Abstract: Heterocyclic nitrogen-containing purine derivatives and their use in the medicinal applications and compositions containing these derivatives is disclosed. A new generation of compounds possessing selective antineurodegenerative properties on neuronal cells and tissues and that can be particularly used in the treatment and prophylaxis of neurodegenerative disease, particularly in the treatment and prophylaxis of Parkinson's disease is also disclosed.

Abstract: A radio system comprises a plurality of software defined radio units, and a plurality of digital data switches each in operative communication with at least one of the radio units, with the digital data switches operatively connected to each other. A plurality of antenna units are each in operative communication with at least one of the radio units through at least one of the digital data switches. A plurality of radio resources managers are each operatively coupled to one or more of the digital data switches, with each of the radio resources managers configured to control one or more of the digital data switches to route digital data between the radio units and the antenna units.

Abstract: A radio system comprises a plurality of software defined radio units, and a plurality of digital data switches each in operative communication with at least one of the radio units, with the digital data switches operatively connected to each other. A plurality of antenna units are each in operative communication with at least one of the radio units through at least one of the digital data switches. A plurality of radio resources managers are each operatively coupled to one or more of the digital data switches, with each of the radio resources managers configured to control one or more of the digital data switches to route digital data between the radio units and the antenna units.

Abstract: Radio resource management (RRM) systems and methods are disclosed. In one embodiment, an RRM system comprises: at least one radio frequency unit that transmits and receives signals over an antenna; at least one software defined radio unit configured to communicate with the radio frequency unit, wherein the software defined radio unit generates and receives signals corresponding to different communication systems; at least one processing device coupled to the software defined radio unit; and at least one memory device coupled to the processing device and configured to store instructions which, when executed by the processing device, cause the processing device to: receive a plurality of situational data inputs; select at least one communication system using the situational data inputs; and configure the radio frequency unit and the software defined radio unit to transmit and receive signals using the selected communication system, wherein the configuration is based on the situation data inputs.

Abstract: In one embodiment, a main radio unit for an avionic communication system is provided. The main radio unit includes a software defined radio (SDR) configured to simultaneously provide at least one safety certified channel for a cockpit of an aircraft and at least one other channel for cabin services of the aircraft, wherein the SDR is configurable such that the SDR can generate signals corresponding to different communication protocols. The main radio unit also includes an interface for the at least one safety certified channel, wherein the interface is configured to convert signals between a protocol for hardware in the cockpit and a satellite communication protocol used by the SDR for the at least one safety certified channel; and wherein the SDR is configured to communicate with an RF unit for transmission and reception of signals over an antenna.

Abstract: In one embodiment, a main radio unit for an avionic communication system is provided. The main radio unit includes a software defined radio (SDR) configured to simultaneously provide at least one safety certified channel for a cockpit of an aircraft and at least one other channel for cabin services of the aircraft, wherein the SDR is configurable such that the SDR can generate signals corresponding to different communication protocols. The main radio unit also includes an interface for the at least one safety certified channel, wherein the interface is configured to convert signals between a protocol for hardware in the cockpit and a satellite communication protocol used by the SDR for the at least one safety certified channel; and wherein the SDR is configured to communicate with an RF unit for transmission and reception of signals over an antenna.