98 results for “wireless access”

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Research ArticleOpen accessIn the abstractIndoor Characterisation using High-Resolution Signal Processing Based on Five-Port Techniques for Signal Input Multiple Output SystemsSmari Mouheddin, Bel hadj Taher JamelProblem statement: The development of wideband mobile communication systems requires a deep knowledge of the characteristics of the indoor mobile radio channel. The characterization of the indoor multi-path propagation structure is important in developing antifading techniques for high-speed digital radio access. The high-resolution of the estimation of the Time of Arrival (ToA) and the Direction of Arrival (DoA) of multi-path … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 2 · 30 Jun 2009 · 7,684 accessesView PDF Cite

Research ArticleOpen accessIn the abstractDirect Sequence and Frequency Hopping Signals Classification Based on Co-Occurrence Matrix and Clustering TechniquesHaidy S. Fouad, Hend A. Elsayed, Shawkat K. GirgisSpread Spectrum techniques (SS) were first developed for military applications, but currently, they have commercial applications. SS provides secure communication and allows multiple accesses for same radio spectrum. So, most Wireless Local Area Network (WLAN) systems use it, as do Cognitive Radios (CR), space systems and Global Positioning Systems (GPS). Direct Sequence Spread Spectrum (DSSS) and frequency hopped spread spectrum … …Journal of Computer Science, Vol. 15, Issue 1 · 10 Jan 2019 · 8,203 accessesView PDF Cite

Research ArticleOpen accessIn the abstractA Performance Study of Reactive Multicast Routing Protocols in Virtual Class Room Using Mobile Ad Hoc NetworkS. Vijayaragavan, K. Duraiswamy, B. Kalaavathi, S. MadhaviProblem statement: A great deal of excitement has recently propelled Mobile Learning to the forefront of educational technology. The exponential growth of mobile technology in the recent years, increase in the availability of high-bandwidth network, advances in wireless technologies and popularity of handheld devices, have opened up new accessibility opportunities for education. Approach: Virtual class room using MANET had been … …Journal of Computer Science, Vol. 5, Issue 11 · 30 Nov 2009 · 6,875 accessesView PDF Cite

Research ArticleOpen accessAll words, across the recordCLUSTER BASED CACHE CONSISTENCY USING AGENT TECHNIQUE IN MOBILE ENVIRONMENTShanmugarathinam Ganesarathinam, Vivekanandan KanniappanCaching is an essential mechanism in mobile environment. Mobile node makes access dynamic changing data object to their server and to get the interested data to keep their own as local copies in the cache. If the server database is updated, the data cached in mobile client is invalidated and it becomes inconsistent between client and server. In this study … …Journal of Computer Science, Vol. 10, Issue 4 · 19 Dec 2013 · 6,487 accessesView PDF Cite

Research ArticleOpen accessAll words, across the recordPAPR Reduction Using BPSO/PTS and STBC in MIMO OFDM SystemKarima El Mouhib, Ahmed Oquour, Younes Jabrane et al.Problem statement: The Multiple Input Multiple Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) system has been receiving a great attention, as one of solutions for achieving high speed, efficient and high-quality service for the wireless communications. However, the transmitted signal still has high PAPR because of OFDM characteristics. Many methods have been proposed to solve this problem, but the most … …Journal of Computer Science, Vol. 7, Issue 4 · 4 Apr 2011 · 7,189 accessesView PDF Cite

Research ArticleOpen accessAll words, across the recordICT based Sustainable Rural Business Opportunities in Developing Countries: A Wireless-Networked RCP-RAP ApproachMd. Abdur Rahman, Mohammad Upal Mahfuz, Kazi M. Ahmed, R. M.A.P. RajathevaInformation and Communication Technology (ICT) is gaining much research attention in present times especially for its ability towards poverty alleviation. In this study the prospect of rural business opportunities in developing countries more specifically in the target country, Bangladesh, has been investigated from the viewpoint of wirelessly networked Rural Communication Point (RCP) approach. It is proposed that if only one … …American Journal of Applied Sciences, Vol. 2, Issue 8 · 31 Aug 2005 · 7,080 accessesView PDF Cite

Research ArticleOpen accessAll words, across the recordScheme for ISDN/DECT Wireless Internetworking and VerificationMaher Dababneh, Ibrahim QatawnehA novel scheme to access the basic rate service of the Integrated Service Digital Network (ISDN) using the Digital Enhanced Cordless Telephone (DECT) radio interface standard is presented. The S-interface in the ISDN reference configuration has been used for the ISDN interface and the unprotected class 0 transmissions are used for the DECT interface. The design of a state of … …American Journal of Applied Sciences, Vol. 2, Issue 4 · 30 Apr 2005 · 7,205 accessesView PDF Cite

Research ArticleOpen accessAll words, across the recordBluetooth Wireless Monitoring, Managing and Control for Inter Vehicle in Vehicular Ad-Hoc NetworksHelia Mamdouhi, Sabira Khatun, Javad ZarrinProblem statement: The car users expect more and more accessories available in their cars, but the accessories available needed manage by driver manually and not properly manage by smart system. All these accessories are able to control by user manually using different and standalone controllers. Besides, the controller itself uses RF technology which is not existed in mobile devices. So … …Journal of Computer Science, Vol. 5, Issue 12 · 31 Dec 2009 · 8,978 accessesView PDF Cite