Abdul Qadeer Khan Rajput

Wireless Networks, Information Processing and Systems

Keynote Speech: Role of PCSIR in Industrial Development of Pakistan -- Keynote Speech: Computer Vision: Object Recognition and Scene Interpretation -- Electronic Automatic Gear Shifting System for a Motorcycle -- Segmentation of Arabic Text into Characters for Recognition -- Improved Texture Description with Features Based on Fourier Transform -- Optimization of Projections for Parallel-Ray Transmission Tomography Using Genetic Algorithm -- Seasonal to Inter-annual Climate Prediction Using Data Mining KNN Technique -- Application of a Proposed Efficient Smoothing Algorithm on Directional Vectors for Isolated Handwritten Characters -- Architecture Based Reliability and Testing Estimation for Mobile Applications -- A Framework to Achieve Reverse Channel Multicast in IEEE 802.16 Based Wireless Broadband Networks for Interoperability with IP Networks -- A Dynamical System and Neural Network Perspective of Karachi Stock Exchange -- A Novel Approach to Non Coherent UWB Reception -- Load Balancing in EAMC to Integrate Heterogeneous Wireless Systems -- A Speech Recognition System for Urdu Language -- The Future of Satellite Communications in Pakistan -- The Small World of Web Network Graphs -- Application of Color Segmentation Using Online Learning for Target Tracking -- Iterative Learning Fuzzy Gain Scheduler -- Comparative Analysis of Mobile IP and HAWAII -- Video Transport over Heterogeneous Networks Using SCTP and DCCP -- Implementing Constructivist Pedagogical Model in Dynamic Distance Learning Framework -- Effect of Schedule Compression on Project Effort in COCOMO II Model for Highly Compressed Schedule Ratings -- The Concept of Bio-fitness in Bio-inspired Computational Metaphor Abstraction -- Analysis of MANET Routing Protocols under TCP Vegas with Mobility Consideration -- CMMI and OPM3: Are They Compatible? -- Impact of Cluster Size on Efficient LUT-FPGA Architecture for Best Area and Delay Trade-Off -- Effects of Social Status on Foetal Growth Using Obstetric Ultrasonography – A Biometric Approach -- Bioinformatics Awareness System for Skin Diseases Using Stem Cells Therapy in the Perspective of eHealth -- How to Build an Open Source Render Farm Based on Desktop Grid Computing -- Implementation Challenges for Nastaliq Character Recognition -- Enhancing Business Decisions with Neurofuzzy Technology -- A System Design for a Telemedicine Health Care System -- Performance Analysis of PDC-OCDMA System with APD Mismatch -- Blocking Probabilities in WDM Switching Networks Using Overflow Analysis Method -- Design and Implementation of a Selective Harmonic Elimination SPWM Strategy-Based Inverter -- Case Study: Investigating the Performance of Interactive Multiple Motion Model Algorithm for a Crossing Target Scenario -- A Novel Approach for the Control of Dual-Active Bridge DC-DC Converter -- Importance of Data Center Philosophy, Architecture and Its Technologies -- Keynote Address: Is It Right and Is It Legal? -- Practical Optimal Caching Using Multiple Virtual Caches in Multiple Query Optimization -- A Design and Chronological Survey of Decision Feedback Equalizer for Single Carrier Transmission Compared with OFDM -- Speaker Verification Based on Information Theoretic Vector Quantization -- Detecting Trojans Using Data Mining Techniques -- Enabling MPSoC Design Space Exploration on FPGAs -- Range Based Real Time Localization in Wireless Sensor Networks -- PrISM: Automatic Detection and Prevention from Cyber Attacks -- A Pretty Safe Strategy for Analyzing Discrete Security Assessment Framework in Wireless Sensor Networks -- Renewable Energy for Managing Energy Crisis in Pakistan.

