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This paper proposes a novel hybrid CDMA-IDMA collision arbitration protocol for mobile RFID system. The aims of the proposed protocol are: (1) to prevent collisions among mobile readers; and (2) to avoid collisions for active tags. In the proposed protocol, In reader-to-tag downlink communication, we use CDMA technique to identify reader network; in tag-to-reader uplink communication, we use interleaver...
One of the main problems which lower the efficiency of passive UHF RFID system is the collision between the tags. Current solutions are based on collision avoidance using MAC Layer Protocols (e.g. FSA, BT algorithms), these can be time consuming process because they discard the signals of Physical Layer and then require signal retransmission. It's therefore an issue of great importance to develop...
In recent year, RFID automatic identification has become very popular in many service industries, manufacturing companies and material flow systems. One of the challenges in designing modern RFID systems is that when more than one tag exists in an RFID environment, it may occurs collisions so that the whole system becomes inefficient and increases the time for identifying RFID tags. In order to simultaneously...
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