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一种基于最小误码率的OFDM自适应比特及功率分配算法 被引量：9

A Minimum Bit Error Rate Loading Algorithm for OFDM Systems
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摘要 OFDM自适应调制技术根据各子载波在频率选择性衰落信道中不同的瞬时增益,动态地分配数据比特和发射功率,可以优化系统性能,提高频谱效率。该文主要研究OFDM系统发射功率和传输比特数不变时误码率最小化的自适应(MA)算法。提出一种以注水门限为迭代参数的MA算法,并引入有记忆步长迭代法,提高算法的稳定性。仿真结果表明,与过去的算法相比,该算法能以较低的复杂度获得更好的性能。 An efficient power and bit allocation algorithm is proposed for wireless OFDM systems aiming at minimization of the bit error rate under the constraint of total transmit power and data rate. The algorithm is based on the water-filling approach and adopts a new iterative method to improve its stability. Simulation results show the proposed algorithm has a better performance and a lower computational complexity compared to the previous ones.
作者 薛金银 焦秉立
机构地区 北京大学电子学系
出处 《电子与信息学报》 EI CSCD 北大核心 2006年第7期1279-1281,共3页 Journal of Electronics & Information Technology
基金 富士通公司资助研究课题
关键词 正交频分复用(OFDM) 自适应调制 注水原理 OFDM, Adaptive modulation, Water-filling
分类号 TN92 [电子电信—通信与信息系统]
  • 相关文献

参考文献15

  • 1Bingham J A C. Multicarrier modulation for data transmission: an idea whose time has come. IEEE Commun. Mag., 1990, 28(5):5-14.
  • 2Chow P S, Cioffi J M, Bingham J A C. A practical discre temultitone transceiver loading algorithm for data transmission over speetrally shaped channels. IEEE Trans. on Commun., 1995,43(2/3/4): 773 - 775.
  • 3Fischer R F H, Huber J B. A new loading algorithm for discre temultitone transmission, IEEE Globecom'96, London, Nov. 18-22,1996, 1:724 - 728.
  • 4Hughes-Hartogs D. Ensemble modem structure for imperfect transmission media. U.S. Patents Nos. 4,679,227 (July 1987),4,731,816 (March 1988)
  • 5Hughes-Hartogs D. Ensemble modem structure for imperfect transmission media. U.S. Patents Nos. 4,833,706 (May 1989).
  • 6Leke A, Cioffi J M. A maximum rate loading algorithm for discrete multitone modulation systems. IEEE Globecom'97,Phoenix, Arizona USA, Nov. 3-8, 1997, 3:1514 - 1518.
  • 7Wyglinski A M, Labeau F, Kabal P. An efficient bit allocation algorithm for multicarrier modulation. IEEE WCNC, Atlanta, GA USA, Mar. 21-25, 2004, 2:1194 - 1199,
  • 8Jang J, Lee K B, Lee Y H. Transmit power and bit allocations for OFDM systems in a fading channel. IEEE Globecom, San Francisco, CA USA, Dec. 1-5, 2003, 6:858 - 862.
  • 9Krongold B S, Ramchandran K, Jones D L. Computationally efficient optimal power allocation algorithms for multicarrier communication systems. IEEE Trans. on Commun., 2002, 50(1):23 - 27.
  • 10Goldfeld L, Lyandres V, Wulich D. Minimum BER power loading for OFDM in fading channel. IEEE Trans. on Commun., 2002,50(11): 1729 - 1733.

二级参考文献17

  • 1Bingham J A C. Multicarrier Modulation for Data Transmission: An Idea Whose Time Has Come. IEEE Commun Mag, 1990, 28(5): 5-14.
  • 2Chow P S, Cioffi J M, Bingham J A C. A practical Discrete Muhitone Transceiver Loading Algorithm for Data Transmission over Spectrally Shaped Channels. IEEE Trans Commun,1995, 43(2/3/4): 773-775.
  • 3Fischer R F H, Huber J B, A New Loading Algorithm for Discrete Multitone Transmission. IEEE Globecom'96, 1996,1 : 724-728.
  • 4Hughes-Hartogs D. Ensemble Modem Structure for Imperfect Transmission Media. U.S. Patents Nos. 4,679,227 (July 1987).
  • 5Hughes-Hartogs D. Ensemble Modem Structure for Imperfect Transmission Media. U.S. Patents Nos. 4,731,816 (March 1988).
  • 6Hughes-Hartogs D. Ensemble Modem Structure for Imperfect Transmission Media. U.S. Patents Nos. 4,833,706 (May 1989).
  • 7Leke A, Cioffi J M. A Maximum Rate Loading Algorithm for Discrete Multitone Modulation Systems. IEEE Globecom'97,1997, 3:1514-1518.
  • 8Wyglinski A M, Labeau F, Kabal P. An Efficient Bit Allocation Algorithm for Multicarrier Modulation. IEEE WCNC, 2004, 2:1194-1199.
  • 9Jang J, Lee K B, lee Y H. Transmit Power and Bit Allocations for OFDM Systems in a Fading Channel. IEEE Globecom, 2003, 6:858-862.
  • 10Kroagold B S, Ramchandran K, Jones D L. Computationally Efficient Optimal Power Allocation Algorithms for Multicarrier Communication Systems. IEEE Trans Commun, 2000,50(1) : 23-27.

共引文献8

同被引文献73

引证文献9

二级引证文献16

电子与信息学报
2006年 第7期

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