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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Brehmer, J. Utschick, W. |
| Copyright Year | 2008 |
| Description | Author affiliation: Associate Inst. for Signal Process., Tech. Univ. Munchen, Munich (Brehmer, J.; Utschick, W.) |
| Abstract | The problem of utility maximization in an OFDMA downlink is considered. Based on measurements of a scalable video codec, concave and nonconcave utility functions are proposed. Two approaches to solving the utility maximization problem in a modular fashion are considered, one based on Lagrange duality, the other based on a projected gradient algorithm. Both methods yield the optimum solution for concave utilities. In the nonconcave case, simulation results show almost identical performance for both methods under the assumption that the dual solution is found. In contrast, the dual approach fails if the dual subproblems can only be solved to local optimality. |
| Starting Page | 413 |
| Ending Page | 418 |
| File Size | 136770 |
| Page Count | 6 |
| File Format | |
| ISBN | 9789639799189 |
| DOI | 10.1109/WIOPT.2008.4586100 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2008-04-01 |
| Publisher Place | Germany |
| Access Restriction | Subscribed |
| Rights Holder | ICST |
| Subject Keyword | Wireless networks System performance Signal processing algorithms Traffic control Downlink Resource management Video codecs Power system modeling Video signal processing Lagrangian functions |
| Content Type | Text |
| Resource Type | Article |
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