Simulation on probabilistic anti collision protocols of RFID using variable delay

In RFID System, it is important to avoid tag collision for identifying tag faster. In this paper, we proposed concept of variable delay for tag estimation & identification. The scheme is based on the Multi-level dynamic framed ALOHA protocol. Simulation results indicate that the time delay is added to each tag for avoiding collision. The main advantage of this is the delay is in microseconds which will not create problem of more time consumption

Universal Product Code (Barcode) and Retailing Performance of Supermarkets in Nigeria

This study examined the relationship between Universal Product Code and Retailing Performance of Supermarkets in Nigeria. The specific objectives of the study were to investigate the influence of bar code formatting and bar code encoding on retailing performance. The study adopted the cross sectional research study. The choice of this approach is because it will scientifically examine the situation on ground and empirically analyze it to get result that can be generalized on the accessible population. Based on the research questions, a research questionnaire was designed and one hundred (100) copies were distributed to the sample population which was determined by convenient sampling techniques. After data cleaning, a total of ninety two (92) copies of the distributed questionnaire were retrieved. These copies were analyzed and the hypotheses were tested using the Pearson’s Product Moment Correlation Coefficient with the aid of SPSS Version 22.0. The result revealed that; there is a significant relationship between bar code formatting and sales volume, bar code formatting and profitability, bar code encoding and sales volume, bar code encoding and profitability. The study recommends that Supermarkets should endeavour to update regularly, their products barcode fields to ensure that their wide range of products are always captured and enlisted in the field to ease up the purchase and sales activities of the supermarkets; Regular training exercise should be organized to educate the staff of the supermarkets on how to manage the barcode fields and to efficiently handle issues relating to formatting and encoding of the barcode fields. Keywords: Universal, Product, Code, Retailing, Performance, Barcode Formatting, Barcode Encoding, Sales Volume and Profitability. DOI: 10.7176/EJBM/12-29-03 Publication date:October 31st 202

Internal Antenna for UHF-band Mobile RFID System

UHF-band radio frequency identification (RFID) antenna for mobile handset applications is presented. The proposed antenna consists of a radiating element and a parasitic element connected to the ground plane. The radiation pattern of proposed antenna is orthogonal to that of a monopole antenna. The impedance bandwidth (902 MHz ~ 923 MHz) covers a Korea mobile RFID service (908.55 MHz ~ 913.95 MHz). The measured antenna peak gain is -0.37 dBi at 911 MHz

Merged Search Algorithms for Radio Frequency Identification Anticollision

Nowadays, the Radio Frequency Identification (RFID) system enables the control of many devices over an open communication infrastructure ranging from a small home area network to the global Internet. Moreover, a variety of consumer products are tagged with remotely low-cost readable identification electromagnetic tags to replace Bar Codes. Applications such as automatic object tracking, inventory and supply chain management, and Web appliances were adopted for years in many companies. The arbitration algorithm for RFID system is used to arbitrate all the tags to avoid the collision problem with the existence of multiple tags in the interrogation field of a transponder. A splitting algorithm which is called Binary Search Tree (BST) is well known for multitags arbitration. In the current study, a splitting-based schema called Merged Search Tree is proposed to capture identification codes correctly for anticollision. Performance of the proposed algorithm is compared with the original BST according to time and power consumed during the arbitration process. The results show that the proposed model can reduce searching time and power consumed to achieve a better performance arbitration

A Study on Comparing the Performance of Low Cost RFID Authentication Protocols

Abstract ----Radio frequency identification (RFID) is a new technology that is used everywhere as RFID tags will be applied to every-day items in order to yield great productivity gains or "smart" applications for users. The use of RFID tags opens up the possibility for various attacks violating user privacy. This paper describes a complete analysis of various authentication protocols in three perspectives, namely data protection, tracking protection, and forward security