A. F. M. Shahen Shah

A. F. M. Shahen Shah
Yildiz Technical University · Department of Electronics and Communications Engineering

Ph.D.
Assistant Professor, Yildiz Technical University, Istanbul, Turkey. IEEE Senior Member.

About

48
Publications
4,305
Reads
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350
Citations
Introduction
My current research interest includes designing and performance evaluation of routing protocols, metrics. Specific research areas include cooperative communication, MAC protocols for wireless Ad hoc networks and vehicular Ad hoc networks. I also worked on bandwidth optimization, frequency reuse schemes in mobile communication. I am a senior member of IEEE and a life member of the Institution of Engineers, Bangladesh (IEB).
Additional affiliations
March 2021 - May 2021
Yildiz Technical University
Position
  • Professor (Assistant)
February 2020 - March 2021
Istanbul Gelisim University
Position
  • Professor (Assistant)
Education
September 2015 - December 2019
Yildiz Technical University
Field of study
  • Electronics & Communication Engineering
April 2011 - December 2013
Bangladesh University of Engineering and Technology
Field of study
  • Information and Communication Technology (ICT)
May 2010 - December 2011
University of Dhaka
Field of study
  • Information Technology (IT)

Publications

Publications (48)
Chapter
Unmanned aerial vehicles (UAV), more often familiar as drone, has been widely used both in civilian activities and military missions. UAV ad-hoc networks, also known as flying ad-hoc networks, are ad-hoc multi-UAV systems (FANETs). The FANET’s medium access control (MAC) and physical (PHY) layer specifications are defined by the IEEE 802.11 standar...
Article
Vehicular ad hoc networks (VANETs) have recently become more significant to intelligent transport systems (ITS). Recent works focused on improving throughput and decreasing delay. In this paper, a novel MIMO-OFDM based MAC Protocol is proposed for VANETs to enhance their performance. Multiple-input multiple-output (MIMO) and orthogonal frequency di...
Preprint
Full-text available
The automated Interstitial Lung Diseases (ILDs) classification technique is essential for assisting clinicians during the diagnosis process. Detecting and classifying ILDs patterns is a challenging problem. This paper introduces an end-to-end deep convolution neural network (CNN) for classifying ILDs patterns. The proposed model comprises four conv...
Article
Full-text available
Saving energy and improving the lifetime of wireless sensor networks (WSNs) has remained as a key research challenge for some time. Low-energy adaptive clustering hierarchy (LEACH), a classical protocol is designed originally for the purpose of reducing and balancing the network’s energy consumption. However, as the distances between the cluster he...
Article
Full-text available
Saving energy and improving the lifetime of wireless sensor networks (WSNs) has remained as a key research challenge for some time. Low-energy adaptive clustering hierarchy (LEACH), a classical protocol is designed originally for the purpose of reducing and balancing the network's energy consumption. However, as the distances between the cluster he...
Article
Full-text available
Unmanned aerial vehicles (UAVs), more generally known as drones or remotely piloted aircraft, h ave b een e xtensively u sed i n b oth c ivilian a ctivities a nd m ilitary m issions b ecause of their high mobility and low cost. Multi-UAV systems structured in an ad hoc manner called UAVs ad hoc network which is also familiar as flying ad hoc Networ...
Article
Full-text available
The automated Interstitial Lung Diseases (ILDs) classification technique is essential for assisting clinicians during the diagnosis process. Detecting and classifying ILDs patterns is a challenging problem. This paper introduces an end-to-end deep convolution neural network (CNN) for classifying ILDs patterns. The proposed model comprises four conv...
Article
Full-text available
Acne scarring occurs in 95% of people with acne vulgaris due to collagen loss or gains when the body is healing the damages of the skin caused by acne inflammation. Accurate classification of acne scars is a vital factor in providing a timely, effective treatment protocol. Dermatologists mainly recognize the type of acne scars manually based on vis...
Article
The Industrial Internet of Things (IIoT) is creating a massive impact in a wide range of applications. In addition, with the forthcoming 5G and 6G technologies, vehicular ad-hoc networks will have pioneer advancements. However, security concerns are not well addressed, as vehicular networks should be deployed at a large scale. To address the securi...
Article
Full-text available
Mobile communication systems are always in continuous evolution due to the demands of the end-users using this technology. Therefore, before the possible launch of 5G, some technologies have opened the way to the new mobile communication system. The need for technologies that provide more comfort to users has led to the construction of complex comm...
Article
Full-text available
Vehicular Ad hoc Networks (VANETs) become a very crucial addition in the Intelligent Transportation System (ITS). It is challenging for a VANET system to provide security services and parallelly maintain high throughput by utilizing limited resources. To overcome these challenges, we propose a blockchain-based Secured Cluster-based MAC (SCB-MAC) pr...
