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41 results for “wireless communications”
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Research ArticleOpen accessIn the abstractHigh-Speed for Data Transmission in GSM Networks Based on Cognitive RadioAl Smadi Takialddin, Kalid Al Smadi, Orayb O. AL-SmadiThis paper mainly studies data transmission DT rate in the modern communication systems. Increasing the need to improve the sensitivity of the control systems to detect low signals weak capacity density in view of the increasing communications systems new radio that use the capacity is decreasing and the scope of the taking of spaciousness and frequencies are on the rise. … …American Journal of Engineering and Applied Sciences, Vol. 10, Issue 1 · 3 Feb 2017 · 9,083 accessesView PDFCite
Research ArticleOpen accessIn the abstractEnergy Efficiency Analysis of a TR-UWB SystemAdil El Abboubi, Fouzia Elbahhar, Marc Heddebaut et al.In wireless communications, where sensors operate on batteries, the energy consumption must be reduced while considering the communication range and data rate requirements. In this context we analyze and compare, in this study, the UWB and TR-UWB system in terms of the total energy consumption. So, for that, we develop an analytical model to estimate the energy consumption of a … …Journal of Computer Science, Vol. 12, Issue 1 · 15 Feb 2016 · 7,317 accessesView PDFCite
Research ArticleOpen accessIn the abstractSpectrum Switchover for Commercial use and "Spectrum Procurement" ContestAlexander RymanovMotivated by the need to implement wireless broadband mobile communications (Long Term Evolution (LTE)) in the "Digital Dividend" band (790-862 MHz) in Russia and to relocate government users of spectrum, especially the Aeronautical Radio Navigation Service (ARNS), this article focuses on the funding of organizational and technical measures to relocate government users from the spectrum and to transfer the spectrum … …American Journal of Applied Sciences, Vol. 11, Issue 11 · 10 Dec 2014 · 6,508 accessesView PDFCite
Research ArticleOpen accessIn the abstractEFFICIENT KEY MANAGEMENT AND AUTHENTICATION SCHEME FOR WIRELESS SENSOR NETWORKST. Lalitha, R. Saravana Kumar, R. HamsaveniWireless Sensor Networks (WSN) is vulnerable to node capture attacks in which an attacker can capture one or more sensor nodes and reveal all stored security information which enables him to compromise a part of the WSN communications. Due to large number of sensor nodes and lack of information about deployment and hardware capabilities of sensor node, key management in … …American Journal of Applied Sciences, Vol. 11, Issue 6 · 10 Apr 2014 · 6,981 accessesView PDFCite
Research ArticleOpen accessIn the abstractPERFORMANCE OF TRANSMISSION CONTROL PROTOCOL CONGESTIONCONTROL ALGORITHMS ON TELEDESIC SATELLITES CONSTELLATIONSM. Nirmala, Ramachandra V. PujeriSatellite networking is different from wired or wireless networks. TCP/IP performance and behavior with respect to normal wireless network and wired networks are different from one another. As the architecture of TCP/IP protocol was not designed to perform well over high-latency or noisy channels and so its performance over satellite networks are totally different. The properties of satellite constellations such … …Journal of Computer Science, Vol. 10, Issue 8 · 22 Feb 2014 · 7,043 accessesView PDFCite
Research ArticleOpen accessIn the abstractMOBILE COMMUNICATIONS FOR USING IN TELEMEDICINEMarjan Ghazi Saeedi, Mashaallah Torabi, Sakineh Hamidi, Hassan RanjiTelemedicine the use of telecommunication and information technologies in order to provide clinical health care at a distance helps eliminate distance barriers and can improve access to medical services that would often not be consistently available in distant rural communities. It is also used to save lives in critical care and emergency situations. Although there were distant precursors to telemedicine, … …Current Research in Medicine, Vol. 5, Issue 1 · 12 Feb 2014 · 9,985 accessesView PDFCite
Research ArticleOpen accessIn the abstractREDUCING TRANSMITTED POWER OF MOVING RELAY NODE IN LONG-TERM EVOLUTION-ADVANCED CELLULAR NETWORKSJaafar A. Aldhaibani, A. Yahya, R. B. Ahmad et al.Wireless multi-hop relay networks have become very significant technologies in mobile communications. These networks ensure data rate transfer and coverage extension with a low cost. In this study two types of relay are studied; Fixed Relay Node (FRN) and Moving Relay Node (MRN). Where system analyses for uplink and downlink transmission are derived in this study. Moreover the optimal relay … …Journal of Computer Science, Vol. 10, Issue 6 · 3 Feb 2014 · 6,737 accessesView PDFCite
Research ArticleOpen accessIn the abstractPERFORMANCE ANALYSIS OF HIGH EFFICIENCY LOW DENSITY PARITY-CHECK CODE DECODER FOR LOW POWER APPLICATIONSM. Revathy, R. SaravananIn this study, we propose a low power, high efficient Low Density Parity-Check Code (LDPC) Decoder Architecture for error detection and correction applications. LDPC codes have been adopted in latest wireless standards such as satellite and mobile communications since they possess superior error-detecting and correcting capabilities. As technology scales, memory devices become larger and more powerful and low power consumption … …American Journal of Applied Sciences, Vol. 11, Issue 4 · 30 Jan 2014 · 6,882 accessesView PDFCite
Research ArticleOpen accessIn the abstractAN APPLICATION SPECIFIC WINDOWS MANAGEMENT INSTRUMENTATION ARCHITECTURE FOR IMPROVING PERFORMANCE ON WIRELESS NETWORKLavanya Sankara Narayanan, Murali Baskaran VenugopalWireless Communications is one of the fastest growing segments in the communications industry. Wireless Network is the network that facilitates communication among two or more computers connected through the standard network protocols, without network cabling. Generally, the Wireless Network is termed as Wireless Local Area Networks (WLAN). A WLAN is a collection of network components connected by electromagnetic (radio) waves … …Journal of Computer Science, Vol. 10, Issue 3 · 28 Nov 2013 · 6,947 accessesView PDFCite