Circuits and Systems for Cognitive Radio Front-EndsCopyright: RWTH IAS
Digitization of TV bands have resulted in under-utlized whitespaces in 470-790 MHz which can be a solution to ever increasing spectrum demand. This area of research at IAS focusses on the system and circuit design of Cognitive Radios which can provide a frequency agile wideband radio for above mentioned UHF frequencies.
Circuits and Systems for Cognitive Radio Front-Ends
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This BMBF funded project focusses on the complete cognitive radio system for the LTE devices. At IAS, the RF front end design for such a design is being researched. As the first stage of this project, a high linear front end is built using commercially available components and the second stage aims an integrated solution.
Heinen, S.; Ashok, A.; Varga, G.; Schrey, M.; Subbiah, I.; "Cellular Cognitive Radio: An RF Point of View", IEEE International Workshop on Cognitive Cellular Systems (CCS)2014.
Subbiah, I.; Ashok,A.; Varga, G.; Schrey, M.; Heinen, S.,"System Design of a High-IF to UHF Converter Enabling Cognitive Radio", IEEE International Workshop on Cognitive Cellular Systems (CCS)2014.
Schrey; M.; Varga, G.; Ashok, A.; Subbiah, I.; Heinen,S.;"RF Frequency Converters for White Space Devices", IEEE International Workshop on Cognitive Cellular Systems (CCS)2014.
Ashok, A.; Subbiah, I.; Varga, G.; Schrey, M.; Achtzehn,A.; Petrova,M.; Heinen,S.;"whiteLAN: facilitate cost-efficient SDR research with cots ieee 802.11b/g devices", Proceeding of the 2014 ACM Workshop on Software Radio Implementation Forum (SRIF'14)
Varga, G; Schrey; M. Subbiah, I; Ashok, A; " A Broadband RF Converter Empowering Cognitive Radio Networks in the TV White Space", IEEE International Workshop on Local and Metropolitian Area Networks (LANMAN) 2014.
Ashok, A.; Subbiah, I.; Varga, G.; Schrey, M.; Heinen, S., "Radio Front-End Enabling WLAN over White Spaces Cognitively, " IEEE Wireless and Microwave Technology Conference (WAMICON) 2014.
Subbiah, I.; Schrey, M.; Ashok, A.; Varga, G.; Achtzehn, A.; Petrova, M.; Heinen, S., "Design of a TV White Space Converter Prototype Towards Cognitive Radio for WLAN Routers," Cognitive Radio Oriented Wireless Networks (CROWNCOM), 2013 8th International Conference on , vol., no., pp.208,213, 8-10 July 2013
Ashok, A.; Subbiah, I.; Heinen, S., "System Design for an Experimental Cognitive Transceiver," Ph.D. Research in Microelectronics and Electronics (PRIME), 2013 9th Conference on , vol., no., pp.229,232, 24-27 June 2013