Transmit power sweeping in radio frequency identification (RFID) tags

Abstract

Systems and techniques are described for wireless communications. For example, a computing device can transmit, to a plurality of first passive devices located at a first range from the computing device, a first signal with a first transmit power and a first duty cycle. The first transmit power is dependent upon the first range. The computing device can transmit, to a plurality of second passive devices located at a second range (which is less than the second range) from the computing device, a second signal with a second transmit power and a second duty cycle. The second transmit power is dependent upon the second range. The first transmit power is less than the second transmit power, and wherein the first duty cycle is greater than the second duty cycle.

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