading and the average channel capacity for this channel model and show the generalized attribute of this fading model. The obtained expres- sions for the performance metrics reduce to other...

In this study, we consider a switched and examine combining (SEC) diversity scheme over independent and identically distributed (i.i.d.) L-branch Weibull fading channels and evaluate its performance in terms of ergodic capacity and the bit error rate (BER) for a class of coherent modulation schemes. The authors use the probability density function...

Since the early 1990s, the wireless communications field has witnessed explosive growth. The wide range of applications and existing new technologies nowadays stimulated this enormous growth and encouraged wireless applications. The new wireless networks will support heterogeneous traffic, consisting of voice, video, and data (multimedia). This nec...

The strict avalanche criterion (SAC) is a desirable property of traditional symmetric-key cryptographic algorithms. The SAC is said to be satisfied if, whenever a single input bit is complemented, each of the output bits changes with a probability of one half. In terms of the block ciphers context, such a small change in either the key or the plain...

In this paper, inspired by network coding theory we propose an efficient hybrid encryption-coding algorithm that requires using traditional encryption only for the first small amount of data. This amount of data, which we refer to as the first block, is determined by the traditional encryption algorithm to be applied on this first block. In our pro...

Due to the fact that wireless channels are an open medium to intruders and their attacks, encryption is a vital process to assure security over these channels. However, using well-known encryption algorithms to encrypt data in wireless communication will result in a catastrophic error due to the avalanche effect, which is implemented in these algor...

Cooperative communications among group of teleoperated unmanned ground vehicles (UGVs) allows to exploit spatial diversity in wireless fading channels by relaying signals between each other. Due to the high speed of the UGVs, the nature of the channel environments and the possible co-channel interference, the effect of multipath propagation and the...

The performance analysis of multi-carrier relay-based Unmanned Airborne Vehicles (UAVs) network is studied analytically over fading channels. A relay-based topology with one ground control unit (GCU) is assumed, where the cooperative UAVs can communicate with the GCU directly or through relay. The outage probability of the system is defined as the...

In this paper, we propose a 2 × 2 cooperative multiple-input multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) scheme based on Alamouti space-time coding. In this scheme, the the relay and the destination antennas receive the transmitted symbols from the source during the first stage. Then, both the relay and the destination...

In this paper, we consider a generalized non-regenerative (amplify and forward) cooperative wireless communication system with L relay nodes. The Rayleigh fading channel is assumed in both broadcasting and relaying stages and maximal ratio combining (MRC) scheme is assumed to be implemented at the receiver side. We evaluate the bit error rate (BER)...

In this paper, we propose a new transmission protocol for cooperative wireless communication system with L relay nodes under the influence of fading channels. We also propose a new switching combining scheme named preferable-link switching combining (PL-SC) to be implemented at the receiver side. We consider the source-destination link as the prefe...

Jacket matrices1, 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 du...

It is well-known that the performance of the relay-based decode-and-forward (DF) cooperative networks outperforms the performance of the amplify-and-forward cooperative networks. However, this performance improvement is accomplished at the expense of adding more signal processing complexity (precoding/decoding) at each relay node. In this study, th...

In this study, the effect of introducing cochannel interference (CCI) on the performance of diversity receivers operating over the Weibull fading channel is thoroughly investigated. More specifically, the authors derive novel bit error rate (BER) expressions for the dual-branch selection combining (SC) and post-detection equal gain combining (EGC)...

In this chapter, a cooperative broadband relay-based resource allocation technique is proposed for adaptive bit and power loading multiple-input-multiple-output/orthogonal frequency division multiplexing (MIMO-OFDM) system. In this technique, sub-channels allocation, M-QAM modulation order, and power distribution among different sub-channels in the...

Cooperative communications among group of teleoperated unmanned ground vehicles (UGVs) allows to exploit spatial diversity in wireless fading channels by relaying signals between each other. Due to the high speed of the UGVs, the nature of the channel environments and the possible co-channel interference, the effect of multipath propagation and the...

