Optimal Delay Equilibrium and Power Control Method for Two-user Non-orthogonal Multiple Access
-
摘要: 该文针对采用非正交多址接入(NOMA)技术的两用户单小区网络，考虑信道衰落的随机性和业务到达的动态性，以均衡用户排队时延并最大化网络总吞吐量为目标，构建了资源管理的随机优化问题。基于李雅普诺夫优化方法，推导了随机优化问题的最优解的闭式表达式，并提出一种低复杂度的联合时延均衡和功率控制的最优资源管理方法。对比了采用NOMA时的次优资源管理方法与采用时分多址接入方法时的最优资源管理方法，仿真结果表明所提方法能够显著提升网络性能。Abstract: A two-user single cell network employing Non-Orthogonal Multiple Access (NOMA) technique is studied. Accounting for time-varying channel fading and dynamic traffic arrival, a stochastic optimization issue is formulated, which aims to balance the queue delay of users and maximize the network total throughput. Based on Lyapunov optimization method, the closed-form optimal solution of the stochastic optimization issue is derived, and a low-complexity optimal delay equilibrium and power control method is proposed. The method is compared with a NOMA scheme using a non-optimal resource management method and a Time Division Multiple Access (TDMA) scheme with an optimal resource management method. Simulation results show that the proposed method can significantly improve network performance.
-
Key words:
- Non-Orthogonal Multiple Access (NOMA) /
- Delay equilibrium /
- Power control
-
GE Xiaohu, TU Song, MAO Guoqiang, et al. 5G ultra-dense cellular networks[J]. IEEE Wireless Communications, 2016, 23(1): 72–79. doi: 10.1109/MWC.2016.7422408 COVER T. Broadcast channels[J]. IEEE Transactions on Information Theory, 1972, 18(1): 2–14. doi: 10.1109/TIT.1972.1054727 TSE D and VISWANATH P. Fundamentals of Wireless Communication[M]. Cambridge: Cambridge University Press, 2005. BENJEBBOVU A, LI Anxin, SAITO Y, et al. System-level performance of downlink NOMA for future LTE enhancements[C]. 2013 IEEE Globecom Workshops (GC Wkshps), Atlanta, 2013: 66–70. OVIEDO J A and SADJADPOUR H R. A fair power allocation approach to NOMA in multiuser SISO systems[J]. IEEE Transactions on Vehicular Technology, 2017, 66(9): 7974–7985. doi: 10.1109/TVT.2017.2689000 WEI Zhiqiang, NG D W K, YUAN Jinhong, et al. Optimal resource allocation for power-efficient MC-NOMA with imperfect channel state information[J]. IEEE Transactions on Communications, 2017, 65(9): 3944–3961. doi: 10.1109/TCOMM.2017.2709301 FANG Fang, ZHANG Haijun, CHENG Julian, et al. Energy-efficient resource scheduling for NOMA systems with imperfect channel state information[C]. 2017 IEEE International Conference on Communications (ICC), Paris, 2017: 1–5. CHOI J. Joint rate and power allocation for NOMA with statistical CSI[J]. IEEE Transactions on Communications, 2017, 65(10): 4519–4528. doi: 10.1109/TCOMM.2017.2720176 ZHANG Yi, WANG Huiming, ZHENG Tongxing, et al. Energy-efficient transmission design in non-orthogonal multiple access[J]. IEEE Transactions on Vehicular Technology, 2017, 66(3): 2852–2857. doi: 10.1109/TVT.2016.2578949 LEI Lei, YUAN Di, and VÄRBRAND P. On power minimization for non-orthogonal multiple access (NOMA)[J]. IEEE Communications Letters, 2016, 20(12): 2458–2461. doi: 10.1109/LCOMM.2016.2606596 SHI Lanjie, LI Bo, and CHEN Haihua. Pairing and power allocation for downlink nonorthogonal multiple access systems[J]. IEEE Transactions on Vehicular Technology, 2017, 66(11): 10084–10091. doi: 10.1109/TVT.2017.2748145 XU Bingyu, CHEN Yue, CARRIÓN J R, et al. Resource allocation in energy-cooperation enabled two-tier NOMA HetNets toward green 5G[J]. IEEE Journal on Selected Areas in Communications, 2017, 35(12): 2758–2770. doi: 10.1109/JSAC.2017.2726398 ZHAO Jingjing, LIU Yuanwei, CHAI K K, et al. Resource allocation for non-orthogonal multiple access in heterogeneous networks[C]. 2017 IEEE International Conference on Communications (ICC), Paris, 2017: 1–6. MI Xiang, ZHAO Ming, XIAO Limin, et al. Delay-aware resource allocation and power control for device-to-device communications[C]. 2015 IEEE WCNC Wkshps, New Orleans, USA, 2015: 311–316. SHENG Min, LI Yuzhou, WANG Xijun, et al. Energy efficiency and delay tradeoff in device-to-device communications underlaying cellular networks[J]. IEEE Journal on Selected Areas in Communications, 2016, 34(1): 92–106. doi: 10.1109/JSAC.2015.2471395 LI Jiandong and HUANG Sheng. Delay-aware power control for D2D communication with successive interference cancellation and hybrid energy source[J]. IEEE Wireless Communications Letters, 2017, 6(6): 806–809. doi: 10.1109/LWC.2017.2744625 HUANG Sheng, LIANG Ben, and LI Jiandong. Distributed interference and delay aware design for D2D communication in large wireless networks with adaptive interference estimation[J]. IEEE Transactions on Wireless Communications, 2017, 16(6): 3924–3939. doi: 10.1109/TWC.2017.2690280 NEELY M J. Stochastic Network Optimization with Application to Communication and Queueing Systems[M]. San Rafael, CA: Morgan & Claypool, 2010. BOYD S and VANDENBERGHE L. Convex Optimization[M]. Cambridge, England: Cambridge University Press, 2004. -
下载:
图(3)
计量
- 文章访问数: 1990
- HTML全文浏览量: 711
- PDF下载量: 63
- 被引次数: 0
下载:
