High Performance Low PAPR Spectrally Compliant Waveforms for Naval Communication Systems over Non-Contiguous Spectrum Fragments

Built upon our prior efforts and existing industry/academia relationships, our research and development efforts in this Phase II will develop and commercialize an innovative high performance spectrally compliant waveform generator not only for communication waveforms but also for other naval RF applications such as radar, navigation and electronic warfare systems in complex and hostile environments. The developed system is an integration of novel spreading spectrum technology, cognitive radio technology, software defined radio technology, and cross layer design techniques. Our main objectives are: (1) Create an universal waveform generating platform to generate spectrally compliant cognitive RF waveforms for all RF applications operating over multiple non-contiguous spectrum fragments; (2) Develop an intelligent spectrum sensing engine which is capable of not only detecting the existence of RF transmissions and spectrum fragments but estimate the parameters of the RF transmissions and finally identify the signals; (3) Further improve the performance of RF applications by exploiting both unused spectrum holes and under-used spectrum bands; (4) Implement these complex algorithms for real-time applications using a software defined radio platform; (5) Commercialize the research and development results; and (6) (optional) extend the work to underwater acoustic signals to enhance the spectrum efficiency of underwater acoustic communication and sonar applications.