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Volume 29 Issue 6
Jan.  2011
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Zhang Dong-mei, Xu You-yun, Cai Yue-ming. Linear Water-Filling Power Allocation Algorithm in OFDMA System[J]. Journal of Electronics & Information Technology, 2007, 29(6): 1286-1289. doi: 10.3724/SP.J.1146.2005.01345
Citation: Zhang Dong-mei, Xu You-yun, Cai Yue-ming. Linear Water-Filling Power Allocation Algorithm in OFDMA System[J]. Journal of Electronics & Information Technology, 2007, 29(6): 1286-1289. doi: 10.3724/SP.J.1146.2005.01345

Linear Water-Filling Power Allocation Algorithm in OFDMA System

doi: 10.3724/SP.J.1146.2005.01345
  • Received Date: 2005-10-24
  • Rev Recd Date: 2006-05-08
  • Publish Date: 2007-06-19
  • Power allocation is an important issue of resource scheduling in OFDMA system. In this paper, an algorithm of linear water-filling power allocation is proposed through searching for a rapid means for confirming the sub-carriers which need not allocate power. It can finish the process of power water-filling without time after time iterative calculation. The simulation results show that the throughput of the proposed algorithm approaches the algorithm of iterated water-filling power allocation.
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  • Knopp R and Humblet P. Information capacity and power control in single cell multiuser communications. in Proc. IEEE International Conference on Communications (ICC95), Seattle, USA, June 1995: 331-335.[2]Jang J and Lee K B. Transmit power adaptation for multiuser OFDM systems[J].IEEE J. on Selected Areas in Communications.2003, 21(2):171-178[3]Jang J, Lee K B, and Lee Y H. Transmit power and bit allocations for OFDM systems in a fading channel. in Proc. IEEE Global Communications Conference, San Francisco, CA, Dec. 2003: 283-288.[4]Wong I C, Shen Z k, and Evans B L, et al.. A low complexity algorithm for proportional resource allocation in OFDMA systems. IEEE International Signal Processing Systems Workshop, Oct 13-15, 2004: 1-6.[5]Shen Z, Andrews J G, and Evans B L. Optimal power allocation in multiuser OFDM systems. in Proc. IEEE Global Communications Conference, San Francisco, CA, Dec. 2003: 337-341.[6]Goldsmith A J and Chua S G. Variable-rate variable-power MQAM for fading channels[J].IEEE Trans. on Commun.1997, 45(10):1218-1230[7]杨大成. 移动传播环境. 北京: 机械工业出版社, 2003.
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