| Li Yibing (李一兵),Zhang Xu,Ye Fang.[J].高技术通讯(英文),2014,20(1):1~8 |
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| Utility-optimization dynamic subcarrier allocation algorithm for SC-FDMA systems |
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| DOI：10.3772/j.issn.1006-6748.2014.01.001 |
| 中文关键词: |
| 英文关键词: single carrier frequency division multiple access (SC-FDMA), dynamic subcarrier allocation (DSA), utility function, transmission capacity requirements, utility-optimization algorithm, greedy algorithm, proportional fair algorithm |
| 基金项目: |
| Author Name | Affiliation | | Li Yibing (李一兵) | | | Zhang Xu | | | Ye Fang | |
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| 中文摘要: |
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| 英文摘要: |
| Two utility-optimization dynamic subcarrier allocation (DSA) algorithms are designed for single carrier frequency division multiple access system (SC-FDMA). The two proposed algorithms aim to support diverse transmission capacity requirements in wireless networks, which consider both the channel state information (CSI) and the capacity requirements of each user by setting appropriate utility functions. Simulation results show that with considerable lower computational complexity, the first utility-optimization algorithm can meet the system capacity requirements of each user effectively. However, the rate-sum capacity performance is poor. Furthermore, the second proposed utility-optimization algorithm can contribute a better trade-off between system rate-sum capacity requirement and the capacity requirements of each user by introducing the signal to noise ratio (SNR) information to the utility function based on the first utility-optimization algorithm, which can improve the user requirements processing capability as well as achieve a better sum-rate capacity. |
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