Spectrally Compliant Waveforms for Navy Communication Systems

Increasing data rate requirements from Navy communication systems, motivated in part by future sensor netting applications, drive a corresponding need to utilize broader communication bandwidths. It is envisioned that such bandwidth broadening will cause increased conflicts with other systems in the future RF environment characterized by ever increasing spectral occupancy, leading to fragmentation of the communication band. To simultaneously maintain data-rates, communication efficiency, and communications security, TSC has developed an orthogonal signaling approach, based on multiple symbols. This technique can be viewed as a generalization of the Orthogonal Frequency Division Multiplexing (OFDM) technique. It provides practical implementation capabilities together with spectral compliance; coherent processing across fragmented bands; constant amplitude to maximize transmission power and efficiency; and enhanced communication security. Furthermore, it has the potential to support future broadening of the communication band without additional waveform complexity. During Phase I, TSC proposes to develop and evolve the concept in concrete terms and demonstrate its feasibility in convincing terms via modeling and simulation. Harris Corporation is joining TSC under a Phase I subcontract to supply hardware implementation expertise. Hardware validation in Phase II will be supported by Harris Corporation.