O. Daoud

American International University · Electrical and Computing Engineering

During the last decade, vehicle communications gained a huge interest and considered as emerging technologies. It makes transportation easier and safer. However, it has a serious concern with respect to the issue of sharing the information. Some crucial data must be transferred between the vehicles, such as orientation, positions, and any urgent ro...

The interest in vehicle-to-vehicle communication has gained a high demand in the last decade. This is due to the need for safe and robust smart communication, while this type of communication is vulnerable to latency and power. Therefore, this work proposes the Narrowband Internet-of-Things to enhance the robustness of the vehicular communication s...

Vehicle-to-Vehicle communication is one of the more emerging technologies in the 21st century from either the comfortable transportation or safer transportation point of view. Vehicle-to-Vehicle communication has one crucial factor, which is the huge information to be shared among vehicles, such as the position, the road data. In such situation, th...

Vehicle to Vehicle communication is one of the more emerging technologies in the 21st century either from the comfortable transportation or safer transportation point of view. Vehicle to Vehicle communication has one crucial factor which is the huge information to be shared among vehicles, such as the position, the road data. In such situation, the...

Intelligent transportation system is considered as one of the main features of the new generation of the wireless systems. Furthermore, both of high speed data transmission and processing play a crucial role for these generations. In this work, two main propositions have been detailed in order to attain an improvement in such intelligent systems pe...

In order to support the demand of the users in the new generation wireless systems (such as the smart interaction between the mobile devices and the mobile human), the resources of the intelligent transportation system should be utilized efficiently. Thus, the network structure adaptation due to the rapid changes in such communication process shoul...

Intelligent transportation system is considered as one of the main features of the new generation wireless systems, where both of high speed data transmission and processing play a crucial role. This work presents two propositions in order to attain the performance improvement for both of data transmission and processing speed. Thus, the presented...

In this work a proposition has been studied in order to check the Terrestrial Digital Video Broadcasting (DVB-T) enhancement. It deals with overcoming the effect of Peak-to-Average Power Ratio (PAPR) drawback on wireless system performances. For this purpose, a special averaging technique has been introduced in this work and consists of three diffe...

In this work a comparison has been made among different proposed algorithms in order to improve the performance of a power consumption wireless network. They areused to combat one of the Orthogonal Frequency Division Multiplexing (OFDM) technique drawbacks, which are considered as a key technique in enhancing the new era of wireless systems’ qualit...

Competitiveness in the modern wireless systems' provided services is a key factor in the development, in addition to the adaptation to/harmonization of user demand. Therefore, this paper discussed the quality of services from the point of view of the need for supporting the needed data rates. For this purpose, a benchmark based on Multi-Antenna Mul...

This article considers the existing wireless communications efficiency based on the multiband orthogonal frequency-division multiplexing (MBOFDM) benchmark. The power efficiency and frame error rates (FERs) have been investigated to find the peak-to-average-power ratio (PAPR) effect. Two impositions have been made to the benchmark: a new, lowcomple...

This work aims to study the effect of unwanted peaks and enhance the performance of wireless systems on the basis of tackling such peaks. A new proposition has been made based on wavelet transform method and its entropy. Signals with large peak-to-average power ratio (PAPR) will be examined such as the ones that is considered as the major Orthogona...

In this work, propositions to enhance the power efficiency of orthogonal frequency division multiplexing (OFDM) have been investigated, which has been considered as a benchmark for the new generation of ultra-wideband wireless systems; multiband (MBOFDM) has been taken into consideration. Three main propositions have been used to check the system’s...

This research presents alternative solutions for an Energy Efficiency Management System (EEMS) serving as a framework for optimizing the energy consumption algorithm and lowering energy consumption. First, a monitoring Wireless Sensor and Actuator Network (WSAN) is used for sensing, measuring, gathering data, and modeling all the dynamic disturbanc...

This research presents alternative solutions for an Energy Efficiency Management System (EEMS) serving as a framework for optimizing the energy consumption algorithm and lowering energy consumption. First, a monitoring Wireless Sensor and Actuator Network (WSAN) is used for sensing, measuring, gathering data, and modeling all the dynamic disturbanc...

An enhancement proposition for a Terrestrial Digital Video Broadcasting (DVB-T) systems is discussed in this work. DVB-T physical layer uses a powerful technique namely Orthogonal Frequency Division Multiplexing (OFDM) technique, which has been used to combat the channel’s effect. However, it has a major drawback that degrades its efficiency; namel...

A new work has been proposed in this paper in order to overcome one of the main drawbacks that found in the Orthogonal Frequency Division Multiplex (OFDM) systems, namely Peak to Average Power Ratio (PAPR). Furthermore, this work will be compared with a previously published work that uses the neural network (NN) as a solution to remedy this deficie...

This work makes use of the entropy in order to propose a wavelet transformation algorithm to detect the odd peaks. Furthermore, this algorithm has been used to enhance the Orthogonal Frequency Division Multiplexing (OFDM) system performance based on combatting the peak-to-average power ratio (PAPR) problem. Three main stages are used to fulfill the...

This work aims to study the effect of unwanted peaks and enhance the performance of wireless systems on the basis of tackling such peaks. A new proposition has been made based on wavelet transform method and its entropy. Signals with large peak-to-average power ratio (PAPR) will be examined such as the ones that are considered as the major Orthogon...

In this work a comparison has been made among different proposed algorithms in order to improve the performance of a power consumption wireless network. They are used to combat one of the Orthogonal Frequency Division Multiplexing (OFDM) technique drawbacks, which are considered as a key technique in enhancing the new era of wireless systems’ quali...

a One of Orthogonal Frequency Division Multiplexing deficiency has been taken into consideration in this work. A proposition has been made to tackle the Peak to Average Power Ratio (PAPR) problem. The proposed work will be based on a special averaging adaptive wavelet transformation (SAAWT) process. It will be compared with two main works that has...

Due to the need for enhancing the wireless systems performance, a new technique, and over the last decades, has been imposed to such systems, namely Orthogonal Frequency Division Multiplexing (OFDM). In order to overcome one of the main OFDM drawbacks a new proposal has been investigated, which could limit the usage of such system in the nonlinear...

in this work a comparison among different proposed algorithms has been done to check the performance improvements for current wireless technologies. Orthogonal Frequency Division Multiplexing (OFDM) technique is one of the main techniques that are uses to enhance the quality of service (QoS) for beyond third generation (B3G) systems. This is in ord...

This work proposes a solution to overcome the effect for one of the main drawbacks of these days’ wireless systems, where Multiple-Input Multiple-Output (MIMO)-Orthogonal Frequency Division Multiplexing (OFDM) combinations has been used. High peak-to-average power ratio (PAPR) arises after the OFDM stage and reduces the performance of the used nonl...

Many current communication systems suffer from perf ormance degradation due to the high sensitivity to high power peaks especially in the nonlinear device s. The author introduces a new concept based on the Pulse Width Modulation (PWM), namely MIMO-OFDM syst em based PWM (MO-PWM) to overcome this deficiency. Here, the peak-to-average power ratio (...

A new work based-wavelet transform is designed to overcome one of the main drawbacks that found in the present new technologies. Orthogonal Frequency Division Multiplexing (OFDM)is proposed in the literature to enhance the multimedia resolution. However, the high peak power (PAPR) values will obstruct such achievements. Therefore, a new proposition...

In this paper, the performance of wireless systems has been improved based on a proposition of a new peak detection algorithm based on the entropy of the wavelet transforms [1] and to be imposed to the Sniffer Mobile Robot (SNFRbot). This enhancement has been compared with a previously published work that uses a predistortion neural network (PDNN)...

The performance of wireless systems has been studied on the basis of tackling the unwanted peak. A wavelet transform method was used for this purpose. Specifically, this proposition has been applied to combat the large peak-to-average power ratio (PAPR), which is one of the major Orthogonal Frequency Division Multiplexing (OFDM) system's drawbacks...

In acute respiratory distress syndrome (ARDS) and acute lung injury (ALI), a conservative fluid management strategy improves lung function but could jeopardize extrapulmonary organ perfusion. The objective was to evaluate the diagnostic accuracy of echocardiography to predict tolerance of negative fluid balance (NFB) in patients with ARDS/ALI. A pr...

Las peritonitis corresponden a una inflamación aguda del peritoneo cuyas causas más frecuentes son infecciosas, la mayoría de las veces por perforación del tubo digestivo. Se distinguen las infecciones extrahospitalarias y las infecciones nosocomiales, principalmente postoperatorias. Los gérmenes implicados son los de la flora digestiva (enterobact...

Le peritoniti corrispondono a un’infiammazione acuta del peritoneo le cui cause più frequenti sono infettive, il più delle volte per perforazione del tubo digerente. Si distinguono le infezioni extraospedaliere e le infezioni nosocomiali, soprattutto postoperatorie. I microrganismi implicati sono quelli della flora digestiva (enterobatteri e anaero...

this work proposes a new algorithm to enhance the performance of the speaker verification over the communication systems based Multiple-Input Multiple-Output (MIMO) - Orthogonal Frequency Division Multiplexing (OFDM) techniques. The algorithm mainly tackles and overcomes the effect of the high Peak-to-Average Power Ratio problem that is found in OF...

