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682 articles for “Frequency”
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Research ArticleOpen accessEvery word in the titleNOVEL COLOR FILTER ARRAY DEMOSAICING IN FREQUENCY DOMAIN WITH SPATIAL REFINEMENTR. Niruban, T. Sree Renga Raja, T. Sree SharmilaThe main idea behind wavelet based demosaicing with spatial refinement is to reconstruct the full resolution color image from the mosaiced image. In this study, a new effective wavelet based demosaicing algorithm for interpolating the missing color components in Bayer’s Color Filter Array (CFA) pattern is proposed. This interpolation technique uses the interchannel correlation among the high frequency subbands to … …Journal of Computer Science, Vol. 10, Issue 8 · 9 Apr 2014 · 6,711 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleSMART TRAVELLING WITH RADIO FREQUENCY IDENTIFICATIONZainab Rasheed Fahad Mirza, Muhammad Nawaz BrohiRadio Frequency Identification (RFID) technology is being widely used now-a-days and is becoming more popular with every passing day. There are varied applications of this technology in various fields such as industry, communication, travel and transportation. Roads, rail ways, air traffic and container vessel shipping all share underlying abstractions of transportation nets with hubs. This study is concerned with applications … …Journal of Computer Science, Vol. 9, Issue 12 · 25 Nov 2013 · 7,165 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleAN IN-DEPTH ANALYSIS ON INTEGRATING CAMPUS RADIO FREQUENCY IDENTIFICATION SYSTEM ON CLOUDS FOR ENHANCING SECURITYZainabRasheed Mirza, Muhammad Nawaz BrohiSeveral measures had been taken to ameliorate security technology at campuses using latest technologies available. Radio Frequency Identification (RFID) technology in campuses is mainly used for recording attendance which is further extended to activity monitoring and individual security. This research paper proposes a framework of RFID integrated solution for enhanced campus IT security including human, campus IT asset traceability, student’s … …Journal of Computer Science, Vol. 9, Issue 12 · 25 Nov 2013 · 6,955 accessesView PDFCite
Research ArticleOpen accessEvery word in the titlePerformance Analysis of Discrete Wavelet Transform Based Multiple Input Multiple Output Orthogonal Frequency Division Multiplexing System for Different Wavelets in Different Channel EnvironmentHariprasadNagarajan, AlameluNachiappanMultiple Input Multiple Output (MIMO) and Orthogonal Frequency Division Multiplexing (OFDM) are the two assuring technologies that offers high data rate as required for the 4G wireless systems. Conventionally OFDM is Fast Fourier Transform (FFT) based system. It uses IFFT (Inverse FFT) blocks in the transmitter and FFT blocks in the receiver. OFDM combined with MIMO gives increased throughput and … …American Journal of Applied Sciences, Vol. 10, Issue 12 · 18 Oct 2013 · 6,624 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleANALYSIS AND SOLUTION FOR MULTI-BAND ORTHOGONAL FREQUENCY-DIVISION MULTIPLEXING ULTRA WIDE BAND SYSTEM IN REAL ENVIRONMENT FOR VEHICLE TO INFRASTRUCTURE APPLICATIONSanaa Kabil, Raja Elassali, Fouzia Elbahhar et al.Many researches in the world deal with driving on the road to ensure optimum safety. In this context, several telecommunication technologies are often used to connect the vehicles via continuous wireless communication with the infrastructure, exchange data and information relevant to increase overall road safety and enable cooperative traffic management. These systems are not reliable for all situations and the … …Journal of Computer Science, Vol. 9, Issue 10 · 5 Sep 2013 · 7,012 accessesView PDFCite
Research ArticleOpen accessEvery word in the titlePROTOTYPE DESIGN SYSTEM FOR MOBILE WEB USING RADIO FREQUENCY IDENTIFICATION AT PARKING BUILDINGDerwin Suhartono, Chitra Patricia, Hendry Steven, KevinSeveral factors cause people forget things. They are retrieval failure, interference failure to store and motivated forgetting. So, it is considered to have tools in order to prevent those. This happens almost everywhere, including when the drivers forgot where their car has been parked. Furthermore, the increase of parking fee is also considerable. The purpose of this research is to … …Journal of Computer Science, Vol. 9, Issue 9 · 6 Aug 2013 · 7,222 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleAgent and Radio Frequency Identification Based Architecture for Supermarket Information SystemHasan Al-SakranIn recent years the acceptance of Radio Frequency Identification (RFID) technology in business environments has been increasing rapidly due to its competitive business value. Adopting a suitable RFID-based information system has become increasingly important for supermarkets. However, most supermarkets still use conventional barcode-based systems to manage their information processes, which are consistently reported as one of the most unenthusiastic aspects … …Journal of Computer Science, Vol. 9, Issue 6 · 1 Jun 2013 · 6,746 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleFrequency Distribution of Hemoglobin Variants and Rhesus Blood Groups Among Pregnant WomenOyeyemi Ifeoluwa Temitayo, Salawu Oyetunde TimothyHemoglobin variants, ABO and Rhesus blood groups vary from one population to another. The study was designed to sample pregnant women population from Ayetoro community of Ogun state, Nigeria, for the purpose of updating information on the prevalence of abnormal hemoglobin variants, ABO and Rh blood groups and compare the results with previously published data. Hospital records of recruited pregnant … …Current Research in Medicine, Vol. 4, Issue 1 · 18 Apr 2013 · 8,010 accessesView PDFCite
Research ArticleOpen accessEvery word in the titlePeak to Average Power Ratio Reduction of Orthogonal Frequency Division Multiplexing System with a Significant Low ComplexityMahamod Ismail, J. S. Mandeep, Montadar Abas Taher, M. T. IslamThe Orthogonal Frequency Division Multiplexing (OFDM) has been widely used in many applications in the last decade. It provides good benefits compared to the single carrier systems. However, it has a bad property represented by the high-output Peak to Average Power Ratio (PAPR) which is considered as its major problem. There are many techniques to reduce the PAPR values such … …American Journal of Applied Sciences, Vol. 9, Issue 12 · 20 Dec 2012 · 6,594 accessesView PDFCite
Research ArticleOpen accessEvery word in the titlePeak-to-Average Power Ratio Reduction Using Active Constellation Extension-Projection Onto Convex Sets Combined with Particle Swarm Optimization Added to Space Time Bloc Coding in Multiple Input Multiple Output-Orthogonal Frequency Division Multiplexing SystemAhmed Ouqour, Abdelhamid Louliej, Younes Jabrane et al.When generated Orthogonal Frequency Division Multiplexing (OFDM) signal is transmitted through a number of antennas in order to achieve diversity or cap any gain (higher transmission rate) then it is known as Multiple Input Multiple Output (MIMO)-OFDM. The full form of MIMO is multi input and multi output where signals are transmitted via multiple antennas instead of only one antenna … …Journal of Computer Science, Vol. 8, Issue 12 · 12 Dec 2012 · 6,995 accessesView PDFCite