Cooperative communications, an emerging research area spurring tremendous excitement within academia and industry, has experienced an increase in demands for wireless multimedia and interactive services in recent years. Cooperative Communications for Improved Wireless Network Transmission: Framework for Virtual Antenna Array Applications provides p...

In this letter, we consider the alpha - mu channel fading model and we evaluate the moment generating function (MGF) for the probability density function characterizing this new channel model. The derived MGF expression is used in evaluating the bit error rate for different coherent modulation techniques over this generalized fading channel. We als...

A generalized likelihood ratio test is derived for detecting target patterns in multi-band spectral images with improper complex Gaussian 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...

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 i...

This paper presents simple and exact expressions for the average bit error rate (BER) of M-ary orthogonal signals with noncoherent diversity combining in independent as well as arbitrarily correlated nonidentically distributed Nakagami-m fading channels. The expressions are given in terms of elementary functions, and they do not involve numerical i...

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 obtain...

In this paper, we propose cooperative division relay- based allocation technique jointly with adaptive bit/power loading for multiple-input-multiple-output/orthogonal frequency division multiplexing (MIMO/OFDM) system. In this cooperative division technique, the transmitted stream of bits is divided into two parts. The first part is sent directly f...

The capacity of multiple input multiple output (MIMO) system over wireless channels has been investigated analytically and by simulation over different types of wireless fading channels, such as Rayleigh and Nakagami fading channels. In this paper, Finite Mixture (FM) with Expectation-Maximization (EM) algorithm is utilized to derive simple approxi...

A novel non-coherent receiver with diversity reception for binary orthogonal signals in non-identical Nakagami-g (Hoyt) fading channels (channels having arbitrary average fading powers and arbitrary fading parameters) is proposed. A closed-form expression for the average bit error probability of the proposed receiver is derived, which is given in t...

In this paper, we evaluate the bit error rate (BER) performance of PSK modulation schemes over independent and identically distributed L branches Weibull fading channel with selection and examine combining (SEC) diversity technique. We use the probability density function (PDF) approach in the BER evaluation. The derived expression for the BER is o...

Communication between the unmanned airborne vehicle (UAV) and the ground control unit (GCU) could be lost at some instant of time due to severe weather conditions and/or Interference from other neighboring transmitters and/or receivers. This research is concerned with communication loss prevention through the application of spatial tessellations (p...

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-g, and implicitly Rayleigh fading channels. The assumption of generalized distributed fading envelopes implies that the received average signal-...

The end-to-end performance of cooperative relay- based wireless communication system with nonregenerative relay over generalized Gaussian-Finite-Mixture fading channels is presented. The received signal-to-noise-ratio (SNR) is maximized by optimizing the relay gain given that the fading statistics of the links in a cooperative system are known by t...

Exact-form results are presented for integrals involving higher-order power of the one dimensional Gaussian Q-function over identical and nonidentically distributed multichannel Rayleigh fading with maximal ratio combining (MRC). The formulas known in the literature for the average of the 1st and 2nd powers are shown as special cases. The derived r...

The capacity of multiple input multiple output (MIMO) system over wireless channels has been investigated analytically and by simulation over different types of wireless fading channels, such as Rayleigh and Nakagami-m fading channels. The capacity of MIMO system over Weibull fading channels has not been considered in the literature before because...

In this paper, we propose a combined analytical and simulation framework for performance evaluation of the forward link in the cdma2000 evolution for data only (1xEV-DO) cellular systems with throughput and spectral efficiency being used as performance metrics. A closed form expression for the aggregate average throughput is derived in terms of sys...

Automating the detection process in acoustic-seismic landmine detection speeds up the detection process and eliminates the need for a human operator in the minefield. Previous automatic detection algorithms for acoustic landmine detection showed excellent results for detecting landmines in various environments. However, these algorithms use environ...