Design and analysis of the security assessment framework for achieving discrete security values in wireless sensor networks

The paper presents a ready-to-use security assessment framework for wireless sensor networks (WSNs). The parameters in the proposed security assessment framework perform independent security assessment of WSNs and of their applications. Our proposed framework uses actual responses of the entities (such as nodes, communication link and network response) to assign numerical values for security assessment of WSNs. The method for calculating the optimal values for each security parameter of the framework is also discussed. Our proposed framework is designed to avoid unwanted impacts of the complexities of security algorithms, communication protocols and strong cryptography. Usually, the complexity of algorithms disguises the actual assessment of the WSN, but the independence of the proposed framework from these security-disguising objects makes this framework better than other assessment frameworks in terms of scalability.

Development of Wireless Sensor Networks for Smart Civil Structures and Highway Safety

We propose a unique model Wireless Sensor Networks for Intelligent Spaces (WIS), for Smart Civil Structures, which aims to cover utility of WSN in Intelligent Structures. WIS uses smoke detectors that monitor different parts of the building and communicate to track the spread of the fire. WIS utilizes stress and motion sensors, built into the civil structures, in order to monitor the health of such large structures. We present a novel model of Vehicular Sensor Network (VSN), known as Sensor-VISION (sVISION) which extends the idea of WSN in Intelligent Transportation System (ITS). Few basic MAC protocols for WSN like Low Duty-Cycle (LDC) protocols and Wake up concepts, Sparse Topology and Energy Management (STEM) and Sensor-MAC (SMAC) have been discussed and two of them have been simulated using MATLAB. Using Crossbows Basic WSN kit, we have obtained real-time sensor values that can be extended utilizing application-specific sensors.

WiMAX Network Optimization - Analyzing Effects of Adaptive Modulation and Coding Schemes Used in Conjunction with ARQ and HARQ

The flexibility of WiMAX framework offers new dimensions for cross-layer optimization and can be exploited to optimize the application performance. This article focuses on identifiers that have direct impact on Quality of Service (QoS)and effect of such identifiers is evaluated through computer simulation using OPNET Modeler 14.5 Wireless Suite. In this paper we have used advanced WiMAX features such as Adaptive Modulation and Coding (AMC), Automatic Repeat Request(ARQ) and Hybrid-ARQ to tune the WiMAX network MAC Layer such that its adaptation improves both capacity and delay (thus optimize the performance). ARQ is treated as higher layer to HARQ. HARQ gives up after maximum retransmissions. HARQ performs fast retransmissions and ARQ takes over in cases HARQ fails after multiple retransmissions. This gives an added layer of protection to data. HARQ is proved to be most suitable (when used with aggressive modulation and coding) for WiMAX due to its hybrid nature as it takes into account both the MAC and link layer. Using ARQ in conjunction with HARQ gives slight improvement in BLER (Block Error Rate) but at the expense of high UL frame utilization.

A Pretty Safe Strategy for Analyzing Discrete Security Assessment Framework in Wireless Sensor Networks

The current research and development in the wireless sensor networks (WSNs) make them an ideal infrastructure for variety of applications. Various commercial projects are in need of an increased and on-demand security of WSNs due to varying security requirements. To fulfill these requirements, the develop-ment of application-specific security frameworks of WSNs has been an open area for research. In order to determine the security strength of various security frameworks, we formulate a cooperative strategy to perform assessment of these frameworks through (D-SAFE) Discrete Security Assessment FramEwork.

Optimizing WiMAX: A Dynamic Strategy for Reallocation of Underutilized Downlink Sub-Frame to Uplink in TDD Mode

WiMAX networks experience sporadic congestion on uplink when applications running at subscriber stations need more bandwidth to transmit than allocated. With the fast proliferation of mobile Internet, the wireless community has been looking for a framework that can address the issue of impediment on uplink. Due to asymmetric behavior of Internet applications downlink sub-frame is expected to have longer duration as compared to uplink. According to IEEE 806.16 standard for WiMAX the segmentation of TDD frame between uplink and downlink can be dynamically redefined even at runtime. Research contributions so far lack in addressing an optimal strategy for readjustment of uplink and downlink sub-frame boundaries; based on traffic statistics. In this paper, we introduce a mechanism that allows uplink sub-frame to grow, borrowing resources from the downlink sub-frame, if the uplink utilization is high and the downlink is being underutilized. We present here, a framework to dynamically demarcate the TDD frame-duration between uplink and downlink. Proposed algorithm takes into account the present utilization of downlink and reallocates a certain quantum of free resources to uplink. This occurs when uplink observes shortage of bandwidth to transmit. We simulate some test scenarios using OPNET Modeler with and without dynamic reallocation capability. The results of our simulation confirm the effectiveness of proposed algorithm which observes a remarkable decrease in end-to-end packet delay. Also, we observe an improvement in throughput at uplink such that, the performance of downlink remains unaffected.

