
浏览全部资源
扫码关注微信
a.南京邮电大学 电子与光学工程,微电子学院,南京 210023
b.南京邮电大学 通信与信息工程学院,南京 210023
洪文昕,实验师。E-mail:hongwenxin@njupt.edu.cn
纸质出版日期:2021-12-10,
收稿日期:2021-03-09,
扫 描 看 全 文
洪文昕, 李天屿, 陈建飞. 可见光通信DCO-OFDM系统资源分配算法研究[J]. 光通信研究, 2021,(6):19-22,44.
HONG Wen-xin, LI Tian-yu, CHEN Jian-fei. Research on Resource Allocation Algorithm of Visible Light Communication DCO-OFDM System[J]. Study on Optical Communications, 2021,(6):19-22,44.
洪文昕, 李天屿, 陈建飞. 可见光通信DCO-OFDM系统资源分配算法研究[J]. 光通信研究, 2021,(6):19-22,44. DOI: 10.13756/j.gtxyj.2021.06.003.
HONG Wen-xin, LI Tian-yu, CHEN Jian-fei. Research on Resource Allocation Algorithm of Visible Light Communication DCO-OFDM System[J]. Study on Optical Communications, 2021,(6):19-22,44. DOI: 10.13756/j.gtxyj.2021.06.003.
针对室内可见光通信(VLC)直流偏置光正交频分复用(DCO-OFDM)系统存在的低信道利用率问题,文章对该系统的信道资源和比特资源进行了优化分配研究。首先介绍了DCO-OFDM系统的信号发射端模型和系统的信道利用率计算,并按照两步算法的思路依次分析了信道资源分配和比特资源分配问题,进而提出了自适应动态资源分配算法,该算法能够根据信道幅度频率响应来灵活分配子信道,并为各信道自适应选择满足服务质量要求的最高阶正交振幅调制(QAM)调制方式。仿真结果表明,相比于传统固定分配算法,该自适应资源分配算法可显著提升室内VLC DCO-OFDM系统的信道利用率。
In view of the problem of low channel utilization in the Direct Current-biased Optical Orthogonal Frequency Division Multiplexing (DCO-OFDM) system for indoor Visible Light Communication (VLC)
the channel and bit resources of the system are optimally allocated. This paper first introduces the signal transmitter model of the DCO-OFDM system and the calculation of the channel utilization of the system. Then we analyze the problem of channel resource allocation and bit resource allocation in sequence according to the two-step algorithm. Finally
we propose an adaptive dynamic resource allocation algorithm. The algorithm can flexibly allocate sub-channels according to the channel amplitude and frequency response
and adaptively select the highest order Quadrature Amplitude Modulation (QAM) modulation method for each channel to meet service quality requirements. The results show that
compared with the traditional fixed allocation algorithm
this adaptive resource allocation algorithm can significantly improve the channel utilization of indoor VLC DCO-OFDM system.
室内可见光通信直流偏置光正交频分复用系统自适应动态资源分配算法信道利用率
indoor VLCDCO-OFDM systemadaptive dynamic resource allocation algorithmchannel utilization
Carruthers J B, Kahn J M.Multiple-subcarrier Modulation for Nondirected Wireless Infrared Communication[J].IEEE Journal on Selected Areas in Commun-i cations, 1996, 14(3): 538-546.
Gonzalez O, Perez-Jimenez R, Rodriguez S, et al. OFDM over Indoor Wireless Optical Channel[J].IEE Proceedings. Part J, Optoelectronics, 2005, 152(4): 199-204.
李伟.可见光通信组网架构与资源分配机制研究[D].北京: 北京邮电大学, 2018.
白向伟, 李青, 唐燕群.低复杂度室内超密集可见光通信网络频谱资源分配算法[J].光学学报, 2019, 39(9): 100-109.
徐文艳, 于宏毅, 杨森.以用户为中心的可见光通信协作传输中训练资源分配算法[J].激光与光电子学进展, 2020, 57(1): 76-83.
徐文艳, 唐涛, 段田东, 等.可见光通信网络节能资源分配策略研究[J].光学精密工程, 2020, 28(7): 1577-1587.
贾科军.基于光OFDM及其相关技术的室内可见光通信研究[M].成都: 西南交通大学出版社, 2019.
龚宓.可见光通信OFDM调制解调方案研究[D].南京: 东南大学, 2018.
陈然.室内照明通信系统的数学模型及其仿真[D].南京: 南京邮电大学, 2013.
沈振民, 蓝天, 王云, 等.基于LED灯的室内可见光通信系统仿真分析[J].红外与激光工程, 2015, 44(8): 2496-2500.
周凯福, 程伟, 窦立超, 等.一种低复杂度的OFDM自适应比特功率分配方法[J].空军预警学院学报, 2019, 33(3): 212-215.
0
浏览量
186
下载量
0
CSCD
关联资源
相关文章
相关作者
相关机构
鄂公网安备 42011202002092号