This letter proposes a new noncoherent combiner, which we call the noncoherent weighted branches combiner (NC-WBC), to mitigate the disadvantages of the conventional noncoherent equal-gain combiner (NC-EGC) in nonidentically distributed Rician fading channels. It is shown that, unlike those of the NC-EGC, the NC-WBC results in simple closed-form ex...

The performance of binary phase shift keying in a Weibull fading environment is analysed in the presence of cochannel interference (CCI) in terms of the bit error rate (BER). We derive an exact expression for the BER in this case on the basis of a characteristic function approach. Furthermore, since it is difficult to obtain the distribution of the...

This letter proposes a new noncoherent combiner, which we call the noncoherent weighted branches combiner (NC-WBC); to mitigate the disadvantages of the conventional noncoherent equal-gain combiner (NC-EGC) in nonidentically distributed Rician fading channels. It is shown that, unlike those of the NC-EGC, the NC-WBC results in simple closed-form ex...

The ergodic capacity of single input multiple output (SIMO) wireless communication systems over Nakagami-m fading channels is available in the literature for the case of identically independent distributed (i.i.d.) subchannels. However, the non- identically independent Nakagami-m case is more practical and has not been considered in the literature....

We evaluate the performance of selection combining (SC) diversity in cellular systems where binary phase-shift keying (BPSK) is employed and the desired signal as well as the cochannel interferers (CCIs) is subject to Weibull fading. A characteristic function-(CF-) based approach is followed to evaluate the performance in terms of the outage probab...

The problem of determining the outage probability in cellular systems where each of the desired signal and the cochannel interferers are lognormal shadowed and Weibull faded is considered. An exact expression is first derived for the outage probability, which involves performing a multiple-fold integration numerically. The computation complexity in...

We use the Padé approximation (PA) technique to obtain closed-form approximate expressions for the moment-generating function (MGF) of the Weibull random variable. Unlike previously obtained closed-form exact expressions for the MGF, which are relatively complicated as being given in terms of the Meijer G -function, PA can be used to obtain simple...

In this paper, we evaluate the performance of two dual-branch diversity techniques operating over the Weibull fading channel in the presence of a dominant co-channel interferer with a minimum desired signal power constraint. These two diversity schemes are selection combining (SC) and switch-and- stay combining (SSC). We derive expressions for the...

This paper presents simple, exact, and closed-form expressions for the average bit error rate (BER) of M-ary orthogonal signals with noncoherent diversity combining over independent as well as arbitrarily correlated nonidentically distributed Nakagami-m fading channels. The fading channels are allowed to have arbitrary average signal-to-noise ratio...

In this paper, we analyze the performance of binary phase shift keying (BPSK) in a Weibull fading channel in presence of cochannel interference (CCI). The performance is quantified in terms of the bit error rate (BER). Two expressions are derived for the BER in this case, the first is an exact expression based on a characteristic function (CF) appr...

This letter presents a closed form expression for the average error performance of noncoherent M-ary orthogonal signals over nonidentically distributed Rayleigh fading channels with postdetection equal-gain diversity combining (EGC). The derived expression can be easily evaluated numerically, and is valid for the general case in which the received...

The outage probability in a network of cooperative unmanned airborne vehicles (UAVs) is studied analytically. A master-slave topology with one ground control unit (GCU) is assumed where the GCU communicates directly with a master UAV. The master-slave and master-GCU links are assumed to satisfy a certain minimum data rate required by the applicatio...

Square-law combining is the traditional linear combining scheme used in conjunction with noncoherent and differentially coherent modulation/detection systems. For fading scenarios other than identical Rayleigh channels, such as nonidentical Nakagami-m channels, the square-law receiver is suboptimum, and in fact it incurs combining loss (does not ai...

In this paper, we derive a closed-form expression for the average bit error rate (BER) of multi-level (M-ary) orthogonal signals with noncoherent diversity combining in nonidentical Nakagami-m fading channels. The assumption of nonidentical fading channels means that the average received signal-to-noise ratio (SNR) over the diversity branches are d...

