基于NOMA技术的PLC-VLC用户配对和子载波分配方法

doi:10.12263/DZXB.20210176

电子学报 ›› 2021, Vol. 49 ›› Issue (10): 1952-1959.DOI: 10.12263/DZXB.20210176

所属专题：无线光通信及其组网技术

• 无线光通信及其组网技术 • 上一篇下一篇

基于NOMA技术的PLC-VLC用户配对和子载波分配方法

刘焕淋¹, 黄美娜¹, 陈勇², 杨健¹, 黄冰川¹, 张彤¹

^1.重庆邮电大学通信与信息工程学院，重庆 400065
^2.重庆邮电大学自动化学院，重庆 400065

收稿日期:2021-01-27 修回日期:2021-07-11 出版日期:2021-11-29
- 作者简介:
- 刘焕淋女，1970年生,重庆人.重庆邮电大学教授、博士和硕士生导师.主要研究方向为光通信技术和网络. E-mail:liuhl@cqupt.edu.cn
  黄美娜女，1994年生，广东潮州人.重庆邮电大学硕士研究生.主要研究方向为可见光通信技术.
  陈勇男，1963年生，重庆人.重庆邮电大学教授、硕士生导师.主要研究方向为自动控制和光信号处理.
- 基金资助:
- 国家自然科学基金 (NSFC 51977021); 重庆市自然科学基金面上项目 (2019 jcyj-msxmX0613)

User Pairing and Subcarrier Allocation for PLC-VLC Based on NOMA Technology

LIU Huan-lin¹, HUANG Mei-na¹, CHEN Yong², YANG Jian¹, HUANG Bing-chuan¹, ZHANG Tong¹

^1.School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
^2.School of Automation, Chongqing University of Posts and Telecommunications, Chongqing 400065, China

Received:2021-01-27 Revised:2021-07-11 Online:2021-11-29 Published:2021-10-25
- Supported by:
- National Natural Science Foundation of China (NSFC 51977021); General Program of Natural Science Foundation of Chongqing Municipality, China (2019 jcyj-msxmX0613)

摘要/Abstract

摘要：

为了提高室内电力线通信和可见光通信（PLC-VLC）系统的吞吐量和用户体验的公平性，该文提出一种改进遗传算法优化用户配对联合子载波分配(IGA-JUPSA)方法.在IGA-JUPSA的用户配对阶段，设计了最优的非正交多址技术(NOMA)用户配对方法，提高PLC-VLC系统的吞吐量；在IGA-JUPSA 的子载波分配阶段，设计NOMA与正交多址技术结合的子载波分配策略，设计改进的遗传算法优化不同NOMA组的子载波分配，提高系统的吞吐量和用户体验的公平性.仿真结果表明，所提的用户配对和子载波联合方法可以提高PLC-VLC系统的吞吐量和用户体验的公平性.

关键词: PLC-VLC系统, NOMA, 子载波分配, 改进遗传算法, 系统吞吐量

Abstract:

For improving the throughput and the fairness of user experience of indoor power line communications-visible light communications (PLC-VLC) system, an improved genetic algorithm based joint user pairing and subcarrier allocation (IGA-JUPSA) method is proposed in the paper. In the user pairing stage, a method of optimal non-orthogonal multiple access (NOMA) user pairing is designed to improve the throughput of PLC-VLC system. During the process of subcarrier allocation, the subcarrier allocation scheme combined NOMA with orthogonal multiple access (OMA) is proposed, and the improved genetic algorithm is used to optimize the subcarrier allocation for different NOMA groups for improving the system throughput and user fairness. Simulation results show that the proposed IGA-JUPSA can improve the throughput of PLC-VLC cascaded system and the fairness experience of users.

Key words: PLC-VLC system, NOMA, sub-carrier allocation, improved genetic algorithm, system throughput

中图分类号:

TN929.11

刘焕淋, 黄美娜, 陈勇, 杨健, 黄冰川, 张彤. 基于NOMA技术的PLC-VLC用户配对和子载波分配方法[J]. 电子学报, 2021, 49(10): 1952-1959.

