程广鹏,杨玮

• 1:北京信息科技大学信息与通信工程学院

摘要(Abstract)：

针对可见光通信（visible light communication, VLC）系统中用户分布动态变化及非理想信道状态信息（channel state information, CSI）反馈带来的性能退化问题，对两用户协作非正交多址接入（non-orthogonal multiple access, NOMA）VLC系统进行了研究。建立了基于远端用户位置分布的信道增益概率密度函数模型，并推导了系统误比特概率（bit error probability, BEP）的解析表达式。在此基础上，结合最大比合并（maximal ratio combining, MRC）技术，对协作与非协作系统性能进行了对比分析。仿真结果表明：随信噪比增加，采用MRC的协作系统能够显著提升系统性能，并有效降低BEP；在对比的L-脉冲位置调制（pulse position modulation, PPM）和开关键控（on-off keying,OOK）调制方式中，8-PPM表现最佳，其次为4-PPM与OOK，而2-PPM性能最差；系统性能随外环半径减小而改善，说明外环参数对动态分布用户的覆盖性能影响更为显著；此外，非理想CSI会导致误码率上升，验证了精确信道估计的重要性。所建立的动态信道模型和协作机制为NOMA-VLC系统在智能家居与工业物联网中的应用提供了理论支撑。

关键词(KeyWords)： 可见光通信;非正交多址接入;协作通信;信道状态信息;误比特概率

Abstract:

Keywords:

基金项目(Foundation): 企事业单位委托项目“基于可见光通信的V2X系统模拟与分析软件”

