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1. 西安理工大学自动化与信息工程学院,陕西 西安 710048
2. 西南科技大学特殊环境机器人技术四川省重点实验室,四川 绵阳 621010
[ "赵太飞(1978- ),男,河南浚县人,博士,西安理工大学教授,主要研究方向为紫外光散射通信技术、路由技术、网络抗毁性技术、物联网技术等。" ]
[ "刘龙飞(1994- ),男,陕西宝鸡人,西安理工大学硕士生,主要研究方向为无线紫外光散射通信中的码间干扰抑制。" ]
[ "王晶(1993- ),女,陕西宝鸡人,西安理工大学硕士生,主要研究方向为无线紫外光散射通信中的信道特性。" ]
[ "杨黎洋(1991- ),男,河南平舆人,西安理工大学硕士生,主要研究方向为无线紫外光散射通信中的微弱信号检测。" ]
网络出版日期:2019-03,
纸质出版日期:2019-03-25
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赵太飞, 刘龙飞, 王晶, 等. 无线紫外光散射通信中的改进CMA-FSE盲均衡算法[J]. 通信学报, 2019,40(3):102-108.
Taifei ZHAO, Longfei LIU, Jing WANG, et al. Improved CMA-FSE blind equalization algorithm for wireless ultraviolet communication[J]. Journal on communications, 2019, 40(3): 102-108.
赵太飞, 刘龙飞, 王晶, 等. 无线紫外光散射通信中的改进CMA-FSE盲均衡算法[J]. 通信学报, 2019,40(3):102-108. DOI: 10.11959/j.issn.1000-436x.2019065.
Taifei ZHAO, Longfei LIU, Jing WANG, et al. Improved CMA-FSE blind equalization algorithm for wireless ultraviolet communication[J]. Journal on communications, 2019, 40(3): 102-108. DOI: 10.11959/j.issn.1000-436x.2019065.
无线紫外光散射通信系统具有严重的码间干扰和信号衰减问题,针对该问题,提出了一种基于信噪比估计的改进常模分数间隔均衡器(CMA-FSE)算法。该算法将分数间隔均衡器(FSE)和常模算法(CMA)结合起来对无线紫外光信道进行盲均衡,使用接收信号的均方值衡量输入信噪比来确定最佳迭代步长,保证均衡算法快速收敛。仿真结果表明,改进CMA-FSE算法能在各种信噪比下快速收敛,并有效抑制码间干扰,改善系统误码率性能。与现有算法相比,改进算法信道跟踪和噪声抑制能力更强。
There are serious intersymbol interference (ISI) and signal attenuation in wireless ultraviolet communication system.Aiming at this problem
an improved constant modulus fractionally spaced equalizer (CMA-FSE) based on signal-to-noise (SNR) estimation was proposed.The algorithm combined the fractionally spaced equalizer (FSE) and constant modulus algorithm (CMA) for blind equalization of wireless ultraviolet channels.The input SNR was measured by the mean square value of the received signal
and it was used to determine the best iterative step to ensure the convergence of the equalization algorithm.Simulation results show that the improved CMA-FSE algorithm can converge rapidly under various SNR
and it can effectively suppress ISI and improve the BER performance of the system.Compared with the existing algorithms
the improved algorithm is more useful in channel tracking and noise suppression.
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