This work proposes a new peak detection algorithm based on the entropy of the wavelet transforms. Moreover, this work has been applied to combat one of the major Orthogonal Frequency Division Multiplexing (OFDM) system’s drawbacks; namely peakto- average power ratio (PAPR). The proposed algorithm is divided into three main stages; reconstruction ba...

In this work a new algorithm has been proposed to improve the wireless systems that are compatible with the current new technologies. Therefore, Denoise Orthogonal Frequency Division Multiplexing (OFDM) symbols and Replace the high Peak-to-Average Power Ratio (PAPR); (DORP) has been modified. In DORP, wavelets techniques have been used to denoise t...

Capacity in Wideband Code Multiple Access (WCDMA) systems is interference limited, it is also strongly linked with coverage. The greater the level of influx of users within the cell, the higher the interference and hence the lower the cell coverage becomes and vice versa. This is called Cell Breathing. In this paper a Walsh coding is used as a prec...

In this work, an enhancement of a previously published work that tackles the use of automatic speaker verification (ASV) techniques in the Beyond Third generation (B3G) cellular systems has been proposed. The new proposition has been studied to overcome the effect of the Peak-to-Average Power Ratio (PAPR), which is a vital problem that found in the...

This study presents a proper way to improve the multiple-input multiple-output orthogonal frequency division multiplexing (OFDM) system by proposing a new tackling method to reduce the peak-to-average power ratio (PAPR). It is attained by reconstructing the fast Fourier transform block in the OFDM based on the wavelet packet transform, called forwa...

An optical Orthogonal Frequency Division Multiplexing (OFDM) has been proposed based on Wavelet packet transform (WF-O-FDM). In this paper, a performance investigation has been made to check the validity of the proposed work. This investigation has been made based on two crucial factors, BER and the Complementary Cumulative Distribution Function (C...

One of the most promising solar cell devices is cadmium telluride (CdTe) based. These cells however, have their own problems of stability and degradation in efficiency. Measurements show that CdS/CdTe solar cell has high series resis-tance which degrades the performance of solar cell energy conversion. Both active layers (CdS and CdTe) had been fab...

With the growing trend toward distant security verification systems for telephone banking, biometric security measures and other remote access applications, Automatic Speaker Verification (ASV) has attracted a great attention in recent years. The complexity of ASV system and its verification time depends on the number of feature vector elements. Th...

In this research paper, Arabic vowels recognition system using very promising techniques; wavelet packet transform (WT) with entropy and neural network was presented. Trying to enhance the recognition process, three types of entropies were applied for the wavelet packet (WP) of the speech signals. Moreover, different levels of WP were used in order...

The management of bronchial fistula associated with acute lung injury raises two major concerns: (1) high ventilation pressures are necessary for lung recruitment but detrimental for fistula healing, and (2) adequate lung recruitment is prevented by large air leak. Primary surgical closure of bronchial fistula should be attempted but is rarely succ...

Capacity in Wideband Code Multiple Access (WCDMA) systems is interference limited, it is also strongly linked with coverage. The greater the level of influx of users within the cell, the higher the interference and hence the lower the cell coverage becomes and vice versa. This is called Cell Breathing. In this paper a Walsh coding is used as a prec...

This work aims to enhance the Quality of Service (QoS) of the third-generation (3G) cellular networks. The quality of voice traffic over IP networks (VoIP) is greatly reduced due to the fact that packets in IP networks suffer from packet loss which is inevitable due to the best-effort nature of these networks. Many techniques have been proposed to...

This paper investigates the utilization of wavelet filters via multistage convolution by Reverse Biorthogonal Wavelets (RBW) in high and low pass band frequency parts of speech signal. Speech signal is decomposed into two pass bands of frequency; high and low, and then the noise is removed in each band individually in different stages via wavelet f...

This paper proposes a new peak-to-average power ratio (PAPR) reduction method for a multiple-input multipleoutput (MIMO)-orthogonal frequency division multiplexing (OFDM) systems based on a genetic algorithm (GA). In this proposition we have combined a previously published work with the genetic algorithm to enhance both of the PAPR reduction ratios...

This paper proposes a new peak-to-average power ratio (PAPR) reduction method for a multiple-input multiple-output (MIMO)-orthogonal frequency division multiplexing (OFDM) systems based on a genetic algorithm (GA). It has been introduced to be compatible with Radar systems, where the GA was used to optimize the MIMO-OFDM symbols in such way that co...

In The robustness to noise in speaker identification systems is improved by applying Continuous Wavelet Transform (CWT). In this work, essential speaker features are used to investigate the identification accuracy in non-stationary signals. These features are extracted using Mel Frequency Cepstral Coefficients (MFCC) and CWT for speech signals. In...

