Rommel García

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Many systems exist (TOA, AOA, RSSI) that can be used with diverse technologies (ultrasounds, infrared, Bluetooth, 802,11...) for indoor location. In this article we choose to apply TOA on a ZigBee network, to be able to add useful functionalities for other applications in an existing network and, in addition, achieve minimum consumption and low cost. The(More)
This work reports an efficient and compact FPGA processor for the SHA-256 algorithm. The novel processor architecture is based on a customdatapath that exploits the reusing ofmodules, having as main component a 4-input Arithmetic-Logic Unit not previously reported. This ALU is designed as a result of studying the type of operations in the SHA algorithm,(More)
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