作者(Author): 程广鹏,杨玮

DOI: 10.16508/j.cnki.11-5866/n.2026.01.013

参考文献(References)：

• [1]SUN S Y, YANG F, SONG J,et al. Joint resource management for intelligent reflecting surface-aided visible light communications[J]. IEEE Transactions on Wireless Communications,2022,21(8):6508-6522.
• [2]SUN S Y,YANG F,SONG J,et al. Optimization on multiuser physical layer security of intelligent reflecting surface-aided VLC[J]. IEEE Wireless Communications Letters,2022,11(7):1344-1348.
• [3]KIM J B,LEE I H. Capacity analysis of cooperative relaying systems using non-orthogonal multiple access[J]. IEEE Communications Letters,2015,19(11):1949-1952.
• [4]DING Z G,PENG M G,POOR H V. Cooperative nonorthogonal multiple access in 5G systems[J]. IEEE Communications Letters,2015,19(8):1462-1465.
• [5]KIM J B,LEE I H. Non-orthogonal multiple access in coordinated direct and relay transmission[J]. IEEE Communications Letters,2015,19(11):2037-2040.
• [6]迟楠，徐增熠，施剑阳，等.面向6G的可见光通信：关键技术与未来展望（特邀）[J].光学学报，2025,45(13):1306003.CHI N,XU Z Y,SHI J Y,et al. 6G oriented visible light communication:key technologies and prospectives(invited)[J].Acta Optica Sinica,2025,45(13):1306003.(in Chinese)
• [7]KIZILIRMAK R C,ROWELL C R,UYSAL M. Non-orthogonal multiple access(NOMA)for indoor visible light communications[C]//2015 4th International Workshop on Optical Wireless Communications(IWOW). New York, USA:IEEE,2015:98-101.
• [8]赵寅清，李学华，杨玮.接收机朝向随机的NOMA-VLC系统性能[J].北京信息科技大学学报（自然科学版），2024,39(3):41-47.ZHAO Y Q,LI X H,YANG W. Performance of NOMA-VLC systems with random receiver orientation[J]. Journal of Beijing Information Science&Technology University(Science and Technology Edition),2024,39(3):41-47.(in Chinese)
• [9]RANJHA B,KAVEHRAD M. Hybrid asymmetrically clipped OFDM-based IM/DD optical wireless system[J]. Journal of Optical Communications and Networking,2014,6(4):387-396.
• [10]MARSHOUD H,KAPINAS V M,KARAGIANNIDIS G K,et al.Non-orthogonal multiple access for visible light communications[J]. IEEE Photonics Technology Letters,2016,28(1):51-54.
• [11]YIN L,POPOOLA W O,WU X P,et al. Performance evaluation of non-orthogonal multiple access in visible light communication[J]. IEEE Transactions on Communications,2016,64(12):5162-5175.
• [12]MARSHOUD H,MUHAIDAT S,SOFOTASIOS P C,et al. Optical non-orthogonal multiple access for visible light communication[J]. IEEE Wireless Communications,2018,25(2):82-88.
• [13]ALMOHIMMAH E M,ALRESHEEDI M T. Error analysis of NOMA-based VLC systems with higher order modulation schemes[J]. IEEE Access,2020,8:2792-2803.
• [14]DAI L L,WANG B C,YUAN Y F,et al. Non-orthogonal multiple access for 5G:solutions,challenges,opportunities,and future research trends[J]. IEEE Communications Magazine,2015,53(9):74-81.
• [15]DING Z G,YANG Z,FAN P Z,et al. On the performance of nonorthogonal multiple access in 5G systems with randomly deployed users[J]. IEEE Signal Processing Letters,2014,21(12):1501-1505.
• [16]MEN J J,GE J H. Non-orthogonal multiple access for multipleantenna relaying networks[J]. IEEE Communications Letters,2015,19(10):1686-1689.
• [17]LANEMAN J N,TSE D N C,WORNELL G W. Cooperative diversity in wireless networks:efficient protocols and outage behavior[J]. IEEE Transactions on Information Theory,2004,50(12):3062-3080.
• [18]DWIVEDY P,DIXIT V,KUMAR A. NOMA cooperative VLC systems:design and performance analysis with OOK and L-PPM modulation[J]. Applied Optics,2023,62(25):6639-6651.
• [19]DWIVEDY P,DIXIT V,KUMAR A. Performance analysis of cooperative VLC with L-PPM modulation and diversity combining strategies under perfect and imperfect CSI for IoT devices[J]. IEEE Sensors Journal,2025,25(12):23028-23036.
• [20]C??SPEDES M M,GUZM??N B G,JIM??NEZ V P G. Lights and shadows:a comprehensive survey on cooperative and precoding schemes to overcome LOS blockage and interference in indoor VLC[J]. Sensors,2021,21(3):861.
• [21]DIXIT V,KUMAR A. Performance analysis of non-line of sight visible light communication systems[J]. Optics Communications,2020,459:125008.
• [22]KOMINE T,NAKAGAWA M. Fundamental analysis for visiblelight communication system using LED lights[J]. IEEE Transactions on Consumer Electronics,2004,50(1):100-107.
• [23]ZENG L B,O′BRIEN D C,MINH H L,et al. High data rate multiple input multiple output(MIMO)optical wireless communications using white LED lighting[J]. IEEE Journal on Selected Areas in Communications,2009,27(9):1654-1662.
• [24]ARFAOUI M A,SOLTANI M D,TAVAKKOLNIA I,et al.Measurements-based channel models for indoor LiFi systems[J]. IEEE Transactions on Wireless Communications,2021,20(2):827-842.
• [25]DIXIT V,KUMAR A. Performance analysis of indoor visible light communication system with angle diversity transmitter[C]//2020 IEEE 4th Conference on Information&Communication Technology(CICT). New York, USA:IEEE,2020:1-5.
• [26]JANI M,GARG P,GUPTA A. Performance analysis of a cooperative PLC/VLC system with multiple access points for indoor broadcasting[J]. AEU-International Journal of Electronics and Communications,2019,103:64-73.
• [27]CHERAGHI M, DARMANI Y. Total transmit power minimization with physical layer security in multiuser peer-topeer two-way relay networks[J]. AEU-International Journal of Electronics and Communications,2020,124:153317.
• [28]DIXIT V,KUMAR A. An exact BER analysis of NOMA-VLC system with imperfect SIC and CSI[J]. AEU-International Journal of Electronics and Communications,2021,138:153864.
• [29]DIXIT V ,KUMAR A. Error analysis of L-PPM modulated MIMO based multi-user NOMA-VLC system with perfect and imperfect SIC[J]. Applied Optics ,2022 ,61(4):858-867.
• [30]PAL R K,DASH S P,JOSHI S,et al. Channel estimation and performance analysis of a wide-FOV visible light communication system with random receiver orientation and location[J]. IEEE Transactions on Wireless Communications,2023,22(3):1964-1979.
• [31]BIAGI M,HASSAN N B,WERFLI K,et al. Analysis and demonstration of quasi trace orthogonal space time block coding for visible light communications[J]. IEEE Access,2020,8:77164-77170.
• [32]A??IR T T,S??NMEZ M. The modulation classification methods in PPM-VLC systems[J]. Optical and Quantum Electronics,2023,55(3):223.
• [33]BARRY J R,LEE E A,MESSERSCHMITT D G. Digital communication[M]. Berlin:Springer Science&Business Media,2012.
• [34]LIU X D,CHEN Z Z,WANG Y H,et al. Robust artificial noiseaided beamforming for a secure MISO-NOMA visible light communication system[J]. China Communications,2020,17(11):42-53.