Papers by Keyword: TAG

Abstract: A microstrip patch antenna for RFID reader is presented in this paper. It operates within the RFID international UHF band (902-928MHz) which the center frequency is at 915MHz with 15dB of return loss value. The frequency ranges also cover the RFID UHF band for Malaysia (912-923MHz). The main objective for this antenna is to implement it in the RFID reader for an auto payment application. Some results have been shown between CST Microwave Studio, HFSS and the measurement. Good agreement is achieved for the used in the RFID UHF band.

Abstract: For tag anti-collision algorithm in the current RFID system, considering the problems of tag privacy leakage and tag being tracked, a security solution based on Hash function was put forward. A theoretical analysis and a security evaluation about the proposed solution are also made. Through the analysis and evaluation, it turns out that this solution can prevent tag from privacy leaking, being tracked, cloning and counterfeit.

Abstract: Currently collaborative filtering is widely used in e-commerce, digital libraries and other areas of personalized recommendation service system. Nearest-neighbor algorithm is the earliest proposed and the main collaborative filtering recommendation algorithm, but the data sparsity and cold-start problems seriously affect the recommendation quality. To solve these problems, A collaborative filtering recommendation algorithm based on users' social relationships is proposed. 0n the basis of traditional filtering recommendation technology, it combines with the interested objects of user's social relationship and takes the advantage of the tags to projects marked by users and their interested objects to improve the methods of recommendation. The experimental results of MAE ((Mean Absolute Error)) verify that this method can get better quality of recommendation.

Abstract: The article proposed a new research. The method may avoid interference of reverse drive vehicle by installing back-to-back reader in section, adopting active electronic tags to expand the scope and accuracy about reading and writing, using the information including the number of electronic tags in scanning section, update ratio, residence time to build the linkage system between control system and vehicle-mounted electronic tags, and cooperating with the signal condition in intersection, to make the discrimination of traffic state, especially the discrimination of congestion state. The method could identify the traffic state effectively, which was verified by simulated experiment through secondary development of VISSIM.

Abstract: Collaborative Filtering (CF) is one of the most popular techniques used in recommendation systems. User-based CF uses rating data to calculate similarity between users and is effective in traditional recommendation systems. However, it does not work well when applied in tag recommendation systems as there are tags with same semantics which does not match literally. Based on tag concept category, the improvement of traditional CF is achieved by compressing the dataset, analyzing the users preference and extracting the tags objective characteristics. The result of experiment shows the more satisfied accuracy than the traditional one does.

Abstract: As the development radio frequency identification, main researches are mainly focused on the information safety of the air interface, the communication protocol between the tag and the reader. If the air interface is not security, the information cannot be protected, bringing a serious threat to the system security. Although the physical based method can solve this problem in a certain extent, communication safety still cannot be satisfied. Therefore, in order to improve the information safety, this paper introduces a new method about how the tag and the reader authenticate each other. Experimental results show that the proposed method can improve the information security in the authentication process between the tag and the reader on the radio frequency identification system.

Abstract: To address the security problems caused by the fake readers, and the weakness of low authentication protocol efficiency, a new RFID security authentication protocol based on Hash function is proposed. The security ability of the protocol is compared with other protocols' and is proved by doing the formal analysis. The theoretical analysis and formal proof is presented to prove the security ability of the protocol. Consequently, the result showed that the new protocol could protect the data privacy, achieve the data synchronization, prevent the tag from location tracking, avoid information reproduction, prevent clone and counterfeit and possess forward security ability which was useful for low-cost tags.

Abstract: To solve inconsistency problems of Power Quality Data Interchange Format (PQDIF) file, a novel detection method is studied. According to different provincial PQDIF specifications in China, the current application status of PQDIF file is introduced. The inconsistency problems arising in the practical applications are analyzed based on the analysis of PQDIF standard structure. By parsing the tag combinations in data source of PQDIF file, the key tag groups will be obtained. Then by matching the groups with the specification, the consistency test of PQDIF file can be achieved. Finally, the result of data programming shows that the proposed method is valid and practical.

Abstract: To improve the read performance of RFID tags,improve the quality factor is very important. Firstly,from theory and practical, confirmed that quality factor Q is very important for RFID tags,a higher Q means the tag could have a good performance. Then,through calculations and simulation,analysis the influence factors of Q. With simulation figures show that length, width, space, thickness of the tags coil all affect the Q,but when manufacturing of tags , the control of manufacturing quality and accuracy is very difficultly. Finally, shows many figures about tags manufacturing quality and accuracy of manufacturing which have lower Q and badly read performance.

Abstract: With the gradual application of RFID technology, the problems of privacy security arouse people's great attention. To address the problems of the existing RFID authentication protocol, such as the weakness on security and privacy, the high cost and the un-stabilizing systems performance, this paper puts forward a kind effective protection of privacy and low cost RFID security authentication protocol, analyses the security and performance of this protocol. This protocol can not only effectively solve the problems of replay attacks, location privacy attack and data synchronization, but also greatly use the Reader computing resources to reduce the cost of system construction, so it is appropriate for the application of RFID system.