Global ETD Search
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Showing 1 to 3 of 3 for “"Public Safety Radio"”.
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New Concepts in Front End Design for Receivers with Large, Multiband Tuning Ranges
… which is important for frequency-agile cognitive radio, surveillance, and other applications requiring wideband or multiband monitoring. Direct conversion architecture is gaining popularity due to the recent advancements in CMOS--based RFIC technology. The possibility of multiple parallel …
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Measurement of Antenna Performance in Analog LMR Systems Using PL Tone Analysis
… situ antenna performance in analog land mobile radio (LMR) FM systems. The gain (efficiency and directivity) and self-impedance of an antenna sufficiently characterize its performance and a number of traditional methods exist to measure these quantities. However it is hard to do antenna gain …
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Cognitive Gateway to Promote Interoperability, Coverage and Throughput in Heterogeneous Communication Systems
… gateway (CG), conceived as a special cognitive radio (CR) node, is proposed and designed to facilitate universal interoperability among incompatible waveforms. A proof-of-concept prototype is built and tested. Located in places where various communication nodes and diverse access networks …