In this paper, the Orthogonal Frequency Division Multiplexing-Free Access Technique (OFDM-FAT) system's performance is checked over two different channels using Gold sequenced input data. This performance is checked through the BER investigation of an OFDM system-based BPSK and 16QAM modulation techniques. The overall system is simulated to analyze...

In this paper, a predistortion neural network (PDNN) architecture has been imposed to the Sniffer Mobile Robot (SNFRbot) that is based on spatial multiplexed wireless Orthogonal Frequency Division Multiplexing (OFDM) transmission technology. This proposal is used to improve the system performance by combating one of the main drawbacks that is encou...

In this paper, a Low-Density-Parity Check (LDPC) encoder is used to effectively reducing Peak to Average Power Ratio (PAPR) problem in Orthogonal Frequency Division Multiplex technology (OFDM) which is the one behind modern handheld television. In addition the Multiple-Input Multiple-Output (MIMO) antennas technology is implemented to solve recepti...

This work deals with the performance of a Sniffer Mobile Robot (SNFRbot)-based spatial multiplexed wireless Orthogonal Frequency Division Multiplexing (OFDM) transmission technology. The use of Multi-Input Multi-Output (MIMO)-OFDM technology increases the wireless transmission rate without increasing transmission power or bandwidth. A generic multi...

Peak-to-average power ratio (PAPR) is a major drawback in most multi-carrier communication techniques such as orthogonal frequency division multiplex system (OFDM). OFDM consists of lots of independent modulated subcarriers, as a result the amplitude of such a signal can have very large values. These large peaks increase the amount of intermodulati...

Convolutional coding has been classically used in channel coding to provide Forward Error Correction (FEC) capability to the system by adding some carefully designed redundant information to the data being transmitted through the channel. However, in this work, we use convolutional codes for a different purpose: the reduction of the Peak-to-Average...

European terrestrial digital video broadcasting (DVB-T) standard has been launched based on the well knows modulation technique; orthogonal frequency division multiplexing (OFDM), which when used in conjunction with channel coding is known as COFDM. This paper will show the efficiency of COFDM in different DVB-T environments based on a compliant DV...

The Speaker identification is the process of determining which registered user provides a given utterance. In this paper, a powerful combination between the Discrete Wavelet Transform (DWT) and logarithmic Power Spectrum Density (PSD) is used for speaker first five formants extraction of one utterance, that are used as distinguishable classificatio...

Orthogonal Frequency Division Multiplexing (OFDM) is a promising technique in the next evolution of the mobile telephony, However it suffers from Peak to Average Power Ratio (PAPR). It is a problem for broadcast engineers in many different applications. Non-linearities can cause severe out-of-band radiation when confronted with high PAPRs. Previous...

Handheld devices are becoming more and more popular across the world although there are often still reception problems. To solve these reception issues, technology such as multiple antenna systems are being investigated. One drawback to such systems is that of peak to average power ratio - an effect where out of band radiation can cause distortions...

A systematic procedure for a new approach to reducing the high Peak-to-Average Power Ratio (PAPR) of OFDM using turbo coding is described in this paper. Part of the produced symbol from the turbo coding process with low PAPR is sent instead of the original OFDM symbol, whilst the rest is sent through different antenna(s). This technique can support...

Owing to the susceptibility to the peak-to-average power ratio (PAPR) on orthogonal frequency division multiplexing (OFDM) systems, the authors introduce a novel approach based on turbo coding to improve OFDM (PAPR) performance. In the paper, it is shown that even for different types of modulation methods and coding rates, the technique is still ap...

Digital video broadcasting - handheld (DVB-H) is the technology driving mobile TV, which uses orthogonal frequency division multiplexing (OFDM) systems with multiple-input multiple-output technology (MIMO). These mobile communication systems have a promising future of supporting high data rate transmissions for both video and data. However, since t...

This paper presents a systematic derivation of the channel capacity of MIMO-OFDM systems. In addition, we model a new MI MO channel to help in understanding the effect of spatial multiplexing on the MIMO channel, such as reducing the capacity and the BER, if spatial correlation is high. This effect will be found for some of the Space Division Multi...

This paper proposes a new technique to optimise the PAPR. It is based on increasing the OFDM symbol period by using a coding technique and then transforming the encoded symbol to be in parallel blocks. One of these blocks, which contain the lowest PAPR, will join the original signal, while the others will be sent as extra information. This informat...

Many generations have been developed and still a big challenge for the researcher to meet the Quality of service (QoS) in different applications. As the demand to meet the QoS of high-quality multimedia application is increasing, the development of the future generation (4G) wireless and mobile communication systems must be based on powerful techno...