基于OFDM的DF中继链路能效最优资源分配策略

doi:10.3969/j.issn.0258-2724.2014.03.020

黄高勇^1,2,
方旭明^1,,,
黄博¹,
陈煜¹

基金项目:

国家自然科学基金资助项目（61071108）

中央高校基本科研业务费专项资金青年教师百人计划资助项目（SWJTU2011BR065EM）

详细信息

通讯作者:
方旭明（1962-），男，教授，博士生导师，研究方向为无线网络资源管理，E-mail：xmfang@swjtu.edu.cn

计量
- 文章访问数:860
- HTML全文浏览量:101
- PDF下载量:505
- 被引次数:0
出版历程
- 收稿日期:2013-09-23
- 刊出日期:2014-06-25

Scheme for Optimal Energy-Efficient and Resource Allocation in OFDM-Based DF Relay Link

摘要

摘要:针对DF模式的OFDM中继链路，将能效最大化资源分配问题转化为在用户最小速率需求和系统总发射功率受约束条的件下，子载波配对和功率分配的联合优化问题，提出一种低复杂度联合最优资源分配策略，并证明速率和功率约束条件下中继链路全局能效最优解的唯一性.仿真结果表明，与固定子载波配对策略相比，当中继节点位于源和目的节点连线中点位置，Rmin=1.5 Mbit/s时，排序子载波配对策略的链路可达速率和系统能效分别提高了2.3%和3.1%；与传统的等功率分配、速率最大化和功率最小化注水算法相比，本文方案能够在保证用户最小速率需求和系统功率约束的同时，自适应分配资源以实现系统能效最优.
- 能效/
- 资源分配/
- 正交频分复用/
- 解码转发中继
Abstract:The resource allocation problem in OFDM-based DF-Relayed link was formulated as a joint optimization of subcarrier pairing and power allocation while maximizing energy efficiency (EE) with both the minimum rate and the total transmission power constraints. It is proved that the optimal energy-efficient solution under the minimum rate and maximum transmit power constraints for the OFDM-based DF-Relayed link is globally unique. Subsequently, a resource allocation scheme with low complexity was proposed. Simulation results show that compared with the fixed subcarrier pairing strategy, the data rate and EE of the proposed scheme with the subcarriers pairing strategy are respectively increased by 2.3% and 3.1% when the relay node is located at the midpoint position between the source and destination nodes, and Rmin=1.5 Mbit/s. Compared with the traditional equal power allocation scheme, rate maximization and waterfilling power minimization schemes, the proposed scheme achieves the optimal EE while guaranteeing minimum rate requirements and maximum total transmission power constraints.
- energy efficiency/
- resource allocation/
- OFDM/
- decode-and-forward (DF) relay

HTML全文

参考文献 (23)

LI G Y, XU Zhikun, XIONG Cong, et al. Energy-efficient wireless communications: tutorial, survey, and open issues[J]. IEEE Wireless Communications, 2011, 18(6): 28-35.

赵越, 方旭明, 黄博, 等. 基于负载均衡的OFDMA双条中继网络资源分配策略[J]. 江南娱乐网页版入口官网下载安装学报, 2013, 48(1): 94-101. ZHAO Yue, FANG Xuming, HUANG Bo, et al. Resource allocation scheme based on load balancing for OFDMA two-hop relay networks[J]. Journal of Southwest Jiaotong University, 2013, 48(1): 94-101.

HAJIAGHAYI M, MIN Dong, BEN Liang. Jointly optimal channel pairing and power allocation for multichannel multihop relaying[J]. IEEE Transactions on Signal Processing, 2011, 59(10): 4998-5012.

WANG Wenyi, YAN Shefeng, YANG Shuyuan. Optimally joint subcarrier matching and power allocation in OFDM multihop system[J]. EURASIP Journal on Advances in Signal Processing, 2008: 241378-1-241378-8.

LEE C Y, HWANG G U. Fair and minimal power allocation in a two-hop relay network for QoS support[J]. IEEE Transactions on Wireless Communications, 2011, 10(11): 3864-3873.

