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High throughput SDR networking waveforms require fast convergence Automatic Gain Control algorithms due to frequent transmissions in short time slots. In this paper, we propose a novel algorithm for feed-forward AGC with fast convergence and reduced computational complexity. Firstly, the RF front end of Software Defined Radio (SDR) is characterized through the use of vector signal generator. An RF...
This paper presents a framework for the undergraduate research experience that Electrical and Computer Engineering (ECE) Senior Undergraduate students at Khalifa University, UAE pursue through a fourth-year technical elective course entitled Independent Study that is one-semester long. This course is an excellent example of self-directed learning as one of the most influential educational experiences...
In this paper, a uniform circular antenna array(UCAA) combining genetic algorithm (GA) for finding out global maximum of multi-objective function in indoor ultra-wideband (UWB) communication system is proposed. The algorithm is used to synthesize the radiation pattern of the directional UCAA to reduce the bit error rate (BER), to increase received energy and channel capacity in indoor UWB communication...
The quadcopter technology has been developed for many years. It has the advantages of light weight, small size, high mobility and autonomy. At present, it is already a proven technology, especially in outdoor environments. As the Global Positioning System (GPS) can provide accurate geographic coordinates for quadcopters, this endows the drones with certain abilities, such as loiter and waypoint navigation...
In this work, the design and realization of a wireless lithium-ion battery management system (BMS) was accomplished. This system is composed of feedback circuits, a microcontroller, pulse-width modulated (PWM) boost circuits, a boost/buck converter, a wireless monitoring system, and a Boston Sonata 4400 battery. The microcontroller could automatically regulate the PWM signal to change the charging...
In a Wireless Sensor Network (WSN) Nodes are distributed to monitor an area of interest such as a military battlefield, and transmit their data to in-situ Base-Station (BS) through multi-hop paths. In addition to collecting and processing the sensor data, the BS performs network management tasks. Due to such an important role, an adversary would try to locate the BS and target it with Denial-of-Service...
This paper considers multi-way communications among three users equipped with multiple-input multiple-output (MIMO) transceivers that exchange massages between each other via two amplify-and-forward (AF) co-located relays. In this network with half-duplex MIMO relays, the wireless medium is simultaneously utilized for time-slotted transmissions by one of the users and one of the relays in order to...
In this paper, we present a new carpooling recommendation system whose main objective is to find the best carpool matchings and recommend individuals to join their friends during trips or travels. The proposed recommendation system utilizes user's mobility history and user social network information to find carpool matchings. The proposed system employs a probabilistic model based on continuous time...
The emphasis of this paper is put on 5G multi-cell networks which are composed of dense and mutually interfering evolved NodeBs (eNBs) sharing the scarce radio resources. Consequently, greater focus is given to resource management techniques that take Inter-Cell Interference (ICI) into account, in particular to power control. Beside power control, this paper tackles also user association and scheduling...
The problem of the centralized caching is studied in a two-layer network. The first layer of the network is constructed by a server and K1 helpers, and the second layer consists of K1 orthogonal sub-networks, each of which contains a helper and K2 users. The pioneer caching design in the two-layer network is to directly apply the Maddah-Ali & Niesen (MAU) centralized caching [1] into individual...
Opportunistic Networks have been designed for transmitting data in difficult environments, characterized by high mobility, sporadic connectivity, and constrained resources. To sustain these networks, the literature describes methods such as Epidemic and Spray&Wait, which do not learn from the network behaviour, and Gossiping-based algorithms that collect historical network data to improve efficiency...
In Content Delivery Networks (CDNs), knowing the popularity of video content helps the manager to take efficient decisions about which video content should be cached near the end users and also about the duplication degree of each video to satisfy the end user Quality of Experience. This paper focuses on predicting the popularity of video content, in terms of the number of requests. For that purpose,...
In Agriculture, farming is an important process to provide us foods. The production of farming is increasing due to the world population increased. Scientists and Engineers are working on it in order to increase the productions and reduce the time required. Hence, planting and harvest technologies are improved significantly. However, the farming delivering process also is a very important process...
The Internet of Things (IoT) is the network of objects such as vehicles, mobile devices, and buildings with electronic components, software, and network connectivity, which enable these objects to collect data, to run commands, and to be controlled through the Internet. Controlling physical items from the Internet will increase efficiency and save time. The growing number of devices used by people...
Ultra Wideband Real-Time Location System (UWB RTLS) is a real-time positioning system with high precision, which contains a number of positioning tags and anchors, and the collision between multi tags is the main reason that affects the communication efficiency and positioning accuracy in UWB RTLS. The ALOHA algorithm and the binary tree algorithm are the mainstream of the anti-collision algorithm...
Compared with other positioning technologies, UWB positioning technology has the absolute advantages in the accuracy, the real-time performance and the wide-band. It can achieve the positioning accuracy of centimeter level. The maturity of wireless clock synchronization algorithm, TDOA (Time Difference of Arrival) positioning algorithm and the multi tags access provides a good foundation for UWB positioning...
Wireless Sensor Networks need energy efficient protocols for communication and data fusion to consolidate data and prolong the lifetime of the network. In this paper, an adaptive hierarchical clustering and routing method has been proposed. This clustering and routing method is based on maximum bottleneck energy routing (MBER) from a node to the sink. This method favors the routes with the highest...
Tracking movement of mobile nodes has received significant scientific and commercial interest, but long term tracking of resource-constrained mobile nodes remains challenging due to the high energy consumption of satellite receivers. Cooperative position tracking has been proposed for energy efficiency, however, all the cooperative schemes use opportunistic cooperation and optimize for either energy...
The discrete memoryless Z-Channel (DM-ZC) with a confidential cross-message is considered. Three messages are transmitted; encoder 1 transmits one message to be decoded by decoder 1. Encoder 2 transmits two messages, the first of them is to be decoded by decoder 2; the second message is to be decoded by decoder 1 and is required to be kept secret from decoder 2. The secrecy level is measured by the...
Maintaining both reliable and secret communication involves different objectives: ensuring sufficient throughput for reliable communication and ensuring the secrecy of the associated communication. The optimal solution for one of these objectives might not be optimal or even suitable for another objective and thus a question arises as to what is the appropriate criteria for fairly balancing these...
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