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Transform-Domain-Based Cognitive Radio Networks for Harsh Interference Environments.
- Source :
-
IEEE Network . Jul/Aug2022, Vol. 36 Issue 4, p78-85. 8p. - Publication Year :
- 2022
-
Abstract
- In harsh interference environments, there are all kinds of electromagnetic interference to disturb the communication links. In this article, by integrating transform domain communication system (TDCS) into cognitive radio (CR), transform-domain-based cognitive radio (TD-CR) is proposed to flexibly adopt TD-based spread spectrum technology to generate an adaptive anti-interference modulation waveform over the idle spectrum, which will improve both the anti-interference performance and spectrum efficiency of CR in the harsh interference environments. First, the transmitter and receiver of the TD-CR system are designed, where the key technologies, including spectrum sensing, spectrum magnitude shape, random phase mapping, fundamental modulation waveform, and signal detection, are described. Second, novel interleave-division multiple access and clustering multiple access for the TD-CR are proposed to improve the multiuser spectrum access ability. Thirdy, artificial-intelligence-enabled TD-CR is proposed to achieve intelligent spectrum sensing and optimal waveform transform by a cognitive engine. Then simulation results are provided to verify the anti-interference performance of the TD-CR. Finally, some future research challenges are discussed. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 08908044
- Volume :
- 36
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- IEEE Network
- Publication Type :
- Academic Journal
- Accession number :
- 160691351
- Full Text :
- https://doi.org/10.1109/MNET.001.2100590