In this paper, we conduct a comprehensive study on the performance of dual-branch diversity M-PSK receivers with possibly correlated branches operating over Weibull fading channels in presence of cochannel interference (CCI). We use a characteristic function (CF) based approach to derive exact expressions for the bit error rate (BER) under such con...

The Weibull distribution has recently attracted much attention among the radio community as a statistical model that better describes the fading phenomenon on wireless channels. In this paper, we consider a multiple access system in which each of the desired signal as well as the co-channel interferers are subject to Weibull fading. We analyze the...

We analyze the performance of multiple carrier M-ary orthogonal signals (M-ary frequency shift keying signals) with postdetection equal-gain frequency diversity combining (EGC) over nonidentically distributed and/or arbitrarily correlated fading channels. The frequency diversity is satisfied using fast frequency hopping (FFH) technique, thereby ach...

The wireless link represents the bottleneck in the communication of a group of cooperative unmanned airborne vehicles (UAVs). Due to the high speed of the UAVs, the nature of the environments where they are usually deployed and the possible intentional jamming that might exist, the effect of phenomena such as multipath propagation and Doppler sprea...

It is well-known that noncoherent equal-gain combining (NC-EGC) is the simplest combining technique for noncoherent and differentially coherent communication systems. However, for nonidentical Nakagami-m channels (channels having nonuniform multipath intensity profile (MIP) and/or arbitrary non-integer fading parameters), the use of NC-EGC has thre...

A value added service to broadband wireless network is the remote access virtual private network (VPN). The corporate legitimate portable users can connect to their offices through a wireless network from different locations and get secure services as if they were connected to the corporate local area network. One of the main challenges is to block...

In this letter, we evaluate the performance of the dual-branch maximal ratio combining (MRC) diversity scheme in nonidentical correlated Weibull fading channels with arbitrary parameters. We first use the Pade´ approximation (PA) to find closed-form rational expressions for the moment generating function (MGF) of the output signal-to-noise ratio (S...

In this paper, we propose a combined analytical and simulation framework for performance evaluation of the forward link in the cdma2000 evolution for data only (1xEVDO) cellular systems with throughput and spectral efficiency being used as performance metrics. A closed form expression for the aggregate average throughput is derived in terms of syst...

In this paper, we consider the performance evaluation of M-ary frequency shift keying (M-ary FSK) with postdetection equal-gain diversity combining over multi-link AWGN and generalized fading channels, in which the diversity branches are arbitrarily correlated and not necessarily to be identically distributed (having non-uniform power delay profile...

First Page of the Article

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 ter...

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...

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In this paper, we propose a design for the transceiver of a new modulation scheme that is based on combining frequency and polarization modulated signals. This is referred to as hybrid frequency-polarization shift keying (FPoISK) modulation. This modulation enables representing the signal points over multidimensional constellation points space, whi...

We consider the problem of determining the outage probability in cellular systems where each of the links is lognormal-shadowed, Weibull-faded and corrupted by additive noise. We propose two solutions for this problem; a simple lower bound on the outage probability based on the concavity of the logarithmic function and an approximate expression bas...

A closed-form expression is derived for the effective aggregate throughout delivered to a population of users in a forward link 1xEV-DV cellular system. The throughput is expressed in terms of two main classes. The first class consists of parameters that are associated with the wireless physical (PHY) layer and medium access control (MAC) sub-layer...

The outage probability is one of the common metrics used in performance evaluation of cellular networks. In this paper, we derive a lower bound on the outage probability in CDMA systems where the communication links are disturbed by co-channel interference as well as additive noise. Each link is assumed to be faded according to both a lognormal dis...

We evaluate the performance of the multiple carrier M-ary frequency shift keying (MC-FSK) system over generalized fading channels. MC-FSK system represents each transmitted signal by a series of orthogonal components, which are activated based on the balanced incomplete block (BIB) design from the combinatorial theory. The performance is quantified...