光纤网络信道拥塞下的调制与均衡处理
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摘要
针对传统的光纤网络在拥塞下,最优信道选取方法一直存在误码和输出比特序列失真较大等问题,提出基于空间码元激光调制的光纤网络最优信道选取方法。采用子载波激光调制方法对光纤网络信道进行调制,通过自适应反馈均衡器进行信道干扰抑制和均衡处理,结合信道响应参数,实现对光纤网络最优信道的选取。仿真结果表明,采用该方法进行光纤网络最优信道选取,其选取精度高,且输出信道放大性能较好,码元峰峰值较高,说明该方法能光纤网络的误码率低,输出数据的保真性高。
For the traditional optical network under the congestion,the optimal channel selection methods have some problems such as large error and distortion of the output bit sequence. Therefore,an optimal channel selection method of optical network is proposed based on space element laser modulation. Using subcarrier laser modulation method for optical network channel. Suppress and equalize the interferences of channel through adaptive feedback equalizer. Combining with the channel response parameters to realize the channel selection of fiber optic network. The simulation results show that,this method has high precision,the channel output amplification performance is good,element peak value is high which shows that the method has low bit error rate and high output data fidelity.
For the traditional optical network under the congestion,the optimal channel selection methods have some problems such as large error and distortion of the output bit sequence. Therefore,an optimal channel selection method of optical network is proposed based on space element laser modulation. Using subcarrier laser modulation method for optical network channel. Suppress and equalize the interferences of channel through adaptive feedback equalizer. Combining with the channel response parameters to realize the channel selection of fiber optic network. The simulation results show that,this method has high precision,the channel output amplification performance is good,element peak value is high which shows that the method has low bit error rate and high output data fidelity.
引文
[1]WILLNER A E,HUANG H,YAN Y,et al.Optical communications using orbital angular momentum beams[J].Advances in Optics and Photonics,2015,7(1):66-106.
[2]LONG S,KHALIGHI M A,WOLF M,et al.Investigating channel frequency selectivity in indoor visible-light communication systems[J].Let.Optoelectronics,2016,10(3):80-88.
[3]ABE M,SEKI H,KOWA M,et al.High average power,diffraction-limited picosecond output from a sapphire facecooled Nd:YVO4 slab amplifier[J].Opt.Soc.Am.B,2015,32(4):714-718.
[4]宋凯楠,王彪,唐超颖.基于激光测距扫描的室内定位方法研究[J].激光与红外,2016,46(8):938-942.
[5]李枫,耿超,李新阳,等.基于SPGD算法的自适应光纤耦合器阵列技术研究[J].红外与激光工程,2015,44(7):2156-2161.
[6]郎磊,贾倩.室内可见光蜂窝网络信道特性研究[J].光电子·激光,2015,1:81-85.
[7]王磊,郝士琦,张岱,等.大气激光通信中自适应调制编码技术的模式选择阈值[J].激光与光电子学进展,2017,2:111-117.
[8]LI X,ZHANG R,HANZO L.Cooperative Load Balancing in Hybrid Visible Light Communications and Wi Fi[J].IEEE Transactions on Communications,2015,63(4):1319-1329.
[9]张彤,范研,赵谦.大气激光通信系统中频域反卷积抑制乘性噪声的研究[J].中国激光,2015,42(5):270-275.
[10]RAZA I,JABEEN S,CHAUDHRY S R,et al.Optical wireless channel characterization for indoor visible light communications[J].American Journal of Gastroenterology,2015,96(5):1327-1329.
[11]陈荷荷.基于部分冗余合并的OBS网络冲突解决机制[J].激光技术,2016,40(4):531-535.
[12]王玉文,董志伟,周逊,等.THz固定无线链路在大气中的特性[J].强激光与粒子束,2016,28(3):160-166.
[13]孙韩,郝士琦,张岱,等.基于蚁群算法的大气激光通信中低密度奇偶校验码的盲识别[J].光学学报,2016(9):70-75.
[14]BAO X,YU G,DAI J,ET AL.Li-Fi:Light fidelity-a survey[J].Wireless Networks,2015,21(6):1879-1889.
[15]NIXON M,FRIDMAN M,RONEN E,et al.Synchronized Cluster Formation in Coupled Laser Networks[J].Physical Review Letters,2013,106(22):508-514.
[16]MOLIN R,MSW S P.Controlling Synchronization in Large Laser Networks[J].Physical Review Letters,2014,108(21):214101.
[17]BRUNNER D,FISCHER I.Reconfigurable semiconductor laser networks based on diffractive coupling.[J].Optics Letters,2015,40(16):3854-7.
[2]LONG S,KHALIGHI M A,WOLF M,et al.Investigating channel frequency selectivity in indoor visible-light communication systems[J].Let.Optoelectronics,2016,10(3):80-88.
[3]ABE M,SEKI H,KOWA M,et al.High average power,diffraction-limited picosecond output from a sapphire facecooled Nd:YVO4 slab amplifier[J].Opt.Soc.Am.B,2015,32(4):714-718.
[4]宋凯楠,王彪,唐超颖.基于激光测距扫描的室内定位方法研究[J].激光与红外,2016,46(8):938-942.
[5]李枫,耿超,李新阳,等.基于SPGD算法的自适应光纤耦合器阵列技术研究[J].红外与激光工程,2015,44(7):2156-2161.
[6]郎磊,贾倩.室内可见光蜂窝网络信道特性研究[J].光电子·激光,2015,1:81-85.
[7]王磊,郝士琦,张岱,等.大气激光通信中自适应调制编码技术的模式选择阈值[J].激光与光电子学进展,2017,2:111-117.
[8]LI X,ZHANG R,HANZO L.Cooperative Load Balancing in Hybrid Visible Light Communications and Wi Fi[J].IEEE Transactions on Communications,2015,63(4):1319-1329.
[9]张彤,范研,赵谦.大气激光通信系统中频域反卷积抑制乘性噪声的研究[J].中国激光,2015,42(5):270-275.
[10]RAZA I,JABEEN S,CHAUDHRY S R,et al.Optical wireless channel characterization for indoor visible light communications[J].American Journal of Gastroenterology,2015,96(5):1327-1329.
[11]陈荷荷.基于部分冗余合并的OBS网络冲突解决机制[J].激光技术,2016,40(4):531-535.
[12]王玉文,董志伟,周逊,等.THz固定无线链路在大气中的特性[J].强激光与粒子束,2016,28(3):160-166.
[13]孙韩,郝士琦,张岱,等.基于蚁群算法的大气激光通信中低密度奇偶校验码的盲识别[J].光学学报,2016(9):70-75.
[14]BAO X,YU G,DAI J,ET AL.Li-Fi:Light fidelity-a survey[J].Wireless Networks,2015,21(6):1879-1889.
[15]NIXON M,FRIDMAN M,RONEN E,et al.Synchronized Cluster Formation in Coupled Laser Networks[J].Physical Review Letters,2013,106(22):508-514.
[16]MOLIN R,MSW S P.Controlling Synchronization in Large Laser Networks[J].Physical Review Letters,2014,108(21):214101.
[17]BRUNNER D,FISCHER I.Reconfigurable semiconductor laser networks based on diffractive coupling.[J].Optics Letters,2015,40(16):3854-7.