LIU Huan-lin, HUANG Mei-na, CHEN Yong, YANG Jian, HUANG Bing-chuan, ZHANG Tong. User Pairing and Subcarrier Allocation for PLC-VLC Based on NOMA Technology[J]. Acta Electronica Sinica, 2021, 49(10): 1952-1959.

图/表 6

图1 基于NOMA的PLC-VLC系统模型

表1 IGA-JUPSA算法仿真默认参数

参数	含义	数值
$Φ 1 / 2$	发射机半功率角	70^o
β	放大系数	1
P	每个LED发送功率	3W
B	VLC系统总带宽	30MHz
N_P	VLC子载波总数	128
φ _C	接收机视场角	90^o
N_popu	遗传算法种群规模	50
T_S（φ）	光滤波器增益	1.0
n	折射率	1.0
A_PD	检测器物理表面积	1.0cm²

表1 IGA-JUPSA算法仿真默认参数

参数	含义	数值
$Φ 1 / 2$	发射机半功率角	70^o
β	放大系数	1
P	每个LED发送功率	3W
B	VLC系统总带宽	30MHz
N_P	VLC子载波总数	128
φ _C	接收机视场角	90^o
N_popu	遗传算法种群规模	50
T_S（φ）	光滤波器增益	1.0
n	折射率	1.0
A_PD	检测器物理表面积	1.0cm²

表2 4种算法收敛性能对比

方法	收敛时的迭代次数	系统平均用户速率（Mbps）
IGA-JUPSA	52	60
GA-JUPSA	163	61.25
IGA-RUPSA	55	50
GA-RUPSA	168	50.5

