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Performance Evaluation of Cognitive Interference Channels Using a Spectrum Overlay StrategyThe use of cognitive radios (CR) and cooperative communications techniques may assist in interference mitigation via sensing of the environment and dynamically altering communications parameters through the use of various mechanisms - one of which is the overlay technique. This report provides a performance analysis of an interference channel with a cognitive transceiver operating in an overlay configuration to evaluate the gains from using cognition. As shown in this report, a cognitive transceiver can simultaneously share spectrum while enhancing performance of non-cognitive nodes via knowledge of the communications channel as well as knowledge of neighboring users' modulation and coding schemes.
Document ID
20180001240
Acquisition Source
Glenn Research Center
Document Type
Technical Memorandum (TM)
Authors
Knoblock, Eric J.
(NASA Glenn Research Center Cleveland, OH United States)
Date Acquired
February 15, 2018
Publication Date
February 1, 2018
Subject Category
Communications And Radar
Report/Patent Number
GRC-E-DAA-TN52131
NASA/TM-2018-219754
E-19467
Funding Number(s)
WBS: WBS 553323.04.10.09.01.01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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