Sign inSubmit
Tips: “quotes” for a phrase · author:Lee · a DOI goes straight to its article

113 articles for “Wireless Systems”
Set a search alert
Research ArticleOpen accessPhrase in the titleHIGH IMPEDANCE SURFACES FOR FLEXIBLE AND CONFORMAL WIRELESS SYSTEMSHaider R. Khaleel, Hussain M. Al-Rizzo, Ayman Issac, Said AbushamlehRecent years have witnessed a great deal of interest from both scientific and academic communities in the field of flexible electronic systems. Most flexible electronic systems require the integration of flexible antennas operating in specific frequency bands to provide wireless connectivity which is highly demanded by today’s network oriented society. On the other hand, High Impedance Surfaces have become very … …American Journal of Engineering and Applied Sciences, Vol. 7, Issue 2 · 26 Jun 2014 · 7,218 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleAn Efficient Course Resolution Multiple-Receiver Approach for Reception of Slow Fading Signals in Digital Wireless Communication SystemsAshraf Mamdouh Aziz, Senior Member, IEEE et al.Multiple-receiver digital wireless communication systems employ several receivers and a digital central receiver with data fusion to reduce the effect of multipath fading problems. The multiple receiver observations are processed at individual receivers and sent to a digital central receiver. The digital central receiver fuses all the individual receiver data to form global data on which symbol was transmitted. In … …American Journal of Applied Sciences, Vol. 12, Issue 8 · 7 Sep 2015 · 6,509 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleInverse Sine Phase Detector Phase Locked Loop Associated with Modified Multi Band LC Quadrature Voltage Controlled Oscillator for Wireless Communication Systems at 0.9, 1.8, 2.4, 3.5 GHzMahmoud AbdellaouiProblem statement: In this study and in consequence of the restricted performance of the multi standard wireless receiver utilizing the classical architectures, we proposed and presented a new architecture of multi band wireless receiver based on an Inverse Sine Phase Detector Phase Locked Loop (ISPDPLL) associated with modified multi band LC quadrature Voltage Controlled Oscillator (VCO), supporting GSM/DCS/DECT/Bluetooth/WiMax systems. Approach: … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 2 · 30 Jun 2009 · 8,251 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleA Dynamic Resource Synchronizer Mutual Exclusion Algorithm for Wired/Wireless Distributed SystemsAhmed Sharieh, Mariam Itriq, Wafa DbabatA mobile host has small memory, relatively slow processor, low power batteries, and communicate over low bandwidth wireless communication links. Existing mutual exclusion algorithms for distributed systems are not enough for mobile systems because of several limitations. In this study, a mutual exclusion algorithm that is more suitable for mobile computer systems is developed. The algorithm tends to minimize the … …American Journal of Applied Sciences, Vol. 5, Issue 7 · 31 Jul 2008 · 7,161 accessesView PDFCite
Research ArticleOpen accessEvery word in the titlePolicy-Based Security for Wireless Components in High Assurance Computer SystemsLuay A. Wahsheh, Jim Alves-FossTo enable the growth of wireless networks in high assurance computer systems, it is essential to establish a security engineering methodology that provides system security managers with a procedural engineering process to develop computer security policies. Our research demonstrates how wireless communication technology is deployed using the Multiple Independent Levels of Security (MILS) architecture for high assurance computer system design … …Journal of Computer Science, Vol. 3, Issue 9 · 30 Sep 2007 · 7,329 accessesView PDFCite
Research ArticleOpen accessIn the keywordsEnvironmental Monitoring for Cultivated Lands: Designing and Implementing IoT based Complete Prototype ModelAnar A. Hady, Basma M. Mohammad El-Basioni, Sherine M. Abd El-KaderPrecision Agriculture is recently being introduced to production as the technique of using the precise amounts of agricultural essentials like water, fertilizers, and pesticides whenever needed without harming the environment, land, and crops by excess application. Various techniques are used for precision agriculture and with the advent of Wireless Sensor Networks, it has been a strong candidate in this field … …Journal of Computer Science, Vol. 18, Issue 5 · 25 May 2022 · 5,956 accessesView PDFCite
Research ArticleOpen accessIn the keywordsWeighted Centroid Correction Localization in Cellular SystemsRong-Zheng Li, Xin-Long Luo, Jia-Ru LinProblem statement: There is a large demand for wireless Location-Based Service (LBS) and it is provided by many wireless cellular systems. In process of positioning a Mobile Station (MS), the computing speed is as important as the positioning accuracy and the algorithm should also be resistant to environmental influences. Approach: A new positioning method based on Weighted Centroid Correction Localization … …American Journal of Engineering and Applied Sciences, Vol. 4, Issue 1 · 27 Jan 2011 · 8,974 accessesView PDFCite
Research ArticleOpen accessIn the keywordsA Survey of Intrusion Detection Schemes in Wireless Sensor NetworksMurad A. Rassam, M. A. Maarof, Anazida ZainalWireless Sensor Networks (WSNs) are currently used in many application areas including military applications, health related applications, control and tracking applications and environment and habitat monitoring applications. The harsh and unattended deployment of these networks along with their resource restrictions makes their security issue very important. Prevention-based security approaches like cryptography, authentication and key management have been used to protect … …American Journal of Applied Sciences, Vol. 9, Issue 10 · 17 Aug 2012 · 8,733 accessesView PDFCite
Research ArticleOpen accessIn the keywordsA Novel Routing Protocol with High Energy Performance in Mobile Special NetworksAli Norouzi, B. Berk UstundagProblem statement: Mobile Special Networks do not have a predetermined structure. This type of networks can dynamically reorganize network connection relationships due to change of neighborhoods and the relative positions. Approach: There are many problems in creation of a special network such as routing, wireless media, energy consumption and transportability. Results: Although these networks primarily had been formed for small … …Journal of Computer Science, Vol. 7, Issue 1 · 15 Jan 2011 · 7,304 accessesView PDFCite
Research ArticleOpen accessIn the keywordsA Novel µ-Negative Metamaterial With Enhanced Rejection BandwidthHaider Raad, Hussain Al-Rizzo, Ayman Abbosh, Said AbushamlehIn this study, a novel planar µ-Negative (MNG) metamaterial structure based on Split Ring Resonators (SRRs) with improved rejection bandwidth is presented. A bridging technique is used to connect two SRR unit cells at the center to emulate a cascaded filter. The proposed structure achieved a -20 dB rejection bandwidth of 15.5% compared to 4.5% for the conventional SRRs which … …American Journal of Engineering and Applied Sciences, Vol. 6, Issue 2 · 3 Apr 2013 · 7,372 accessesView PDFCite