中国开放科研知识云: 检索

Encoding and decoding communications based on perfect vector optical vortex arrays 期刊论文
JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2022, 卷号: 55, 期号: 43
作者: Long, Zixu; Hu, Huajie; Ma, Xin; Tai, Yuping; Li, Xinzhong

收藏 | 浏览/下载：11/0 | 提交时间：2022/10/10

optical vortex array vector optical field optical encoding and decoding communication

A novel concatenated coding scheme combined LDPC and VBLAST for FSO links 会议论文
Chengdu, China, June 6, 2015 - June 7, 2015
作者: Wang, Huiqin; Wang, Fen; Cao, Minghua

收藏 | 浏览/下载：11/0 | 提交时间：2020/11/15

Bells Bit error rate Concatenated codes Data communication equipment Fading channels Forward error correction Iterative decoding Mean square error Monte Carlo methods Optical communication Turbo codes Belief propagation decoding algorithms Concatenated coding Free Space Optical communication Free-space optical Low density parity check Low-density parity-check (LDPC) codes Minimum mean square errors (MMSE) Vertical Bell Labs layered space time

A Novel Concatenated Coding Scheme Combined LDPC and VBLAST for FSO Links 会议论文
作者: Wang, Huiqin; Wang, Fen; Cao, Minghua

收藏 | 浏览/下载：3/0 | 提交时间：2019/11/15

Free-space Optical concatenated coding scheme Low Density Parity Check vertical Bell Labs layered space-time

基于数字信号处理机的水下光通信收发系统设计及分析 期刊论文
中国激光, 2013, 卷号: 40, 期号: 3, 页码: 305003
作者: 胡秀寒; 周田华; 贺岩; 朱小磊; 陈卫标

收藏 | 浏览/下载：19/0 | 提交时间：2016/11/28

光盘数字化测试方法的研究与实现 学位论文
硕士: 中国科学院上海光学精密机械研究所, 2011
作者: 王国华

收藏 | 浏览/下载：12/0 | 提交时间：2016/11/28

光盘，数字化测试，电参数，误码，DSV

基于等效相移光栅的光码分多址编/解码实验 期刊论文
2010, 2010
燕萌; 姚敏玉; 张洪明; 张鋆; 彭越; 王华; 鲁涛; YAN Meng; YAO Min-yu; ZHANG Hong-ming; ZHANG Jun; PENG Yue; WANG Hua; LU Tao

收藏 | 浏览/下载：3/0

基于等效相移光栅的双用户光码分多址系统 期刊论文
2010, 2010
燕萌; 姚敏玉; 张洪明; 章壮前; 李王哲; 吴庆伟; YAN Meng; YAO Min-yu; ZHANG Hong-ming; ZHANG Zhuang-qian; LI Wang-zhe; WU Qing-wei

收藏 | 浏览/下载：4/0

基于超结构长周期光纤光栅的OCDMA编解码器 期刊论文
2010, 2010
燕萌; 姚敏玉; 张洪明; Yan Meng; Yao Minyu; Zhang Hongming

收藏 | 浏览/下载：3/0

OCDMA encoding/decoding experiments based on superstructured fiber Bragg grating with equivalent phase shift 期刊论文
2010, 2010
Yan Meng; Yao Min-yu; Zhang Hong-ming; Zhang Jun; Peng Yue; Wang Hua; Lu Tao

收藏 | 浏览/下载：6/0

Transceiving protocol designc for a free space optical communication system (EI CONFERENCE) 会议论文
2008 International Conference on Optical Instruments and Technology: Optical Systems and Optoelectronic Instruments, November 16, 2008 - November 19, 2008, Beijing, China
Hualong W.; Wanxin S.; Zhongbao X.

收藏 | 浏览/下载：41/0 | 提交时间：2013/03/25

A new transceiving protocol is demonstrated for a Free Space Optical (FSO) communication system and it's discussed in two parts: the transmitting protocol and the receiving protocol. During the discussion of these two parts the cooperation of them is also discussed. Different from wired communication an FSO system modulates the data on a narrow beam of laser transmitting through the free space or the atmosphere and the protocol presented in this paper is mainly optimized for terrestrial Free Space Optical links in which the signal channel of the system is mainly the atmosphere. Due to the complex composition and activity of the atmosphere this signal channel brings in great influence on the transmitting laser in it for example the absorption and scattering of the atmosphere molecules and aerosols the scintillation of received laser power caused by the turbulence of the atmosphere all of which results in a much higher Bit Error Rate (BER) of the communication system. Thus in designing a protocol for an FSO system more effort should be taken in the encoding of the data stream the synchronization of the data stream error checking and exception handling. The main function of the transmitting protocol includes interfacing the outer input data with a parallel port buffering the input data encoding the input data stream serializing the parallel data and output the serialized data. It also has an output management unit to manage the activity of each part of the transmitting protocol. The main function of the receiving protocol includes filtering and synchronizing the input serial data stream paralleling the serial data stream decoding the input data error checking exception handling and interfacing the outer receiver with a parallel port. The entire transceiving protocol could be programmed into a single FPGA chip to improve system integrity and reduce the system cost. The presented protocol could be taken as "protocol transparent" for outer interfaces meaning that when interfacing the presented system to an outer system you don't have to consider what protocol the outer system transceiving data stream is under for example the TCP/IP protocol or anything else in the case that its I/O interface is a parallel port. Simulation and final experiment prove that the protocol presented is working fine at a certain bit rate scale. 2009 SPIE.

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