Type
Conference PaperKAUST Department
Communication Theory LabComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program
Physical Science and Engineering (PSE) Division
Date
2017-03-20Online Publication Date
2017-03-20Print Publication Date
2016-09Permanent link to this record
http://hdl.handle.net/10754/623830
Metadata
Show full item recordAbstract
Due to the massive data traffic in wireless networks, energy consumption has become a crucial concern, especially with the limited power supply of the mobile terminals and the increasing CO2 emission of the cellular industry. In this context, we study the energy efficiency (EE) of MIMO spectrum sharing cognitive radio (CR) systems under power and interference constraints. We present an energy-efficient power allocation framework based on maximizing the average EE per parallel channel resulting from the singular value decomposition (SVD) eigenmode transmission. We also present a sub-optimal low-complexity power allocation scheme based on the water-filling power allocation. In the numerical results, we show that the sub-optimal power allocation achieves at least 95% of the optimal performance. In addition, we show that adopting more antennas is more energy efficient for a given power budget. Finally, we show that the interference threshold has a significant effect on both the EE and the spectral efficiency at high-power regime.Citation
Sboui L, Rezki Z, Sultan A, Alouini M-S (2016) Energy-Efficient Power Allocation for Cognitive MIMO Channels. 2016 IEEE 84th Vehicular Technology Conference (VTC-Fall). Available: http://dx.doi.org/10.1109/vtcfall.2016.7880994.Conference/Event name
84th IEEE Vehicular Technology Conference, VTC Fall 2016Additional Links
http://ieeexplore.ieee.org/document/7880994/ae974a485f413a2113503eed53cd6c53
10.1109/vtcfall.2016.7880994