Details
| Original language | English |
|---|---|
| Title of host publication | 2014 IEEE 10th International Conference on Wireless and Mobile Computing, Networking and Communications, WiMob 2014 |
| Publisher | IEEE Computer Society |
| Pages | 506-512 |
| Number of pages | 7 |
| ISBN (electronic) | 9781479950416 |
| Publication status | Published - 18 Nov 2014 |
| Event | 2014 10th IEEE International Conference on Wireless and Mobile Computing, Networking and Communications, WiMob 2014 - Larnaca, Cyprus Duration: 8 Oct 2014 → 10 Oct 2014 |
Publication series
| Name | International Conference on Wireless and Mobile Computing, Networking and Communications |
|---|---|
| ISSN (Print) | 2161-9646 |
| ISSN (electronic) | 2161-9654 |
Abstract
Cognitive Radio (CR) technology provides various options of spectral efficiency for unlicensed wireless communication devices to adapt their spectrum use in response to their operating environment. However, there is an obvious room for improvement regarding the data transmission efficiency and co-existence of secondary users (SUs) in underlay CR. In this paper, we introduce a novel adaptive transmission scheme for multiuser broadcast channel in underlay CR. The proposed scheme applies, on the one hand, a modified water filling algorithm to the primary link ensuring a steady transmission for SUs and, on the other hand, a precoding approach based on the interference alignment and null-steering algorithms to the secondary link enabling coexistence in multiuser underlay CR without constraints on the secondary transmit power. Simulation results show that utilizing this scheme both primary and secondary links can adapt their transmission to commonly improve the spectrum efficiency. Although this comes at the cost of capacity loss in the primary link at high SNRs, it is tolerable as long as a given quality of service for the primary link remains unaffected. In addition, the proposed scheme provides a good performance in terms of BER.
Keywords
- Interference Alignment, Multiuser MIMO broadcast channel, Water filling
ASJC Scopus subject areas
- Computer Science(all)
- Computer Networks and Communications
- Computer Science(all)
- Hardware and Architecture
- Computer Science(all)
- Software
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2014 IEEE 10th International Conference on Wireless and Mobile Computing, Networking and Communications, WiMob 2014. IEEE Computer Society, 2014. p. 506-512 6962218 (International Conference on Wireless and Mobile Computing, Networking and Communications).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - An adaptive transmission scheme for multiuser MIMO broadcast channel in cognitive radio
AU - Le, Chung
AU - Moghaddamnia, Sanam
AU - Peissig, Jürgen
PY - 2014/11/18
Y1 - 2014/11/18
N2 - Cognitive Radio (CR) technology provides various options of spectral efficiency for unlicensed wireless communication devices to adapt their spectrum use in response to their operating environment. However, there is an obvious room for improvement regarding the data transmission efficiency and co-existence of secondary users (SUs) in underlay CR. In this paper, we introduce a novel adaptive transmission scheme for multiuser broadcast channel in underlay CR. The proposed scheme applies, on the one hand, a modified water filling algorithm to the primary link ensuring a steady transmission for SUs and, on the other hand, a precoding approach based on the interference alignment and null-steering algorithms to the secondary link enabling coexistence in multiuser underlay CR without constraints on the secondary transmit power. Simulation results show that utilizing this scheme both primary and secondary links can adapt their transmission to commonly improve the spectrum efficiency. Although this comes at the cost of capacity loss in the primary link at high SNRs, it is tolerable as long as a given quality of service for the primary link remains unaffected. In addition, the proposed scheme provides a good performance in terms of BER.
AB - Cognitive Radio (CR) technology provides various options of spectral efficiency for unlicensed wireless communication devices to adapt their spectrum use in response to their operating environment. However, there is an obvious room for improvement regarding the data transmission efficiency and co-existence of secondary users (SUs) in underlay CR. In this paper, we introduce a novel adaptive transmission scheme for multiuser broadcast channel in underlay CR. The proposed scheme applies, on the one hand, a modified water filling algorithm to the primary link ensuring a steady transmission for SUs and, on the other hand, a precoding approach based on the interference alignment and null-steering algorithms to the secondary link enabling coexistence in multiuser underlay CR without constraints on the secondary transmit power. Simulation results show that utilizing this scheme both primary and secondary links can adapt their transmission to commonly improve the spectrum efficiency. Although this comes at the cost of capacity loss in the primary link at high SNRs, it is tolerable as long as a given quality of service for the primary link remains unaffected. In addition, the proposed scheme provides a good performance in terms of BER.
KW - Interference Alignment
KW - Multiuser MIMO broadcast channel
KW - Water filling
UR - http://www.scopus.com/inward/record.url?scp=84917690748&partnerID=8YFLogxK
U2 - 10.1109/WiMOB.2014.6962218
DO - 10.1109/WiMOB.2014.6962218
M3 - Conference contribution
AN - SCOPUS:84917690748
T3 - International Conference on Wireless and Mobile Computing, Networking and Communications
SP - 506
EP - 512
BT - 2014 IEEE 10th International Conference on Wireless and Mobile Computing, Networking and Communications, WiMob 2014
PB - IEEE Computer Society
T2 - 2014 10th IEEE International Conference on Wireless and Mobile Computing, Networking and Communications, WiMob 2014
Y2 - 8 October 2014 through 10 October 2014
ER -