计算机科学 ›› 2014, Vol. 41 ›› Issue (11): 192-194.doi: 10.11896/j.issn.1002-137X.2014.11.038
刘艳,王子荣,朱性伟
LIU Yan,WANG Zi-rong and ZHU Xing-wei
摘要: 针对无线通信网络中频谱利用效率较低以及网络吞吐量不足等问题,提出一种正交混合空时网络编码的中继通信算法(QHNR)。该算法通过系统模型分析了在传输周期中的MAC阶段和BC阶段中的中继通信方式以及节点发送数据的出错率,采用分级增益的方法来提高信道利用效率,提升系统性能,并通过中继概率来选择较好的中继节点。通过网络吞吐量和网络功率分配情况来分析QHNR算法的性能。实验仿真结果表明,QHNR算法在提高网络吞吐量,提升信道利用效率上,相比采用TWR通信方案和MWR通信方案具有更好的效果。
[1] Saad A A,El-Naggar M F,Shehab_Eldin E H.Modeling andtesting of multi-resolution morphological gradient distance relay algorithm[J].Energy Procedia,2012,14:271-279 [2] Sharma S,Shi Y,Hou Y T,et al.An optimal algorithm for relay node assignment in cooperative ad hoc networks[J].IEEE/ACM Transactions on Networking (TON),2011,19(3):879-892 [3] Van Der Meulen E C.Three-terminal communication channels[J].Advances in applied Probability,1971:120-154 [4] Cover T,Gamal A E L.Capacity theorems for the relay channel[J].IEEE Transactions on Information Theory,1979,25(5):572-584 [5] 孙立悦,赵晓晖,虢明.基于中断概率的协作通信中继选择与功率分配算法[J].通信学报,2013,34(10):84-91 [6] 刘洪,任术波,项海格.不均等双向解码转发机会中继通信性能分析[J].系统工程与电子技术,2012,34(11):2344-2350 [7] Zhou Z,Teav K K,Vucetic B.Beamforming optimization andpower allocation for mimo asymmetric multi-way relay channels[J].Communications Letters,IEEE,2012,16(6):820-823 [8] Ahlswede R,Cai N,Li S Y R,et al.Network information flow[J].IEEE Transactions on Information Theory,2000,46(4):1204-1216 [9] 邓卫华,王闻今,金石,等.一种利用软信息网络编码在双向中继网络进行估计转发的方法[J].电子学报,2012,40(2):308-312 [10] 张志明,周晋,陈震,等.基于网络编码的对等网流媒体传输模型和算法[J].软件学报,2012,23(3):648-661 [11] Milewski J.Direct Diagonalisation of the Heisenberg Hamiltonian for a Magnetic Ring within the Two-Deviation Sector by Means of the Chebyshev Polynomials[J].Reports on Mathemati-cal Physics,2012,70(3):345-359 [12] Hosseini-Hashemi S,Akhavan H,Taher H,et al.Differentialquadrature analysis of functionally graded circular and annular sector plates on elastic foundation[J].Materials & Design,2010,31(4):1871-1880 [13] Majewski K,Koonert M.Conservative cell load approximation for radio networks with Shannon channels and its application to LTE network planning[C]∥2010 Sixth Advanced International Conference on Telecommunications (AICT).IEEE,2010:219-225 [14] Wang J T.Rate adaptation with joint receive diversity and power control for cognitive radio networks[J].Computer Networks,2011,55(8):1711-1718 [15] Wu Y,Chou P A,Kung S Y.Information exchange in wireless networks with network coding and physical-layer broadcast[R].MSR-TR-2004.2005 [16] Lee N,Lim J B,Chun J.Degrees of freedom of the MIMO Ychannel:Signal space alignment for network coding[J].IEEE Transactions on Information Theory,2010,56(7):3332-3342 |
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