| 大气光通信中Turbo码的最大后验概率译码 |
| |
| 引用本文： | 高宠,韩琦琦,马晶,谭立英,于思源,潘锋.大气光通信中Turbo码的最大后验概率译码[J].光电工程,2006,33(4):63-67. |
| |
| 作者姓名： | 高宠 韩琦琦 马晶 谭立英 于思源 潘锋 |
| |
| 作者单位： | 哈尔滨工业大学,可调谐激光技术国家级重点实验室,黑龙江,哈尔滨,150001;哈尔滨工业大学,可调谐激光技术国家级重点实验室,黑龙江,哈尔滨,150001;哈尔滨工业大学,可调谐激光技术国家级重点实验室,黑龙江,哈尔滨,150001;哈尔滨工业大学,可调谐激光技术国家级重点实验室,黑龙江,哈尔滨,150001;哈尔滨工业大学,可调谐激光技术国家级重点实验室,黑龙江,哈尔滨,150001;哈尔滨工业大学,可调谐激光技术国家级重点实验室,黑龙江,哈尔滨,150001 |
| |
| 摘 要： | 为了精确实现对空间物体的测量,提出了利用线激光、单CCD相机、小孔成像与激光面约束模型的激光线测量法。引进三维信息已知的标准阶梯块作为激光面约束的标定块;由计算机控制摄像头对实物连续拍摄和实时处理,提取激光线上的像素坐标;利用建立的模型将二维坐标转换成三维坐标,再以点云的形式重构出物体,实现三维自动测量。实践中检测系统测量精度可达到0.05mm。
|
| 关 键 词： | 大气光通信 Turbo码 MAP译码 可靠性因子 |
| 文章编号： | 1003-501X(2006)04-0063-05 |
| 收稿时间： | 2005-05-08 |
| 修稿时间： | 2005-11-14 |
MAP decoding of Turbo code in atmospheric optical communication |
| |
| GAO Chong,HAN Qi-qi,MA Jing,TAN Li-ying,YU Si-yuan,PAN Feng.MAP decoding of Turbo code in atmospheric optical communication[J].Opto-Electronic Engineering,2006,33(4):63-67. |
| |
| Authors: | GAO Chong HAN Qi-qi MA Jing TAN Li-ying YU Si-yuan PAN Feng |
| |
| Affiliation: | National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150001, China |
| |
| Abstract: | Based on the estimated channel state information, a new iterative maximum posterior probability (MAP) decoding algorithm of Turbo coded BPPM is proposed to improve the performance of atmospheric optical communication with long burst error by atmospheric scintillation. And the channel reliability factor and its estimation are presented. Finally, bit error rate of Turbo code with the proposed algorithm is presented and simulated. Compared with the traditional algorithm without estimation of channel state information, the proposed algorithm improves the error performance of Turbo code. |
| |
| Keywords: | Atmospheric optical communication Turbo code MAP decoding Channel reliability factor |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