A Design and Chronological Survey of Decision Feedback Equalizer for Single Carrier Transmission Compared with OFDM

Single Carrier Transmission (SCT) is a competing technique for Orthogonal Frequency Division Multiplexing (OFDM) in Broadband Wireless Systems (BWS). Recent developments in Frequency Domain Equalization (FDE) using Decision Feedback Equalization (DFE) have greatly improved the system based on the SC technique, this caused SC-DFE to be selected as a candidate technique for the forthcoming BWS. This paper concentrates the growth of DFE design from scratch till its present form used in SCT and thus restricts our survey to the development of DFE for SCT. A new SCT-DFE modified model is also presented and compared with OFDM, both simulated for WLAN system. This presented equalizer structure performs better than OFDM and improves its performance when the number of iterations is increased. SC-LE and SC-DFE both supersede the performance of OFDM.

A Framework to Achieve Reverse Channel Multicast in IEEE 802.16 Based Wireless Broadband Networks for Interoperability with IP Networks

The purpose of this paper is to present a framework design to achieve reverse channel multicast support in IEEE-802.16 networks. The unavailability of reverse channel multicast in IEEE 802.16 networks is one of the issues to be resolved in order to achieve its interoperability with IP networks. The interoperability of IEEE 802.16 networks and IP networks is not yet addressed. Forward channel multicast support is inherent in the IEEE-802.16 standard. Achieving reverse channel multicast support, we can enable IP services requiring native multicast support over IEEE-802.16 networks for seamless interoperation. IP network rudiments are mature enough and not likely to be redefined for any new network design; rather the reverse of this is more likely to be worked on. A framework design to achieve reverse channel multicast support is presented introducing a concentrator layer (Multi Node Access Layer) before Base Station (BS) and MARS (Multicast Address Resolution Server) to handle multicast requests.

Effects of Social Status on Foetal Growth Using Obstetric Ultrasonography – A Biometric Approach

The focus of this study is the analysis of biometric data related to the effects of the foetal growth based on the social status of vegetarian and non-vegetarian patients referred to clinicians. We have analyzed multiple biometric parameters such as age, socio-economic status, last menstrual period, and their associated biometric data. Out of thirty random patients, twelve patients were selected for investigation. Our results indicate that the growth rate of vegetarians is 56 grams/week, while for non-vegetarians it is 36 grams/week at the second and third trimester of the middle class patients.

Impact of Cluster Size on Efficient LUT-FPGA Architecture for Best Area and Delay Trade-Off

The delay of a circuit implemented in a Lookup table (LUT) based Field-Programmable Gate Arrays (FPGAs) is a combination of routing delays, and logic block delays. However most of an FPGA’s area is devoted to programmable routing. When these blocks are replaced with logic clusters, the fraction of delay due to the cluster has significant impact on total delay. This paper investigates the impact of logic cluster size when the most favorable LUT size is achieved. As a result, fast and area efficient FPGA architecture can be proposed that can combine the logic blocks into logic clusters. In lookup table FPGA architecture, area and delay are the main factors to be tackled, the best value for each of the parameters depends on complex trade-offs. If an FPGA with smaller LUTs is constructed to minimize the area, the result is poor speed. On the other hand, if an FPGA includes larger LUTs, speed might increase but area is unnecessarily wasted. In this experimental work 20 benchmark circuits were tested to calculate the delay and area metric. Results show increasing logic cluster size has no more effect on delay as well as area, when suitable optimal values of lookup table size (LUT) are established.