Energy saving resource allocation scheme in OFDMA-based multi-hop cellular networks

被引：0
|
作者：
Xiang Z. [1 ,2 ]
Fang X. [1 ]
Xu P. [1 ]
机构：
[1] Sichuan Provincial Key Laboratory of Information Coding and Transmission, Southwest Jiaotong University
[2] School of Air Traffic Management, Civil Aviation Flight University of China
来源：
Xinan Jiaotong Daxue Xuebao/Journal of Southwest Jiaotong University | 2011年 / 46卷 / 05期
关键词：
Energy saving; OFDMA; Optimization; Resource allocation; Wireless multi-hop cellular network;
D O I：
10.3969/j.issn.0258-2724.2011.05.012
中图分类号：
学科分类号：
摘要：
A hierarchical tree topology of orthogonal frequency division multiple access (OFDMA)-based multi-hop cellular network was proposed to reduce energy assumption in resource allocation. The timing of transmitting and receiving for the nodes in odd and even layers is defined. The objective is to reduce the total system transmitting power, and the objective function can be applied in odd and even timeslots. The most important one among the constraints is link proportional fairness. A suboptimal resource allocation scheme was proposed to minimize total system transmitting power with lower computation complexity. Simulation results shown that, compared to traditional resource allocation scheme such as OFDM-TDMA, the proposed scheme reduced total system transmitting power by 1.5 dB while keeping proportional fairness among wireless links.
引用
收藏
页码：787 / 792
页数：5
相关论文
共 15 条
  • [1] Pabst R., Bernhard W.H., Daniel S.C., Et al., Relay-based deployment concepts for wireless and mobile broadband radio, IEEE Communication Magazine, 42, 9, pp. 80-89, (2004)
  • [2] Oyman O., Ofdm A., A centralized resource allocation policy for cellular multi-hop networks, Proc. of 2006 40th Asilomar Conference on Signals, Systems and Computers, pp. 656-660, (2006)
  • [3] Kernal K., Joseph K.H., Murali K., Et al., Cross-layer optimization for OFDMA-based wireless mesh backhaul networks, Proc. of 2007 IEEE Wireless Communications and Networking Conference, pp. 276-281, (2007)
  • [4] Cheong Y.W., Roger C.S., Letaief K.B., Et al., Multiuser OFDM with adaptive subcarrier, bit, and power allocation, IEEE Journal on Selected Areas in Communications, 17, 10, pp. 1747-1758, (1999)
  • [5] Yoon J.P., Kim W.J., Baek J.Y., Et al., Efficient uplink resource allocation for power saving in IEEE 802.16 OFDMA systems, Proc. of 2008 IEEE 67th Vehicular Technology Conference, pp. 2167-2171, (2008)
  • [6] Sadr S., Anpalagan A., Raahemifar K., Radio resource allocation algorithms for the downlink of multiuser OFDM communication systems, IEEE, 11, 3, pp. 92-106, (2009)
  • [7] Wong I.C., Shen Z., Evans B.L., Et al., A low complexity algorithm for proportional resource allocation in OFDMA systems, Proc. of The IEEE 2004 Workshop on Signal Processing Systems, pp. 1-6, (2004)
  • [8] Shen Z., Evans B.L., Andrews J.G., Adaptive resource allocation in multiuser OFDM systems with proportional rate constraints, IEEE Transaction on Wireless Communications, 4, 6, pp. 2726-2737, (2005)
  • [9] Xu W., Niu K., He Z., A probabilistic channel quantization scheme based on max-snr resource allocation in multiuser OFDM systems, IEEE Communications Letters, 12, 6, pp. 435-437, (2008)
  • [10] Tao M., Liang Y., Zhang F., Resource allocation for delay differentiated traffic in multiuser OFDM systems, IEEE Wireless Communications, 7, 6, pp. 2190-2201, (2008)
12