INTELLIGENT VEHICULAR SYSTEMS/METHODS: Cooperative intelligent interactions between road-side access points and passing-by vehicles provide safety enhancement and bi-directional dissemination of information. A variety of illustrative architectures/configurations of systems/methods have been researched relating to communications between a vehicular transponder and one or more road-side access points connected to a Central Processing Unit (CPU).
Architectures/configurations of systems/methods developed are generic and applicable to enabling functionality of a variety of devices, including femtocells and mobile WiFi access points (smartphones). Intellectual Property in this space has been attained via several issued patents.
Architectures/configurations of systems/methods developed are generic and applicable to enabling functionality of a variety of devices, including femtocells and mobile WiFi access points (smartphones). Intellectual Property in this space has been attained via several issued patents.
FEATURELESS, SPECTRUM-AGILE COMMUNICATIONS: A signal space may be defined by specifying a bandwidth and a time duration that may be associated with a specific set of waveforms. Such specific set of waveforms may include a specific spectral density profile and may be generated by a waveform generator adhering to a specific statistical distribution. This research is based upon a recognition that the signal space includes a specific number of orthogonal waveform dimensions that depend upon said bandwidth and time duration but remain substantially independent of other aspects of said specific set of waveforms.
Accordingly, given the bandwidth, time duration and the specific set of waveforms associated therewith (as generated by said waveform generator, adhering to said specific spectral density profile and said specific statistical distribution), a set of featureless orthogonal waveforms may be generated therefrom, over said specific number of orthogonal waveform dimensions, and may be used as a signaling alphabet for a communications system/method. Intelligence may thus be transmitted using waveforms that are pseudo-random, featureless, noise-like and devoid of revealing cyclostationary signature(s). Besides being featureless, such waveforms may be based upon any desired spectral density profile, continuous or non-continuous, and may be formed adaptively and opportunistically responsive to cognitive spectrum sensing in order to avoid interference.
Applications of various aspects of this research may be found in both military and commercial spaces. In military applications, special forces operating from behind enemy lines may benefit from the featureless, opportunistic, frequency agile nature of wireless communications. In the commercial space wireless systems such as, for example, 4G LTE and/or LTE-Advanced, stand to benefit from the spectrum agile teachings of the technique by using such teachings to provide spectrum, on demand and as needed, in order to enhance the user's experience and/or to minimize interference. Commercially, applications relate to carrier aggregation whereby a non-continuous spectral density profile is used to increase data throughput. Intellectual Property in this space has been attained via several issued patents.
Accordingly, given the bandwidth, time duration and the specific set of waveforms associated therewith (as generated by said waveform generator, adhering to said specific spectral density profile and said specific statistical distribution), a set of featureless orthogonal waveforms may be generated therefrom, over said specific number of orthogonal waveform dimensions, and may be used as a signaling alphabet for a communications system/method. Intelligence may thus be transmitted using waveforms that are pseudo-random, featureless, noise-like and devoid of revealing cyclostationary signature(s). Besides being featureless, such waveforms may be based upon any desired spectral density profile, continuous or non-continuous, and may be formed adaptively and opportunistically responsive to cognitive spectrum sensing in order to avoid interference.
Applications of various aspects of this research may be found in both military and commercial spaces. In military applications, special forces operating from behind enemy lines may benefit from the featureless, opportunistic, frequency agile nature of wireless communications. In the commercial space wireless systems such as, for example, 4G LTE and/or LTE-Advanced, stand to benefit from the spectrum agile teachings of the technique by using such teachings to provide spectrum, on demand and as needed, in order to enhance the user's experience and/or to minimize interference. Commercially, applications relate to carrier aggregation whereby a non-continuous spectral density profile is used to increase data throughput. Intellectual Property in this space has been attained via several issued patents.
Further advancements applicable to military and commercial systems, such as in Advanced OFDM systems, 4G LTE and/or LTE-Advanced, relate to systems/methods of preferential communications, improved encryption/security, increased capacity, space division multiple access and compact frequency reuse/interference reduction via receiving, processing and re-transmitting techniques.
