Efficient Subcarrier and Power Allocation Algorithm in OFDMA Uplink System(Wireless Communication Technologies)
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概要
- 論文の詳細を見る
This letter focuses on uplink transmission in OFDMA systems. A subcarrier and power allocation problem is formulated that maximizes the throughput of OFDMA uplink systems while satisfying each user's power constraints. A greedy algorithm known to be the most efficient algorithm for this problem can provide a high quality near-optimal solution, but has the disadvantage of incurring a long computation time. As this problem should be solved in a real-time environment, computation time is a very important performance measure of algorithms. In this letter, a computationally efficient algorithm that provides a nearly identical quality, near-optimal solution as the greedy algorithm but requires less than 10% of the computation time of the greedy algorithm is proposed.
- 社団法人電子情報通信学会の論文
- 2007-02-01
著者
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Kwon Ki
Telecommunication Systems & Internet Security Lab. Department Of Industrial Engineering
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KWON Ki
Department of Surgery, Yonsei University College of Medicine
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Kim Sehun
Korea Advanced Inst. Of Sci. And Technol. Daejeon Kor
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Kim Sehun
Department Of Industrial Engineering Korea Advanced Institute Of Science And Technology
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HAN Younggoo
Department of Industrial Engineering, Korea Advanced Institute of Science and Technology
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Han Younggoo
Korea Advanced Inst. Of Sci. And Technol. Daejeon Kor
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Kwon Ki
Department Of Surgery Yonsei University College Of Medicine
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Kim Sehun
Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Korea
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