A Low-Complexity Resource Allocation Algorithm for MIMO-OFDMA Multicast Systems with Spectrum-Guarantee Provisioning
We study the important problem of resource allocation for the downlink of Multiple-Input Multiple output (MIMO) Multicast Wireless Systems operating over frequency-selective channels and we propose a low-complexity but efficient resource allocation algorithm for MIMO-enabled OFDMA systems. The prop...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | International Journal of Digital Multimedia Broadcasting |
| Online Access: | http://dx.doi.org/10.1155/2012/585267 |
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| author | Ioannis G. Fraimis Stavros A. Kotsopoulos |
| author_facet | Ioannis G. Fraimis Stavros A. Kotsopoulos |
| author_sort | Ioannis G. Fraimis |
| collection | DOAJ |
| description | We study the important problem of resource allocation for the downlink of Multiple-Input Multiple output (MIMO) Multicast Wireless Systems operating over frequency-selective channels and we propose a low-complexity but efficient resource allocation algorithm for MIMO-enabled OFDMA systems. The proposed solution guarantees a minimum spectrum share for each user while also takes advantage of the multicast transmission mode. The presence of multiple antennas in both transmitter and receiver offers spatial diversity to the system along with the frequency diversity added by the OFDMA access scheme. The computational complexity is reduced from exponential to linear and validation of the proposed solution is achieved through various simulation scenarios in comparison with other multicast and unicast reference schemes used in MIMO-OFDMA systems. Numerical results and complexity analysis demonstrate the feasibility of the proposed algorithm. |
| format | Article |
| id | doaj-art-c35901971d10409aae7fb02bd8ef0d5f |
| institution | DOAJ |
| issn | 1687-7578 1687-7586 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Digital Multimedia Broadcasting |
| spelling | doaj-art-c35901971d10409aae7fb02bd8ef0d5f2025-08-20T03:23:12ZengWileyInternational Journal of Digital Multimedia Broadcasting1687-75781687-75862012-01-01201210.1155/2012/585267585267A Low-Complexity Resource Allocation Algorithm for MIMO-OFDMA Multicast Systems with Spectrum-Guarantee ProvisioningIoannis G. Fraimis0Stavros A. Kotsopoulos1Wireless Telecommunications Laboratory (WTL), Department of Electrical and Computer Engineering, University of Patras, 26500 Rio, GreeceWireless Telecommunications Laboratory (WTL), Department of Electrical and Computer Engineering, University of Patras, 26500 Rio, GreeceWe study the important problem of resource allocation for the downlink of Multiple-Input Multiple output (MIMO) Multicast Wireless Systems operating over frequency-selective channels and we propose a low-complexity but efficient resource allocation algorithm for MIMO-enabled OFDMA systems. The proposed solution guarantees a minimum spectrum share for each user while also takes advantage of the multicast transmission mode. The presence of multiple antennas in both transmitter and receiver offers spatial diversity to the system along with the frequency diversity added by the OFDMA access scheme. The computational complexity is reduced from exponential to linear and validation of the proposed solution is achieved through various simulation scenarios in comparison with other multicast and unicast reference schemes used in MIMO-OFDMA systems. Numerical results and complexity analysis demonstrate the feasibility of the proposed algorithm.http://dx.doi.org/10.1155/2012/585267 |
| spellingShingle | Ioannis G. Fraimis Stavros A. Kotsopoulos A Low-Complexity Resource Allocation Algorithm for MIMO-OFDMA Multicast Systems with Spectrum-Guarantee Provisioning International Journal of Digital Multimedia Broadcasting |
| title | A Low-Complexity Resource Allocation Algorithm for MIMO-OFDMA Multicast Systems with Spectrum-Guarantee Provisioning |
| title_full | A Low-Complexity Resource Allocation Algorithm for MIMO-OFDMA Multicast Systems with Spectrum-Guarantee Provisioning |
| title_fullStr | A Low-Complexity Resource Allocation Algorithm for MIMO-OFDMA Multicast Systems with Spectrum-Guarantee Provisioning |
| title_full_unstemmed | A Low-Complexity Resource Allocation Algorithm for MIMO-OFDMA Multicast Systems with Spectrum-Guarantee Provisioning |
| title_short | A Low-Complexity Resource Allocation Algorithm for MIMO-OFDMA Multicast Systems with Spectrum-Guarantee Provisioning |
| title_sort | low complexity resource allocation algorithm for mimo ofdma multicast systems with spectrum guarantee provisioning |
| url | http://dx.doi.org/10.1155/2012/585267 |
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