Article
Full-text available
The efficiency of cooperative communication protocols to increase the reliability and range of transmission for Vehicular Ad hoc Network (VANET) is proven, but identity verification and communication security are required to be ensured. Though it is difficult to maintain strong network connections between vehicles because of there high mobility, wi...
Article
Full-text available
Existing research shows that Cluster-based Medium Access Control (CB-MAC) protocols perform well in controlling and managing Vehicular Ad hoc Network (VANET), but requires ensuring improved security and privacy preserving authentication mechanism. To this end, we propose a multi-level blockchain-based privacy-preserving authentication protocol. The...
Conference Paper
Multiple inputs multiple outputs (MIMO) techniques are considered important methods as they significantly increase the capacity of wireless networks without additional bandwidth or transmission power. A MIMO system acquires a physical layer (PHY) and a transmission channel layered structure. As a result, support from higher layers can significantly...
Article
Full-text available
Recently, a novel cluster-based medium access control (CB-MAC) protocol has been proposed for vehicular ad hoc networks (VANETs). Though performance of CB-MAC protocol is affected by cluster size, no mechanism is provided to manage cluster size efficiently. In this paper, the performance of CB-MAC protocol is optimized for VANETs by optimizing tran...
Article
Full-text available
In vehicular ad hoc networks (VANETs), mobility between vehicles can cause rapid topology changes with frequent disconnections, which result in collisions and packet losses that make communications unstable. Alternatively, cooperative transmission can increase the reliability of communication by eliminating these problems in VANETS. In heavy traffi...
Article
Full-text available
The IEEE 802.11 standard defines the specifications of the media access control (MAC) and physical (PHY) layers for vehicular ad hoc networks (VANETs). In IEEE 802.11, distributed coordination function (DCF) is the fundamental access technique, which employs a carrier sense multiple access with collision avoidance (CSMA/CA) mechanism to access the...
Conference Paper
In this paper, performance of cooperative relaying medium access control (CR-MAC) protocol [1] is investigated for vehicular ad hoc networks (VANETs) with channel fading and capture effect under practical traffic scenarios. Though the present analysis based on idle channel condition, in reality, the performance depends on channel fading and capture...
Article
Full-text available
In vehicular ad hoc networks (VANETs), mobility among vehicles can result in rapid topology changes with frequent link breakage and unstable communications, which cause collision and packet loss. Conversely, cooperative transmission can improve communication reliability and can enhance communication rate with lower delay by alleviating wireless cha...
Conference Paper
In this paper, a novel cooperative ad hoc medium access control (MAC) protocol is proposed for autonomous vehicles (AVs) referred to as CoMACAV. Three data transmission modes have been offered to increase the throughput which are direct transmission (DT), cooperative relaying (CR) and multi-hop relaying (MHR). The IEEE 802.11 standard defined mecha...
Conference Paper
The IEEE 802.11 standard provides specifications of medium access control (MAC) layer for VANET. The performance can be optimized by optimizing contention window size. In this paper, to optimize the performance in VANETs three different artificial neural network (ANN) algorithms are used to find the optimum contention window (CW) size which are Par...
Conference Paper
In this paper, a novel cooperative relaying medium access control (CR-MAC) protocol is proposed for vehicular ad hoc networks (VANETs). Three data transmission modes have been offered to increase the throughput which are direct transmission (DT), cooperative relaying (CR) and multi-hop relaying (MHR). IEEE 802.11 standard defined mechanism only for...
Article
Full-text available
Due to relative mobility, topology changes rapidly with frequent link breakage in vehicular ad hoc networks (VANETs). Clustering VANETs into small groups limits channel contention and controls the network topology efficiently. In this study, a novel cluster-based medium access control (CB-MAC) protocol is proposed for VANETs. The cluster formation...
Chapter
In vehicular ad hoc networks (VANETs), high relative node mobility can result in rapid topology changes with frequent link breakage and unstable communications which causes collision and packet loss. Alternatively, cluster based communication can improve the reliability of communication. In this paper, a QoS aware cluster-based MAC (qCB-MAC) protoc...
Chapter
Recently, vehicular ad hoc networks (VANETs) have generated a lot of attention to researchers for the intelligent transportation systems (ITS). The IEEE 802.11 standard outlines the specification of medium access control (MAC) and physical layer (PHY) of VANETs which uses the enhanced distributed channel access function (EDCAF) to support contentio...
Conference Paper
