Intelligent Cognitive Radio Models for Enhancing Future Radio Astronomy Observations

Impact of Cognitive Radio on Radio Astronomy

The introduction of new communication techniques requires an increase in the efficiency of spectrum usage. Cognitive radio is one of the new techniques that fosters spectrum efficiency by using unoccupied frequency spectrum for communications. However, cognitive radio will increase the transmission power density and cause an increasing level of Radio Frequency Interference (RFI), which may impa...

The Coexistance of Cognitive Radio and Radio Astronomy

An increase of the efficiency of spectrum usage requires the development of new communication techniques. Cognitive radio may be one of those new technique, which uses unoccupied frequency bands for communications. This will lead to more power in the bands and therefore an increasing level of Radio Frequency Interference (RFI), which would cause loss of operation particularly for passive users ...

Enhancing Reliability of Radio Links in Cognitive Radio Networks

The radio spectrum being an important resource should be used with optimum performance. In Cognitive radio Networks it can be improved by pooling and dynamic allotment of resources. The Radio links performance deteriorates in the wireless channel due to numerous known and unknown disturbances. This problem had been tackled using channel coding techniques of various kind. Proper Channel coding t...

Radio Frequency Interference Mitigation in Radio Astronomy

Radio Astronomy with RASDR2

The RASDR design team is releasing a software-defined receiver (SDR) for radio astronomy called RASDR2 7 . The receiver consists of two high-density circuit boards -a wide-band femtocell 8 chip on the front end analog interface MyriadRF board 9 linked to a DigiRed digitization and function control board -coupled to a computer via either a USB2 or USB3 interface. RASDRViewer software runs in a W...