弱湍流下Turbo码编码数字脉冲间隔调制差错性能分析

朱银兵; 王红星; 张磊; 张铁英

中国激光, 2007, 34 (9): 1245, 网络出版: 2007-10-17

弱湍流下Turbo码编码数字脉冲间隔调制差错性能分析

Analysis of Error Performance for Turbo Coded Digital Pulse Interval Modulation under Weak Turbulence

论文大纲

朱银兵 ^1,2,*王红星 ²张磊 ²张铁英 ²

作者单位

¹ 海军工程大学导航工程系, 湖北武汉 430033

² 海军航空工程学院电子信息工程系, 山东烟台 264001

光通信无线光通信 Turbo码湍流误码率 optical communication optical wireless communication Turbo code turbulence bit error rate

摘要

数字脉冲间隔调制(DPIM)的符号长度变化不固定,因而分析该调制方式在Turbo码编码下的差错性能存在困难。在建立分析模型和推导差错率的基础上,在弱湍流信道条件下仿真分析了Turbo码编码前后的系统差错性能,同时与高斯信道条件下的系统差错性能进行了比较。仿真分析结果表明,弱湍流信道条件下的系统差错性能不如高斯信道条件下的系统差错性能,但在两种信道条件下,引入Turbo码编码技术均可获得3～6 dB的编码增益,能够有效改善系统的差错性能,具有良好的**应用价值。

Abstract

The symbol length of digital pulse interval modulation (DPIM) is variable, so there are some difficulties to analyze error performances of Turbo coded DPIM. After the analytic model is set up and the error rate is derived, the system error performances of uncoded and Turbo coded DPIM are simulated and analyzed under weak turbulence channel, and the system error performances under Gaussian channel are simulated for comparison. The results show that error performances under weak turbulence channel are inferior to those under Gaussian channel, but for the two channels, introduction of Turbo code can get the code gain of 3～6 dB, which improves the error performance of system effectively and has applied value for military communications.

参考文献

[1] Jing Li, Murat Uysal. Optical wireless communications: system model, capacity and coding [C]. Proceeding of IEEE Vehicular Technological Conference (VTC fall), Orlando. FL, Oct. 2003. 168～172

[2] Wang Hongxing, Zhu Yinbing, Zhang Tieying et al.. Performance study of modulation for optical wireless communication [J]. Laser & Optoelectronics Progress, 2006, 43(6):38～41
王红星,朱银兵,张铁英等. 无线光通信调制方式性能分析[J]. 激光与光电子学进展, 2006, 43(6):38～41

[3] . T. H. David, D. R. Wisely, I. Weild et al.. Optical wireless: the story so far[J]. IEEE Communication Magazine, 1998, 36(12): 72-82.

[4] Jon Hamkins, Meera Srinivasan. Turbo codes for APD-detected PPM [C]. Proceedings of the Thirty-Sixth Annual Allerton Conference on Cummunication, Control and Computing, 1998, September. 29～38

[5] J. Hamkins. Performance of binary Turbo-coded 256-ary pulse-position modulation [R]. TMO Progress Report 42-138, 1999. 1～15

[6] . The performance of Turbo codes in optical PPM communication systems[J]. J. Guilin Institute of Electronic Technology, 2002, 22(3): 1-4.

[7] Xie Weiliang, Tang Junxiong. Analysis on characterization of atmospheric optical wireless communication system based on Turbo code [J]. Chinese J. Lasers, 2003, 30(9):835～838
谢伟良,汤俊雄. 基于Turbo码的大气无线光通信系统特性分析[J]. 中国激光, 2003, 30(9):835～838

[8] Tan Qinggui, Hu Yu. Atmospheric 2D-wireless optical code division multiple access communication system [J]. Chinese J. Lasers, 2006, 33(6):783～787
谭庆贵,胡渝. 二维大气无线光码分多址通信系统[J]. 中国激光, 2006, 33(6):783～787

[9] Xiang Jingsong, Hu Yu. Study on characteristics of distributed array receiver for satellite to ground laser communication [J]. Acta Optica Sinica, 2006, 26(9):1297～1302
向劲松,胡渝. 星地激光通信中分布式接收阵列的特性研究[J]. 光学学报, 2006, 26(9):1297～1302

[10] Naotake Yamamoto, Tomoaki Ohtsuki. Iterative MAP decoding of Turbo coded OOK and Turbo coded BPPM [C]. IEEE Global Telecommunications Conference (GLOBECOM′01), San Antonio, TX, Nov. 2001. (to appear):1913～1917

[11] . Sova-based iterative decoding of Turbo coded OOK and Turbo coden BPPM[J]. PIMRC, 2002, 1: 369-373.

朱银兵, 王红星, 张磊, 张铁英. 弱湍流下Turbo码编码数字脉冲间隔调制差错性能分析[J]. 中国激光, 2007, 34(9): 1245. 朱银兵, 王红星, 张磊, 张铁英. Analysis of Error Performance for Turbo Coded Digital Pulse Interval Modulation under Weak Turbulence[J]. Chinese Journal of Lasers, 2007, 34(9): 1245.

弱湍流下Turbo码编码数字脉冲间隔调制差错性能分析

关于本站 Cookie 的使用提示

全站搜索

弱湍流下Turbo码编码数字脉冲间隔调制差错性能分析

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索