Flux Research Group / School of Computing

Demo: A Compliance Monitoring System for Open SDR Platforms

Jie Wang, Jacobus (Kobus) Van der Merwe, and Neal Patwari

ACM Conference on Embedded Networked Sensor Systems (SenSys) 2021.

areas
Testbeds, Mobile Networking

abstract

Next-generation wireless experimentation benefits from new large-scale open-access software defined radio (SDR) platforms. Each SDR’s transmissions must be measured and monitored to guarantee spectrum compliance. The measured spectrum is, however, corrupted by external co-channel signals. This demo presents the Bidirectional Incident/Transmit Signal Separator (BITSS), a system which estimates the linear system model, the SDR’s transmit signal, and the signals from other sources incident to the antenna, all on the fly and without a signal prior or system information. We implement and run BITSS on POWDER and evaluate its performance. The demo shows that BITSS enables separation over a range of signal parameters with high accuracy and alerts users and the operator whenever a spectrum violation occurs.