Synchronous Dynamic Adjusting: An Anti-Collision Algorithm for an RF-UCard System

Synchronous Dynamic Adjusting: An Anti-Collision Algorithm for an RF-UCard System

An RF-UCard system is a contactless smartcard system with multiple chip operating systems and multiple applications. A multi-card collision occurs when more than one card within the reader’s read field and thus lowers the efficiency of the system. This paper presents a novel and enhanced algorithm to solve the multi-card collision problems in an RF-UCard system. The algorithm was originally ins...

An efficient Anti-Collision Algorithm for RFID System

-Radio frequency identification (RFID) is an automatic identification system working through radio frequency (RF). Tag collision occurs while two or more than two tags deliver their unique identification (UID) to the reader. Since collision, which would significantly affect the efficacy of RFID, has been one of the major study issues for RFID technology, we have developed a solution, bit compet...

An Enhanced Dynamic Framed Slotted ALOHA Anti-collision Algorithm

In RFID system, one of the problems that we must solve is the collision between tags that may occur when a reader attempts to read a number of tags simultaneously. Most of the popular anti-collision algorithms are based on the ALOHA-type algorithm, which are simple and show good performance when the number of tags to read is small. However, for ALOHA-type algorithms the time required to read th...

An Automatic Real Time Impedance Matching System for Use in an RF Electrostatics Accelerator Ion Source

An Improved Query Tree Anti-Collision Algorithm Using Collision Location

In order to reduce the identification delay and the energy consumption of the Query Tree Anti-collision Algorithm, the disadvantage of the current query tree anti-collision algorithms is analyzed and an improved query tree anti-collision algorithm is proposed, which is called collision Location based Hybrid Query Tree (LHQT) algorithm. In the algorithm, Manchester code is used and collision loc...