SCATTER PHY

SCATTER PHY provides an open-source software-defined physical layer for experimental spectrum collaboration research, enabling controlled transmission and reception, timed scheduling, dual-interface operation, and FPGA-based filtering for shared wireless spectrum experiments.

Key Features:

• Software-Defined Radio Integration: Uses USRP X310 devices to transmit and receive wireless signals and adapt operations based on real-time spectral conditions.
• Communication with Higher Layers: Interfaces with higher layers via ZeroMQ for asynchronous messaging and coordination.
• Timed Command Scheduling: Employs the USRP’s capability to schedule timed commands to control precise transmission and reception timings.
• Dual-Interface Utilization: Operates both physical interfaces of the radio devices to maximize throughput and support complex communication scenarios.
• Custom High-Performance Filtering Blocks: Implements custom filters on the USRP internal FPGA to improve spectral efficiency and operation in adjacent spectrum bands.

Scientific Applications:

• Spectrum Sharing Research: Enables experiments to evaluate algorithms and techniques for coexistence in shared wireless spectrum bands.
• Network Coexistence Experiments: Supports studies of heterogeneous networks operating concurrently within the same frequency bands without mutual degradation.
• Spectral Efficiency Evaluation: Facilitates testing of methods to optimize spectral usage and mitigate interference via timed transmissions and FPGA filtering.

Methodology:

Experimental validation performed through experiments conducted as part of the DARPA Spectrum Collaboration Challenge.