TY - GEN
T1 - Spectrum shaping challenges in dynamic spectrum access networks with transmission hyperspace
AU - Ozdemir, Onur
AU - Masazade, Engin
AU - Mohan, Chilukuri K.
AU - Varshney, Pramod K.
AU - Kasperovich, Irina
AU - Loe, Richard
AU - Drozd, Andrew L.
AU - Reichhart, Stephen
N1 - Funding Information:
This material is based on research sponsored in part by the Air Force Research Laboratory, under agreement number FA8750-10-C-0221. The views and conclusions contained herein are those of the authors and should not be interpreted as necessarily representing the official policies or endorsements, either expressed or implied, of the Air Force Research Laboratory or the U.S. Government
Publisher Copyright:
© 2012 IEEE.
PY - 2015/10/28
Y1 - 2015/10/28
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84962124109&partnerID=8YFLogxK
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U2 - 10.1109/WDD.2012.7311266
DO - 10.1109/WDD.2012.7311266
M3 - Conference contribution
AN - SCOPUS:84962124109
T3 - 2012 International Waveform Diversity and Design Conference, WDD 2012
SP - 218
EP - 221
BT - 2012 International Waveform Diversity and Design Conference, WDD 2012
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - International Waveform Diversity and Design Conference, WDD 2012
Y2 - 22 January 2015 through 27 January 2015
ER -