GIRICI T. Joint power, subcarrier and subframe allocation in multihop relay networks[J]. International Journal of Communication Systems, 2009, 22(7): 835-855.

MIAO Guowang, HIMAYAT N, LI G Y. Energy-efficient link adaptation in frequency-selective channels[J]. IEEE Transactions on Communications, 2010, 58(2): 545-554.

MIAO Guowang, NAGEEN H, LI G Y, et al. Distributed interference-aware energy-efficient power optimization[J]. IEEE Transactions on Wireless Communications, 2011, 10(4): 1323-1333.

BUZZI S, COLAVOLPE G, DANIELA S, et al. Potential games for power control and subcarrier allocation in uplink multicell OFDMA systems[J]. IEEE Journal of Selected Topics in Signal Processing, 2011, 6(2): 89-103.

BAE C, STARK W E. End-to-end energy-bandwidth tradeoff in multihop wireless networks[J]. IEEE Transactions on Information Theory, 2009, 55(9): 4051-4066.

MADAN R, MEHTA N, MOLISCH A, et al. Energy-efficient cooperative relaying over fading channels with simple relay selection[J]. IEEE Transactions on Wireless Communications, 2008, 7(8): 3013-3025.

SUN Can, YANG Chenyang. Energy efficiency analysis of one-way and two-way relay systems[J]. EURASIP Journal on Wireless Communications and Networking, 2012: 46-1-46-18.

LI Yong, ZHANG Xiang, PENG Mugen, et al. Power provisioning and relay positioning for two-way relay channel with analog network coding[J]. IEEE Singal Processing Letters, 2011, 18(9): 517-520.

ZHANG Jiayi, YANG Lieliang, HANZO L. Energy-efficient channel-dependent cooperative relaying for the multiuser SC-FDMA uplink[J]. IEEE Transactions on Vehicular Technology, 2011, 60(3): 992-1004.

SUN Can, CEN Yuanjing, YANG Chenyang. Energy efficient OFDM relay systems[J]. IEEE Transactions on Communications, 2013, 61(5): 1797-1809.

陈煜, 方旭明, 赵越. 基于能效的解码转发中继OFDM链路自适应功率分配方案研究[J]. 电子与信息学报, 2013, 35(2): 285-290. CHEN Yu, FANG Xuming, ZHAO Yue. Energy efficient adaptive power allocation in OFDM-based decode-and-forward relay link[J]. Journal of Electronics & Information Technology, 2013, 35(2): 285-290.

YU Huan, QIN Haohao, LI Yunzhou, et al. Energy-efficient power allocation for non-regenerative OFDM relay links[J]. Science China Information Sciences, 2013, 56(2): 1-8.

LI Yong, WANG Wenbo, KONG Jia, et al. Subcarrier pairing for amplify-and-forward and decode-and-forward OFDM relay links[J]. IEEE Communications Letters, 2009, 13(4): 209-211.

WANG Liping, JI Yusheng, LIU Fuqiang. A semi-distributed resource allocation scheme for OFDMA relay-enhanced downlink systems[C]//IEEE GLOBECOM Workshops. New Orleans: IEEE, 2008: 1-6.

LI Yong, WANG Wenbo, JIA Kong, et al. Power allocation and subcarrier pairing in OFDM-based relaying networks[C]//Proceedings of the IEEE International Conference on Communications. Beijing: IEEE, 2008: 2602-2606.

BOYD S, VANDENBERGHE L. Convex optimization[M]. Cambridge: Cambridge University Press, 2003: 136-144.

LOUISE M C H. Multiuser transmit optimization for multicarrier modulation systems[D]. Stanford: Stanford University, 2000.

IEEE 802.16 Working Group. IEEE 802.16 m-08/004r5—2008 IEEE 802.16 m evaluation methodology document (EMD)[S]. New York: IEEE Press, 2009.

施引文献

附加材料 (0)

访问统计

点击查看大图

计量

文章访问数:860
HTML全文浏览量:101
PDF下载量:505
被引次数:0