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几种LDPC码在无线光通信系统中的性能比较 被引量:4

Performance comparison for several kinds of LDPC codes in wireless optical communication system
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摘要 为了提高无线光通信系统的性能,文章研究了几种低密度校验码(LDPC)在无线光通信系统中的运用.MATLAB仿真结果表明,LDPC码能对弱湍流信道起到一定的抑制作用从而提高了通信系统的可靠性.构造这几种码时,在都未对其进行优化的情况下,弱湍流信道下的准循环LDPC(QC_LDPC)码的误码性能略差于Mackay随机LDCP码,优于π-旋转LDPC码,但QC_LDPC码和π-旋转LDPC码编码简单易于硬件实现,实用性更强. In order to improve the performance of the wireless optical communication system, the application of some kinds of LDPC (low density parity check) codes in the wireless optical communication system is examined. The MATLAB simulation method is used, showing that LDPC codes can restrain the weak turbulence channel to a certain extent, so as to improve reliability of the communication system. When constructing these LDPC codes, under the circumstances of not optimizing them, the BER (bit error rate) performance of the QC (quasi-cyclic)_LDPC code in weak turbulence channel is slightly lower than that of Mackay random LDPC code, and it is superior to π-rotation LDPC code. While the QC_LDPC code and π-rotation LDPC code are simple and easy to be implemented by hardware, therefore, they are more practical.
出处 《应用科技》 CAS 2013年第1期47-51,共5页 Applied Science and Technology
关键词 QC_LDPC码 π-旋转LDPC码 随机LDPC码 无线光通信 弱湍流信道 QC-LDPC code π-rotation LDPC code random LDPC code wireless optical communication weak turbulencechannel
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  • 1袁建国,叶文伟,毛幼菊.光通信系统中基于LDPC码的SFEC码型研究[J].光电子.激光,2009,20(11):1450-1453. 被引量:10
  • 2王丽黎,柯熙政,陈丽新.基于大气激光通信系统的实验测量研究[J].光散射学报,2005,17(4):378-383. 被引量:11
  • 3冯景锋,刘骏,周兴伟.国家标准GB20600-2006《数字电视地面广播传输系统帧结构、信道编码和调制》解读[J].广播与电视技术,2007,34(5):21-22. 被引量:32
  • 4B.J.Dixon,R.D.Pollard,S.Iezekiel.Orthogonal frequency-division multiplexing in wireless communication systems with multimode fiber feeds[J].IEEE Transactions on Microwave and Techniques,2001,49(8):1404-1409.
  • 5A.J.Lowery,L.Du,J.Armstrong.Orthogonal frequency division multiplexing for adaptive dispersion compensation in long haul WDM systems[C].Optical Fiber Communication Conference,2006,1-6:2753-2755.
  • 6Q.Pan,R.J.Green.Bit-error-rate performance of lightwave hybrid AM/OFDM systems with comparison with AM/QAM systems in the presence of clipping impulse noise[J].IEEE Photon.Technol.Lett.,1996,8(2):278-280.
  • 7Zhu Xiaoming,J.M.Kahn.Free-space optical communication through atmospheric turbulence channels[J].IEEE Trans.Commun.,2002,50(8):1293-1300.
  • 8Ruizhong Rao.Genetal optical scintillation in turbulent atmosphere[J].Chin.Opt.Lett.,2008,6(8):547-549.
  • 9K.Kiasaleh.Performance of APD-based,PPM free-space optical communication systems in atmospheric turbulence[J].IEEE Trans.Commun.,2005,53(9):1455-1461.
  • 10A.Ohhashi,T.Ohtsuki.Regular low-density parity-check (LDPC) code with normalized and UMP BP-based algorithms on fast Rayleigh fading channel[C].Vehicular Technology Conference,2004,4:2520-2524.

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