图2 PLC-VLC用户公平性随用户数量变化情况

图3 PLC-VLC系统吞吐量随用户数量变化情况

图4 PLC-VLC系统满意用户比例随用户数量变化情况

参考文献 20

1	KhalidH, WarisF, AsifH M. Design of an integrated power line communication (PLC)-visible light communication system for data communication[J]. Lasers in Engineering, 2018, 40(1): 107－125.
2	雷新颖, 王成. 一种多孔径接收器的设计及其可见光通信系统[J]. 重庆邮电大学学报, 2021, 33(1): 59－66.
	LeiX Y, WangC. Design of amultiple bore diameter receiver and its visible communication system[J]. Journal of Chongqing University of Posts and Telecommunications, 2021, 33(1): 59－66. (in Chinese).
3	BolajiA G, ShongweT. BPSK-OFDM versus QFSK-OFDM in combating the effects of narrowband interference and impulsive noise in power line communication [A]. International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP)[C]. Budapest, Hungary: IEEE, 2018. 1－6.
4	LiuS C, YangF, SongJ, et al. An optimal interleaving scheme with maximum time-frequency diversity for PLC systems[J]. IEEE Transactions on Power Delivery, 2016, 31(3): 1007－1014.
5	BolajiA G, ShongweT. Performance comparison of modified BPSK-OFDM and QFSK-OFDM in PLC channel noise[J]. International Journal of Electronics and Telecommunications, 2020, 66(4): 499－605.
6	KomineT, NakagawaM. Integrated system of white LED visible-light communication and power-line communication[J]. IEEE Transactions on Consumer Electronics, 2003, 49(1): 71－79.
7	孙帮成, 丁文伯, 闫阳天, 等. PLC和VLC融合的车厢内宽带视频服务系统[J]. 电视技术, 2015, 39(11): 57－60.
	SunB C, DingW B, YanY T, et al. PLC and VLC integrated system for in-coach broadband video service[J]. Video Engineering, 2015, 39(11): 57－60. (in Chinese)
8	NdjiongueA R, ShongweT, FerreiraHC, et al. Cascaded PLC-VLC channel using OFDM and CSK techniques[A]. IEEE Global Communications Conference[C]. San Diego, USA: IEEE, 2015.1－6.
9	SongJ, DingW B, YangF, et al. An indoor broadband broadcasting system based on PLC and VLC[J]. IEEE Transactions on Broadcasting, 2015, 61(2): 299－308.
10	ChenM C, YouS H, WangY, et al. Performance analysis of pilot-based OFDM channel estimation for hybrid PLC&VLC system[A]. International Conference on Optical Communications and Networks[C]. Hangzhou, China: IEEE, 2017. 1－3.
11	MaH, MostafaA, LampeL, et al. Coordinated beamforming for downlink visible light communication networks[J]. IEEE Transactions on Communications, 2018, 66(8): 3571－3582.
12	KashefM, AbdallahM, Al-DhahirN, et al. On the impact of PLC backhauling in multi-user hybrid VLC/RF communication systems[A]. Global Communications Conference[C]. Washington DC, USA: IEEE, 2016. 1－6.
13	SunY, NgD W K, DingZ G, et al. Optimal joint power and subcarrier allocation for full-duplex multicarrier non-orthogonal multiple access systems[J]. IEEE Transactions on Communications, 2017, 65(3): 1077－1091.
14	Al-AbbasiZ Q, SoD K C. Resource allocation in non-orthogonal and hybrid multiple access system with proportional rate constraint[J]. IEEE Transactions on Wireless Communications, 2017, 16(10): 6309－6320.
15	TaoS, YuG, LiQ, et al. Strategy-based gain ratio power allocation in non-orthogonal multiple access for indoor visible light communication networks[J]. IEEE Access, 2019, 7(2): 15250－15261.
16	JanjuaM B, CostaD B D, ArslanH. User pairing and power allocation strategies for 3D VLC-NOMA systems [J]. IEEE Wireless Communication Letters, 2020, 9(6):866－870.
17	郝少伟, 李勇军, 赵尚弘, 等. 基于改进粒子群算法的多载波NOMA功率分配策略[J]. 电子学报, 2020, 48(10):139－146.
	HaoS W, LiY J, ZhaoS H, et al. Multicarrier NOMA power allocation strategy based on improved particle swarm optimization algorithm[J]. Acta Electronica Sinica, 2020, 48(10): 139－146. (in Chinese)
18	谢显中, 高龙龙, 卢华兵. VLC网络中兼顾QoS和公平性的协作子载波与功率分配算法[J]. 重庆邮电大学学报, 2021, 33(1): 7－17.
	XieX Z, GaoL L, LuH B. Coordinated subcarrier and power allocation algorithms considering both QoS and fairness for VLC networks[J]. Journal of Chongqing University of Posts and Telecommunications, 2021, 33(1): 7－17. (in Chinese)
19	李刚, 胡哲, 景小荣, 等. 基于改进梯度投影法的MIMO-NOMA系统迭代信号检测算法[J]. 重庆邮电大学学报, 2020, 32(4): 571－577.
	LiG, HuZ, JingX R, et al. Iterative signal detection algorithm for MIMO-NOMA system based on improved gradient projection method[J]. Journal of Chongqing University of Posts and Telecommunications, 2020, 32(4): 571－577. (in Chinese)
20	JaniM, GargP, GuptaA. Performance analysis of a mixed cooperative PLC－VLC system for indoor communication systems[J]. IEEE Systems Journal, 2019, 14(1): 469－476.

[1]	刘焕淋, 蒲欣, 陈勇, 黄美娜, 陈金林. 室内VLC-WiFi异构网络基于动态载波分配的干扰管理策略[J]. 电子学报, 2021, 49(10): 1920-1926.
[2]	张忠培;赵亚红;周世东. 多用户自适应调制及功率分配[J]. 电子学报, 2003, 31(2): 211-213.
[3]	李旭;宋俊德;宋梅. 智能多层计算机辅助频率规划系统设计与开发[J]. 电子学报, 2000, 28(2): 35-38.

基于NOMA技术的PLC-VLC用户配对和子载波分配方法

User Pairing and Subcarrier Allocation for PLC-VLC Based on NOMA Technology

RichHTML

PDF

可视化

摘要/Abstract

引用本文

使用本文

图/表 6

参考文献 20

相关文章 3

编辑推荐

Metrics