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Robust energy-efficient power loading for MIMO system under imperfect CSI
- Source :
- International Journal of Sensor Networks. 18:140
- Publication Year :
- 2015
- Publisher :
- Inderscience Publishers, 2015.
-
Abstract
- In this paper, we will investigate the energy efficient power loading problem in multiple-input multiple-output singular value decomposition MIMO-SVD architecture. Most existing power loading schemes are developed on the assumption that a scheduler possesses perfect channel state information CSI. However, in practice, perfect CSI is not always available. In this paper, we propose an energy-efficient power loading scheme for MIMO system under imperfect CSI, taking into account the effects of channel estimation error CEE. Specifically, we propose two algorithms to maximise the system energy efficiency. One is a global method which can achieve the global optimal solution with high computational complexity; the other is a suboptimal method which can obtain the approximate optimal solution with lower computational complexity. Simulation results validate the effectiveness and robustness of our proposed power loading scheme.
- Subjects :
- Mathematical optimization
Computational complexity theory
Computer Networks and Communications
Computer science
MIMO
Data_CODINGANDINFORMATIONTHEORY
Computer Science Applications
Control and Systems Engineering
Channel state information
Robustness (computer science)
Singular value decomposition
Imperfect
Electrical and Electronic Engineering
Wireless sensor network
Computer Science::Information Theory
Efficient energy use
Subjects
Details
- ISSN :
- 17481287 and 17481279
- Volume :
- 18
- Database :
- OpenAIRE
- Journal :
- International Journal of Sensor Networks
- Accession number :
- edsair.doi...........8fab38dcc57c20a2ab51170154015e61