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| Content Provider | IET Digital Library |
|---|---|
| Author | Sabagh, Mohammad R. Dianati, Mehrdad Tafazolli, Rahim Mehrjoo, Mehri |
| Abstract | This study investigates energy efficient allocation of radio resource blocks in orthogonal frequency division multiple access (OFDMA) systems while considering the status of the users’ data buffers to reduce packet dropping rate by the downlink scheduler. The proposed scheme exploits the fluctuations of traffic load to efficiently schedule users’ data packets by reducing the overall energy consumption of the system whenever the status of data buffers permits. From information theory point of view, the proposed scheme exploits the fundamental trade-off between energy efficiency and spectral efficiency to perform scheduling. First, the problem is formulated as an optimisation problem and then a novel solution, based on dynamic programming, is applied. By comparing the analytical solution with the ones obtained by exhaustive search, it is demonstrated that the proposed scheme is close to the optimal solution, with low computational complexity. In addition, comprehensive simulations are conducted to evaluate the performance of the suggested algorithm. Both analytical and simulation results demonstrate the superiority of the proposed algorithm compared with the well-known benchmark schemes in terms of energy efficiency and packet dropping rate. |
| Starting Page | 1479 |
| Ending Page | 1492 |
| Page Count | 14 |
| ISSN | 17518628 |
| Volume Number | 9 |
| e-ISSN | 17518636 |
| Issue Number | Issue 12, Aug (2015) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-com/9/12 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-com.2014.0782 |
| Journal | IET Communications |
| Publisher Date | 2015-05-27 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Data Buffers Data Packets Downlink Scheduler Dynamic Programming Energy Conservation Energy Efficient Allocation Frequency Division Multiple Access Modulation And Coding Method Multiple Access Communication OFDM Modulation OFDMA System Optimisation Technique Packet Dropping Rate Packet Radio Network Quality of Service Radio Link And Equipment Radio Resource Blocks Resource Allocation Resource Block Allocation Spectral Efficiency Telecommunication Power Management Telecommunication Scheduling Traffic Load Fluctuation |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering Computer Science Applications |
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