Spectrum Agile Network Distributed Subcarrier Allocation Phase II

The primary goal of this project is to analyze and design an integrated solution to dynamic spectrum access (DSA) and cognitive spectrum management (CSM) in JTRS Wideband Networking Waveform (WNW). DSA software provides spectrum sensing, classification, dynamic frequency selection, frequency coordination among nodes, and rendezvous to support network formation, network entry and network merging for WNW. CSM enhances WNW's frequency decision algorithms to include interference, traffic loading and topology information. The frequency selection algorithms from DSA, WNW, and CSM point of view must be evaluated to ensure the network remains stable, avoids interference, and efficiently uses available spectrum. In addition to channel interference, network topology is also factored in to and impacted by decisions taken by DSA, WNW, and CSM. Therefore another technical problem is ensuring that network topology remains stable and optimal in dynamic RF conditions with multiple adaptive technologies. These technologies hold the greatest near-term opportunity for JTRS WNW to work robustly while adhering to the reduction in spectrum resulting from the President"s Memorandum to transfer 500MHz of spectrum from federal users to commercial enterprise.