In this paper, an analytical model is developed to investigate the performance of the IEEE 802.11 Distributed Coordination Function (DCF) for different contention window in vehicular ad hoc networks (VANETs). The relationship between performance metrics and contention window size is derived by analytical analysis based on two-dimensional (2D) Marko...
Conference Paper
Recently, vehicular ad hoc networks (VANETs) have generated a lot of attention to the researcher for intelligent transportation system (ITS). VANETs comprise vehicle to vehicle (V2V) and vehicle to infrastructure (V2I) communication. In this paper, an analytical model has been developed to investigate the effect of contention window size of the IEE...
Conference Paper
In this paper, Adaptive Model Predictive Control (AMPC) based Energy Management Strategy (EMS) for Hybrid Electric Vehicles (HEVs) is proposed to minimize the hydrogen consumption and to increase the energy sources lifetime. The EMS problem is simplified according to the control structure of the vehicle. Moreover, adaptive algorithm is used to dyna...
Conference Paper
In this paper, an analytical model is developed to assess the performance of the IEEE 802.11 distributed coordination function (DCF) for vehicular ad hoc networks (VANETs). Vehicles velocity, transmission range and vehicle density are considered. Markov chain model based analytical analysis is provided. The correlation between the performance metri...
Conference Paper
The IEEE 802.11p standard drafted to support wireless access in vehicular environments (WAVE) or vehicular ad hoc network (VANET) which uses Enhanced Distributed Channel Access (EDCA) mechanism for the contention-based prioritized Quality of Service (QoS) at the MAC layer. The EDCA mechanism defines four access categories (ACs). Each AC queue works...
Conference Paper
In this paper, a new cooperative MAC protocol is proposed for the distributed wireless networks. The proposed protocol incorporates mainly three data transmission modes, Direct Transmission (DT), Cooperative Relay (CR), and Multihop Relay (MHR), to increase throughput. Moreover, algorithm is defined to select the suitable data transmission mode as...
Article
Cooperative communication in wireless networks has become more and more attractive recently since it could mitigate the particularly severe channel impairments arising from multipath propagation. Here the greater benefits gained by exploiting spatial diversity in the channel. In this paper, an overview on cooperative communication in wireless netwo...
Book
Cooperative communication allows several nodes to cooperatively transmit signals to a particular destination. Using cooperative communication, wireless networks could mitigate severe channel impairments arising from multipath propagation. In this case, the greater benefits are gained by exploiting spatial diversity in the channel. In this book, an...
Article
Cooperative communication allows several nodes to cooperatively transmit signals to a particular destination. Using cooperative communication, wireless networks could mitigate severe channel impairments arising from multipath propagation. In this case, the greater benefits are gained by exploiting spatial diversity in the channel. However, cooperat...
Thesis
Cooperative communication in wireless networks has become more and more attractive recently since it could mitigate the particularly severe channel impairments arising from multipath propagation. Here the greater benefits gained by exploiting spatial diversity in the channel. In this report, an overview on cooperative communication in wireless netw...
Article
Frequency planning is the prime important issues for the Radio Frequency (RF) engineers. The principle goal of the analysis done in various frequency reuse factor is for proper frequency planning. In this paper, the performances for frequency reuse schemes have been analyzed. Using MATLAB R2008a, the performance of frequency reuse factors for both...
Thesis
In this report, Available Bandwidth Estimation Technique for individual Hops (ABETH) has been developed. Bandwidth estimation techniques, tools and methods are considered to develop the technique. All existing techniques like variable packet size (VPS) probing, packet pair/train dispersion (PPTD), self-loading periodic streams (SLoPS), trains of pa...

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Projects

Projects (4)
Project
In the context of our research, cooperative MAC protocols will be designed. We want to integrate both techniques to achieve maximum performance. Broadcast, unicast and multicast data transmission will be examined. Safe messages are published naturally. Unsafe data can be in unicast or multicast mode. In this project, it aims to design new MAC protocols which are broadcasting in all directions and which have different data transmission modes such as Direct Transmission and Cooperative Communication. In broadcast mode, a single sender transmits data to all nodes of the source. In Direct Transmission mode, a single sender source transmits the data to a single target recipient. In Cooperative Communication mode, a sender transmits data to a single receiver via an assistant or assistants/relays. We will examine which transmission mode will be a direct or cooperative communication. If the cooperative transmission is useful, we think about how to find the best helper.