Spectrum shaping challenges in dynamic spectrum access networks with transmission hyperspace

Onur Ozdemir, Engin Masazade, Chilukuri K Mohan, Pramod Kumar Varshney, Irina Kasperovich, Richard Loe, Andrew L. Drozd, Stephen Reichhart

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Our goal in this paper is to discuss several issues and challenges involved with dynamic spectrum access in cognitive radio networks (CRNs). In this context, we introduce three optimization problems for spectrum shaping in cognitive radio networks (CRNs) using orthogonal frequency division multiplexing (OFDM). These optimization problems utilize the concept of transmission hyperspace (TH). The first problem involves maximization of sum-rate of the network under primary and secondary quality-of-service (QoS) constraints utilizing frequency and space dimensions of the TH. The second problem relaxes the omnidirectional assumption and incorporates antenna directionality in the first problem. As for the third problem, time dimension of the TH is added to the first two problems and the resulting problem is formulated as a time scheduling problem. We show that all these problems are NP-hard which requires the development of efficient heuristic algorithms.

Original languageEnglish (US)
Title of host publication2012 International Waveform Diversity and Design Conference, WDD 2012
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages218-221
Number of pages4
ISBN (Print)9781509005987
DOIs
StatePublished - Oct 28 2015
EventInternational Waveform Diversity and Design Conference, WDD 2012 - Kauai, United States
Duration: Jan 22 2015Jan 27 2015

Other

OtherInternational Waveform Diversity and Design Conference, WDD 2012
CountryUnited States
CityKauai
Period1/22/151/27/15

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ASJC Scopus subject areas

  • Signal Processing
  • Instrumentation
  • Computer Networks and Communications

Cite this

Ozdemir, O., Masazade, E., Mohan, C. K., Varshney, P. K., Kasperovich, I., Loe, R., Drozd, A. L., & Reichhart, S. (2015). Spectrum shaping challenges in dynamic spectrum access networks with transmission hyperspace. In 2012 International Waveform Diversity and Design Conference, WDD 2012 (pp. 218-221). [7311266] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/WDD.2012.7311266