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An uplink scheduler in the Long Term Evolution (LTE) network has the objective to improve the radio resources utilization in the network. The choice of uplink scheduling procedure used impacts the throughputs of individual users, as well as the overall throughput of the cell. This paper evaluates and compares the performance of three well-known LTE uplink schedulers (namely, Maximum Throughput (MT),...
Recently, the idea of regularization received a lot of interest in signal processing with ill-conditioned problems. In this paper, instead of using the traditional sphere decoding (LSD) technique, regularized LSD detection techniques have been used for block data transmission systems (BDTS). The first regularization scheme that has been used is Tikhonov regularization (L2-regularization) which is...
As of today, image compression is still being enhanced bringing new mathematical methods in this interesting field aiming to reduce images' sizes as well as maintaining good level of their corresponding reconstructed images. In this paper, we present a new image compression technique based on polynomial interpolation. It is based on the interpolation of image pixels and converting them into polynomial...
In this paper we consider the link adaptation problem per Secondary User when adopting orthogonal frequency division multiplexing (OFDM)-based cognitive radio networks. The main issue herein is to provide a high Quality of Service (QoS) to SUs, while tolerating that the mutual interference between this latter and the primary user (PU) persists within a given range. To address this constrained problem,...
This paper reports on the averaging effect on prediction errors in the fast automated demand response (FastADR) power curtailment amount calculated by our autoregressive and neural network models for a large number of multi-type office building air-conditioners. Our experiments showed the standard deviation of prediction errors decreased with the number of FastADR trials according to the so-called...
In this paper we propose a multiagent framework for group multicriteria classification. We present in particular the classification of organizational knowledge problem. The idea is to identify knowledge that should be preserved and valorized in the organization. Our approach is based on a multiagent theory to represent classification actors by intelligent agents that communicate autonomously in order...
Multi-pulse pulse position modulation (MPPM) aims to improve the receiver bandwidth efficiency with respect to M-ary PPM. It is regarded as an attractive modulation scheme that can be utilized in both optical fibers and free-space optical (FSO) communication systems. In this paper, the error performance of MPPM optical communication systems over an ideal channel is studied, with consideration of the...
The enhancement of energy using solar photovoltaic in a limited area over domestic roof tops in urban areas is quite challenging. This paper focuses on the electrical energy production by photovoltaic cells having vertical placement for space reduction The developed tracking system is innovative and based on chronological sun tracking system which is based upon meteorological data collected average...
This paper develops a new approach of image restoration from multi periodic noises. It utilized the property of the conjugate symmetry in frequency domain to clean just a half-size of image band. First, the auto detection and recovery procedure was applied to remove or decrease the effect of the degradation from a whole frequency domain image by locating the spikes and replace them by zero. The procedure...
As an emerging technology, UltraWide Band (UWB) wireless communications provides a very different approach to the antenna technology compared to narrow band systems, which has been a very attractive choice for medical antenna development. In this paper presents the design and simulation of a hexagonal microstrip antenna along with a breast phantom simulation. The antenna is simulated by introducing...
The Routing Protocol for Low power and lossy network (RPL) is recommended by Internet Engineering Task force (IETF) for IPv6 based Low Power Personal Area Network (6LoWPAN). RPL is a proactive routing protocol for Internet of Things (IoT) that has applications in smart homes, smart cities and smart world. RPL creates a Directed Acyclic Graph (DAG) of the network topology. Rank in a primitive construct...
In this paper we present the details of a novel fatigue sensor designed to monitor health status of mission critical mechanical systems. The designed fatigue sensor is unique in the respect that it senses fatigue related degradation before the actual catastrophic failure happens and gives ample time for replacement of the fatigued part. The electronics of the sensor is wireless enabled and can be...
One of the main considerations in designing routing protocols for Mobile Ad-Hoc Network (MANET) is to increase network lifetime by minimizing nodes' energy consumption, since nodes are typically battery powered. Many proposals have been addressed to this problem; however, few papers consider a proactive protocol like Optimized Link State Routing Protocol (OLSR) to better manage the energy consumption...
Learning ecosystem is a coherent set of training biocenes that promotes collaborative learning and allows exchanging and sharing of knowledge and/or skills for succeeding in a common project. Learning ecosystems have changed the learning mode. Nowadays, the customers (the learners in our case) teach us what they want, hence, training can become the pilot of this change. The collaborative environment...
Recently, Automatic Number Plate Recognition (ANPR) systems have become widely used in safety, security, and commercial aspects. The whole ANPR system is based on three main stages: Number Plate Localization (NPL), Character Segmentation (CS), and Optical Character Recognition (OCR). In recent years, to provide better recognition rate, High Definition (HD) cameras have started to be used. However,...
Frequency converters are used to control electric motors in many kinds of industrial applications. Since they control the electric motors that run the machines or processes, they must be strongly integrated with the rest of the automation system. If the wireless sensor and actuator networks are used as a part of the same automation system, it would be beneficial to have a direct connection between...
Museums, castles, and aquariums are some of the many tourist sites visited once exploring a new place. However, visiting a tourist site without the aid of a tourist guide; some would feel lost and confused. In this work, we introduce the implementation of a tour-guide robot using Kinect technology to ease the process of tourist guides. The robot will replace the current human guide. The robot will...
Low power and lossy networks (LLNs) consist of devices having limited battery power, less memory, reduced processing capability. RPL (Routing Protocol for low power and Lossy networks), is an approved Internet Engineering Task Force (IETF) standard routing protocol for IPv6-based LLNs. RPL uses a proactive routing approach and the sink or controller node within the network creates a Directed Acyclic...
Damping low frequency oscillations of power systems is one of the most important determinants of system stability. Due to the increasing growth of wind farms with high penetration levels in power systems as well as their participation and control, it seems important to increase the damping system oscillations. In this paper, doubly fed induction generators (DFIGs) were used for damping the power oscillations...
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