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With the recent developments in RFID systems, many readers are needed to apply to the same work place, which easily leads to the reader collision. When the communication with tags of a reader is disturbed by the operation of other readers, a reader collision will occur, which is achieved less attention than the tag collision in previous studies. To solve several types of reader collisions, we propose...
This paper considers a downlink wireless system where a multiple-antenna transmitter (Alice) aims to discriminate the reception performances between a legitimate receiver (Bob) and a set of unauthorized receivers (Eves). To this end, there has been great interest in the use of artificial noise (AN) together with transmit beamforming in order to effectively interfere Eves' reception. However, most...
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