April 2016
Intermediate to advanced
715 pages
26h 17m
English
Content preview from Handbook on Mobile and Ubiquitous Computing
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Handbook on Mobile and Ubiquitous Computing: Status and Perspective
4.6 Implementation
Figure 4.8 shows a picture of our prototyped system. We implemented our baseband modem
logic on the ARM-based Excalibur FPGA [28], ultrahigh frequency (UHF) RF circuits with filters,
direct conversion up/down mixers, PLL, PA, and palm-sized antennas. The RFID firmware is
running on the ARM9 processor on the Excalibur, and embodied baseband modem APIs control
forward/return link frequencies, transmitting/receiving bit streams, PLL, TX/RX gains, and turning
on/off each RF part. The firmware has functions of inventory using anticollision algorithms, and
also has read/write ...
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