吉林大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (6): 2049-2055.doi: 10.13229/j.cnki.jdxbgxb201506045
赵晓晖, 杨伟伟, 金晓光
ZHAO Xiao-hui, YANG Wei-wei, JIN Xiao-guang
摘要: 针对同时包含有时延约束(DC)用户和没有时延约束(NDC)用户的异构系统资源分配问题,在基站和中继站功率分别约束的条件下,为保证DC用户的固定数据速率,同时最大化NDC用户的总数据速率,提出了一种自适应资源分配算法。该算法在子载波分配过程中,考虑了两跳中继链路子载波配对和不配对两种情况,在功率分配过程中,实现了最优功率分配。仿真结果表明,本文提出的资源分配算法可以在较低计算复杂度下取得良好性能。
中图分类号:
[1] Tong X J, Luo T. Theory and Applications of OFDM Wireless Communications[M]. Beijing:Posts & Telecom Press,2003. [2] Jang J, Lee K B. Transmit power adaptation for multi-user OFDM systems[J]. IEEE Journal on Selected Areas in Communications,2003,21(2):171-178. [3] Rhee W, Cioffi J M. Increase in capacity of multi-user OFDM system using dynamic sub-channel allocation[C]∥Proceedings of IEEE Vehicular Technology Conference,Tokyo, Japan,2000:1085-1089. [4] Shen Z K, Andrews J G, Evans B L. Adaptive resource allocation in multiuser OFDM systems with proportional rate constraints[J]. IEEE Transaction on Wireless Communications,2005,4(6):2726-2737. [5] Zhou M Y, Li L H, Wang H F, et al. Sub-carrier coupling for OFDM based AF multi-relay systems[C]∥IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications,Athens,2007:1-5. [6] Hammerstrom I, Wittneben A. On the optimal power allocation for nonregenerative OFDM relay links[C]∥IEEE International Conference on Communications,Istanbul,2006:4463-4468. [7] Guo J, Luo H W, Li H X. Opportunistic relaying in cooperative OFDM networks for throughput and fairness improvement[C]∥IEEE Global Telecommunications Conference,New Orleans,LO,2008:1-5. [8] Fan B, Wu W, Zheng K, et al. Proportional fair-based joint subcarrier and power allocation in relay-enhanced orthogonal frequency division multiplexing systems[J]. IET Communications,2010,4(10):1143-1152. [9] Yang D C, Xu J S, Hu S K. Resource allocation for multi-user two-way OFDMA relay networks with user rate constraints[J]. Elsevier Journal of China University of Posts and Telecommunications,2011,18(3):54-61. [10] Xu W J, He Z Q, Niu K, et al. Multicast resource allocation with min-rate requirements in OFDM systems[J]. Elsevier Journal of China University of Posts and Telecommunications,2010,17(3):24-30. [11] Lee T H, Huang Y W. Resource allocation achieving high system throughput with QoS support in OFDMA-based system[J]. IEEE Transactions on Wireless Communications,2012,60(3):851-861. [12] Chen S P, Wang W B, Zhang X, et al. Resource allocation schemes in amplify-and-forward OFDM cooperative relay systems with multi-media traffic[J]. Journal on Communications,2010,31(4):116-121. [13] IEEE 802.16j draft-2008. Draft standard for local and metropolitan area networks, Part 16: air interface for fixed and mobile broadband wireless access systems, multi-hop relay specification[S]. [14] Yu W, Lui R. Dual methods for nonconvex spectrum optimization of multicarrier systems[J]. IEEE Transactions on Communications,2006,54(7):1310-1322. [15] Stephen B, Lieven V. Convex Optimization[M].Cambridge: Cambridge University Press, 2004. |
[1] | 苏寒松,代志涛,刘高华,张倩芳. 结合吸收Markov链和流行排序的显著性区域检测[J]. 吉林大学学报(工学版), 2018, 48(6): 1887-1894. |
[2] | 徐岩,孙美双. 基于卷积神经网络的水下图像增强方法[J]. 吉林大学学报(工学版), 2018, 48(6): 1895-1903. |
[3] | 黄勇,杨德运,乔赛,慕振国. 高分辨合成孔径雷达图像的耦合传统恒虚警目标检测[J]. 吉林大学学报(工学版), 2018, 48(6): 1904-1909. |
[4] | 李居朋,张祖成,李墨羽,缪德芳. 基于Kalman滤波的电容屏触控轨迹平滑算法[J]. 吉林大学学报(工学版), 2018, 48(6): 1910-1916. |
[5] | 应欢,刘松华,唐博文,韩丽芳,周亮. 基于自适应释放策略的低开销确定性重放方法[J]. 吉林大学学报(工学版), 2018, 48(6): 1917-1924. |
[6] | 陆智俊,钟超,吴敬玉. 星载合成孔径雷达图像小特征的准确分割方法[J]. 吉林大学学报(工学版), 2018, 48(6): 1925-1930. |
[7] | 刘仲民,王阳,李战明,胡文瑾. 基于简单线性迭代聚类和快速最近邻区域合并的图像分割算法[J]. 吉林大学学报(工学版), 2018, 48(6): 1931-1937. |
[8] | 单泽彪,刘小松,史红伟,王春阳,石要武. 动态压缩感知波达方向跟踪算法[J]. 吉林大学学报(工学版), 2018, 48(6): 1938-1944. |
[9] | 姚海洋, 王海燕, 张之琛, 申晓红. 双Duffing振子逆向联合信号检测模型[J]. 吉林大学学报(工学版), 2018, 48(4): 1282-1290. |
[10] | 全薇, 郝晓明, 孙雅东, 柏葆华, 王禹亭. 基于实际眼结构的个性化投影式头盔物镜研制[J]. 吉林大学学报(工学版), 2018, 48(4): 1291-1297. |
[11] | 陈绵书, 苏越, 桑爱军, 李培鹏. 基于空间矢量模型的图像分类方法[J]. 吉林大学学报(工学版), 2018, 48(3): 943-951. |
[12] | 陈涛, 崔岳寒, 郭立民. 适用于单快拍的多重信号分类改进算法[J]. 吉林大学学报(工学版), 2018, 48(3): 952-956. |
[13] | 孟广伟, 李荣佳, 王欣, 周立明, 顾帅. 压电双材料界面裂纹的强度因子分析[J]. 吉林大学学报(工学版), 2018, 48(2): 500-506. |
[14] | 林金花, 王延杰, 孙宏海. 改进的自适应特征细分方法及其对Catmull-Clark曲面的实时绘制[J]. 吉林大学学报(工学版), 2018, 48(2): 625-632. |
[15] | 王柯, 刘富, 康冰, 霍彤彤, 周求湛. 基于沙蝎定位猎物的仿生震源定位方法[J]. 吉林大学学报(工学版), 2018, 48(2): 633-639. |
|