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Marcus M.J.,Marcus Spectrum Solutions LLC
Proceedings of the IEEE

Classic spectrum management policies and regulations focused on unique frequency assignments for users to avoid intersystem interference. The growing demand for wireless communications along with the recognition that classic spectrum management leads to underutilized spectrum in time and space has resulted in interest in radio spectrum access techniques. Since spectrum use is highly regulated at the national and international levels, the status of regulatory policies is key to the implementation of new access technologies. © 2012 IEEE. Source

Marcus M.J.,Marcus Spectrum Solutions LLC | Marcus M.J.,Virginia Polytechnic Institute and State University
Proceedings of the IEEE

Radio spectrum has been subject to national and international regulation almost from its earliest days. 'Harmful interference' is a key concept used by regulators in determining whether the impact of a proposed change in permitted radio use is acceptable vis-á-vis incumbent users. While the definition of harmful interference may have been adequate when it was first adopted decades ago, modern radio technology results in many situations where the definition is ambiguous. Clarifying the concept may improve regulatory certainty for developers of new radio technology while also improving the protection of incumbent users. © 2014 IEEE. Source

Marcus M.J.,Marcus Spectrum Solutions LLC
2010 IEEE Symposium on New Frontiers in Dynamic Spectrum, DySPAN 2010

In recent regulatory decisions, spectrum regulators have been very conservative in permitting use of cognitive radio systems requiring large "safety margins". This paper describes the nature of these safety margins and the factors that lead to them. New research that might counter such concerns is suggested. Cooperative approaches involving primary user systems that actively cooperate with cognitive users ad also suggested. ©2010 IEEE. Source

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