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两跳OFDM-AF中继系统的自适应比特和功率分配

DOI: 10.13190/jbupt.200803.107.289, PP. 107-110

Keywords: 中继系统,正交频分复用,放大转发,自适应比特和功率分配

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Abstract:

将自适应比特和功率分配引入两跳正交频分复用-放大转发(OFDM-AF)中继系统,从而提出了该系统中的比特和功率分配的最优化问题;并结合贪婪算法的思想,提出了一种自适应比特和功率分配算法,在可靠传输要求和发送功率限制的条件下能最大化吞吐量.仿真结果表明,该算法在保证可靠传输的同时,大大提升了系统的有效性.

References

[1]  Nosratinia A, Hedayat A. Cooperative communication in wireless networks[J]. IEEE Communication Magazine, 2004, 42(10): 74-80.
[2]  Zhang J, Shao C, Wang Y, et al. Performance of a two-hop cellular system with different power allocation scheme//IEEE VTC 2004-Fall. : IEEE Press, 2004: 4538-4542.
[3]  张静美, 邵春菊, 王莹, 等. 基于不同信道状态信息的两跳中继系统最优功率分配[J]. 北京邮电大学学报, 2005, 28(4): 58-61. Zhang Jingmei, Shao Chunju, Wang Ying, et al. Optimal power allocation for two-hop relaying system with different channel state information [J]. Journal of Beijing University of Posts and Telecommunications, 2005, 28(4): 58-61.
[4]  Hammerstrom I, Wittneben A. On the optimal power allocation for nonregenerative OFDM relay links//IEEE ICC 2006. Istanbul: IEEE Press, 2006: 4463-4468.
[5]  李立华, 王勇, 张平. 移动通信中的先进信号处理技术[M]. 北京: 北京邮电大学出版社, 2005.
[6]  Goldsmith A J, Ghee C S. Variable-rate variable-power MQAM for fading channels[J]. IEEE Transaction on Communication, 1997, 45(10): 1218-1230.
[7]  Chung S T, Goldsmith A J. Degrees of freedom in adaptive modulation: a unified view[J]. IEEE Transaction on Communication, 2001, 49(9): 1561-1571.
[8]  IEEE C802. 16j-06/026r0-2006, 802. 16j (mobile multihop relay) usage models[S]. 2006.
[9]  Campello J. Optimal discrete bit loading for multicarrier modulation systems//IEEE International Symposium on Information Theory. : IEEE Press, 1998: 193.

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