The authors have been working on a multi-subcarrier multiple access method which enables unsynchronized stream data collection from battery-less and wireless sensor nodes leveraging the passive backscattering technology. The multi-subcarrier multiple access can be realized just by controlling an RF switch which is implemented in commercial RFID tags. As the compensation of low-cost and simply circuitry size to realize a multiple access, there are mutual interference among subcarriers. But the interference can be canceled by an interference rejection signal processing in the receiver. In this paper, the performance limitation of the interference rejection is evaluated experimentally in various signal to noise ratio with a prototype multi-subcarrier multiple access system. The result shows that the interference rejection method is effective up to the desired signal to interfering noise ratio is as worse as -16dB.
|Title of host publication
|2015 IEEE International Conference on RFID Technology and Applications, RFID-TA 2015
|Institute of Electrical and Electronics Engineers Inc.
|Number of pages
|Published - 2016 Jan 12
|IEEE International Conference on RFID Technology and Applications, RFID-TA 2015 - Tokyo, Japan
Duration: 2015 Sept 16 → 2015 Sept 18
|IEEE International Conference on RFID Technology and Applications, RFID-TA 2015
|15/9/16 → 15/9/18
- Multi-subcarrier multiple access
- Sensor RF tags
- Software Defined Radio
ASJC Scopus subject areas
- Computer Networks and Communications
- Electrical and Electronic Engineering