Joint Downlink and Uplink Resource Allocation for Multi-user Multi-carrier Simultaneous Wireless Information and Power Transfer Systems
-
摘要: 无线携能通信(SWIPT)技术是解决无线网络能量受限问题的有效方法，该文研究一个由基站(BS)和多用户组成的多载波SWIPT系统，其上行和下行链路均采用正交频分复用(OFDM)技术。在下行链路中，基站向用户同时进行信息与能量传输；在上行链路中，用户利用从基站接收的能量向基站回传信息。该文以最大化上下行加权和速率为目标，联合优化上行和下行的子载波分配和功率分配，提出基于拉格朗日对偶法和椭球法的最优联合资源分配算法。计算机仿真结果证实了该算法的有效性。Abstract: Simultaneous Wireless Information and Power Transfer (SWIPT) is an effective technique to solve the energy limitation problem of wireless networks. A multi-carrier SWIPT communication system that includes one Base Station (BS) and multiple users is investigated. Both the uplink and downlink of the system apply the OFDM transmission. In the downlink, the BS transmits information and power over different subcarriers to the users simultaneously. In the uplink, the user transmits information to the BS by using the power harvested from the BS in the downlink. This paper aims to maximize the weighted sum of the downlink and uplink achievable rates by jointly optimizing subcarrier allocation and power allocation of the uplink and downlink. An optimal algorithm is proposed to solve this resulted optimization problem, which is based on the Lagrange duality method and the ellipsoid method. The performances of the proposed algorithm are verified by computer simulations.
-
VARSHNEY L R. Transporting information and energy simultaneously[C]. Proceedings of 2008 IEEE International Symposium on Information Theory, Toronto, Canada, 2008: 1612–1616. doi: 10.1109/ISIT.2008.4595260. LIU Liang, ZHANG Rui, and CHUA K C. Wireless information transfer with opportunistic energy harvesting[J]. IEEE Transactions on Wireless Communications, 2013, 12(1): 288–300. doi: 10.1109/TWC.2012.113012.120500 LIU Liang, ZHANG Rui, and CHUA K C. Secrecy wireless information and power transfer with MISO beamforming[J]. IEEE Transactions on Signal Processing, 2014, 62(7): 1850–1863. doi: 10.1109/tsp.2014.2303422 ZHANG Guangchi, XU Jie, WU Qingqing, et al. Wireless powered cooperative jamming for secure OFDM system[J]. IEEE Transactions on Vehicular Technology, 2018, 67(2): 1331–1346. doi: 10.1109/TVT.2017.2756877 ZHANG Guangchi, LI Xueyi, CUI Miao, et al. Signal and artificial noise beamforming for secure simultaneous wireless information and power transfer multiple-input multiple-output relaying systems[J]. IET Communications, 2016, 10(7): 796–804. doi: 10.1049/iet-com.2015.0482 LI Xueyi, ZHANG Qi, ZHANG Guangchi, et al. Joint resource allocation with subcarrier pairing in cooperative OFDM DF multi-relay networks[J]. IET Communications, 2015, 9(1): 78–87. doi: 10.1049/iet-com.2014.0346 LI Xueyi, ZHANG Qi, ZHANG Guangchi, et al. Joint source and relays power allocation for MIMO AF multi-relay networks[J]. Wireless Personal Communications, 2015, 83(3): 1915–1926. doi: 10.1007/s11277-015-2494-z LU Weidang, GONG Yi, WU Jiaying, et al. Simultaneous wireless information and power transfer based on joint subcarrier and power allocation in OFDM systems[J]. IEEE Access, 2017, 5: 2763–2770. doi: 10.1109/ACCESS.2017.2671903 NA Zhenyu, LI Xiaotong, LIU Xin, et al. Subcarrier allocation based simultaneous wireless information and power transfer for multiuser OFDM systems[J]. EURASIP Journal on Wireless Communications and Networking, 2017, 2017: 148. doi: 10.1186/s13638-017-0932-1 GE Xiaohu, SUN Yang, GHARAVI H, et al. Joint Optimization of computation and communication power in multi-user massive MIMO systems[J]. IEEE Transactions on Wireless Communications, 2018, 17(6): 4051–4063. doi: 10.1109/TWC.2018.2819653 GE Xiaohu, HUANG Xi, WANG Yuming, et al. Energy-efficiency optimization for MIMO-OFDM mobile multimedia communication systems with QoS constraints[J]. IEEE Transactions on Vehicular Technology, 2014, 63(5): 2127–2138. doi: 10.1109/TVT.2014.2310773 LIN Xiang, GE Xiaohu, WANG Chengxiang, et al. Energy efficiency evaluation of cellular networks based on spatial distributions of traffic load and power consumption[J]. IEEE Transactions on Wireless Communications, 2013, 12(3): 961–973. doi: 10.1109/TWC.2013.011713.112157 张广驰, 曾志超, 崔苗, 等. 无线供电混合多址接入网络的资源分配[J]. 电子与信息学报, 2018, 40(12): 3013–3019.ZHANG Guangchi, ZENG Zhichao, CUI Miao, et al. Resource allocation for wireless powered hybrid multiple access networks[J]. Journal of Electronics &Information Technology, 2018, 40(12): 3013–3019. YU Wei and LUI R. Dual methods for nonconvex spectrum optimization of multicarrier systems[J]. IEEE Transactions on Communications, 2006, 54(7): 1310–1322. doi: 10.1109/tcomm.2006.877962 BOYD S and VANDENBERGHE L. Convex Optimization[M]. Cambridge UK: Cambridge University Press, 2009: 561–615. -
下载:
图(7)
计量
- 文章访问数: 2312
- HTML全文浏览量: 1087
- PDF下载量: 73
- 被引次数: 0
