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| Content Provider | IET Digital Library |
|---|---|
| Author | Chen, Li Wei, Guo |
| Abstract | In this study, the authors discuss energy-efficient power allocation for training-based multiple-input multiple-output (MIMO) system with and without feedback. Firstly, they consider the non-feedback MIMO system, where data power is equally allocated to transmit antennas. With pilot power fixed, the energy efficiency (EE)-optimal data power is derived based on the pseudo-concavity of the EE expression. When data power and pilot power are both variable, a convergent alternating optimisation algorithm is proposed to obtain EE-suboptimal data power and pilot power. Then, they consider the feedback MIMO system where data power is water-filling allocated to transmit antennas. Although the effective transmit antennas number at this scenario is discrete, they propose an algorithm to calculate it and its corresponding EE-optimal data power with pilot power fixed. When data power and pilot power are both variable, a similar convergent alternating optimisation algorithm is given. The numerical results demonstrate the EE performance of the training-based MIMO system with and without feedback. The impacts of multi-antennas configuration, circuit power and block length are also shown and analysed. |
| Starting Page | 1697 |
| Ending Page | 1707 |
| Page Count | 11 |
| ISSN | 17518628 |
| Volume Number | 7 |
| e-ISSN | 17518636 |
| Issue Number | Issue 15, Oct (2013) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-com/7/15 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-com.2013.0172 |
| Journal | IET Communications |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Antenna Array Block Length Circuit Power Convergent Alternating Optimisation Algorithm EE Expression EE-optimal Data Power Energy Efficiency-optimal Data Power Energy-efficient Power Allocation MIMO Communication Multiantenna Configuration Nonfeedback MIMO System Numerical Analysis Numerical Method Optimisation Optimisation Technique Pilot Power Pseudo-concavity Radio Link And Equipment Training-based Multiple-input Multiple-output System Transmitting Antenna Water-fllling |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering Computer Science Applications |
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