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基于Hopfield神经网络的多用户OFDM系统自适应资源分配 被引量：4

Adaptive resource allocation in multiuser OFDM system based on Hopfield neural networks
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摘要 提出一种用Hopfield神经网络对多用户OFDM通信系统进行子载波分配和比特自适应加载的方法,利用Hopfield神经网络的并行处理、收敛快、易收敛到最优解的特点,在系统性能一定和满足各个用户业务要求的条件下,对资源进行自适应分配,以使多用户OFDM系统的发射功率最小。将比特加载矩阵拆成三个矩阵来表示,简化了运算。仿真结果表明采用Hopfield神经网络方法可有效地解决通信中资源分配最优化问题,并且总体效果也优于采用遗传算法得到的结果。 This paper presents a novel method based on Hopfield Neural Networks （HNN） for the adaptive subcarrier assignment and bit loading in OFDM communication system. Utilizing the HNN characteristics such as parallel processing, fast convergence speed and easy convergence to the optimum, the method can minimize the transmitting power of the system through adaptive resource allocation, satisfying system performances and users＇ requirements. The method is simple in the computation by dividing the bit-loading matrix into three matrixes. The simulation results show that HNN can effectively solve optimization problems of resource allocation in such system, and it is more effective than the selected Genetic Algorithm （GA） method.
作者 刘玉龙 江铭炎
机构地区 山东大学信息科学与工程学院
出处 《电路与系统学报》 CSCD 北大核心 2010年第2期47-51,共5页 Journal of Circuits and Systems
基金 国家自然科学基金(60672037) 山东省自然科学基金(Y2006G06)
关键词 HOPFIELD神经网络 多用户OFDM系统 子载波分配 比特加载 Hopfield Neural Networks multiuser OFDM system subcarrier assignment bit loading
分类号 TN929.5 [电子电信—通信与信息系统]
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参考文献12

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同被引文献29

  • 1陈刚,武欣嵘,周斌,张文强,尹峰.基于遗传模拟退火算法的OFDMA系统资源分配[J].军事通信技术,2010,31(1):17-21. 被引量：1
  • 2王元莉.神经网络对带噪声汽车牌照的识别[J].甘肃联合大学学报（自然科学版）,2005,19(3):17-19. 被引量：4
  • 3于海斌,薛劲松,王浩波,徐心和.双向联想记忆神经网络的一种编码策略[J].电子学报,1997,25(5):6-10. 被引量：6
  • 4SHEN ZUKANG, ANDREWS J G, EVANS B L. Adaptive resource allocation in multiuser OFDM systems with proportional rate con- straints [ J]. IEEE Transactions on Wireless Communications, 2005, 4(6) : 2726 - 2737.
  • 5RYU S, RYU B, SEO H, et al. Urgency and effciency based pack- et scheduling algorithm for OFDMA wireless system [ C]/! Proceed- ings of IEEE ICC'2005. Piscataway, NJ: IEEE Press, 2005:1456 - 1462.
  • 6NAN ZHOU, XU ZHU, YI HUANG, et al. Low complexity cross- layer design with Packet dependent scheduling for heterogeneous traffic in multiuser OFDM Systems [ J]. IEEE Transactions on Wire- less Communications, 2010, 9(6) : 1912 - 1923.
  • 7GOTSIS A G, KOUTSOKERAS N T, CONSTANTINOU P P. PHY- and MAC-aware resource allocation and packet scheduling for single-cell OFDMA packet networks [ J ]. doumal of Communications, 2008,4 (3) :59-70.
  • 8ZHU H J, HAFEZ R H M, SYDOR J. Cross layer scheduling algorithm for different rate traffic in OFDM broadband wireless systems [ J]. In- ternational Journal of Computer Networks and Communica- tions ,2009,3( 1 ) :21-32.
  • 9ZHOU Nan., ZHU Xu, HUANG Yi,et al, Low complexity cross-layer design with packet dependent scheduling for heterogeneous traffic in multi-user OFDM systems[ J]. IEEE Trans on Wireless Communi- cations,2010,9(6) : 1912-1923.
  • 10SHEN Zu-kang,ANDREWS J G,EVANS B L. Adaptive resource allo- cation in multi-user OFDM systems with proportional rate constraints [ J]. IEEE Trans on Wireless Cornrnunicatibns, 2005,4 ( 6 ) : 2726-2?37.

引证文献4

二级引证文献2

电路与系统学报
2010年 第2期

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