搜索结果: 1-15 共查到“工学 FEC”相关记录24条 . 查询时间(0.069 秒)
The International Atomic Energy Agency (IAEA) fosters the exchange of scientific and technical results in nuclear fusion research through its series of Fusion Energy Conferences. The 25th IAEA Fusion ...
Transmission of 96×100Gb/s with 23% Super-FEC Overhead over 11,680km, using Optical Spectral Engineering
Transmission Super-FEC Overhead Optical Spectral Engineering
2015/5/20
We transmit 96 PDM-QPSK channels at 100Gb/s over 11,680km, matching the best capacity × distance product reported, but with C-band-only EDFAs. 2.7b/s/Hz spectral density is obtained, despite 23% super...
Progress in Soft-Decision FEC
Soft-Decision FEC
2015/5/18
We discuss the practical implementation of LDPC codes in soft-decision FEC for 100 Gb/s digital coherent systems. The question of the definition of net coding gain for differential QPSK used to avoid ...
一种基于FEC-MDC的多用户码流快速分割算法
多描述编码 前向纠错 码流分割 多用户
2013/8/20
基于前向纠错的多描述编码（FEC-MDC）是一种在包丢失严重的信道中传输可分级图像和视频数据的有效方法。本文针对单一信源多用户的网络应用模型，研究了在描述数N固定的情况下，根据各信道传输码率的不同，通过调整发送包的长度L实现最佳码流传输的问题，提出了一种码流快速优化分割的改进算法。该算法基于已计算出的参考信道码流分割方案，在期望失真最小的准则下，首先通过在各个目标码率的邻域进行搜索计算，将搜索域分...
RSOA-based 10G WDM PON using FEC and MLSE Equalizers
Fiber optics links subsystems Semiconductor optical amplifiers
2015/6/10
Achieving the 10Gbit/s transmission in RSOA-based WDM PON systems is one of the important challenges because of its strict modulation bandwidth. This paper describes various state-of-the-art technique...
A Triple-Concatenated FEC using Soft-Decision Decoding for 100 Gb/s Optical Transmission
Optical communications
2015/6/8
We propose a novel triple-concatenated forward error correction for 100Gb/s transmission. Simulation shows that a net coding gain of 10.8dB is obtained by a soft-decision LPDC code concatenated with t...
Soft Decision FEC for 100G Transport Systems
Fiber optics communications Optical communications
2015/6/8
A practical implementation of soft decision based FEC for 100G transport systems is discussed. The keys are a stronger coding gain using triple-concatenated FEC and a multi-lane distribution architect...
Continuously-Interleaved BCH (CI-BCH) FEC delivers best in class NECG for 40G and 100G metro applications
Integrated optoelectronic circuits Fiber optics links subsystems Fiber optics communications
2015/6/5
We provide 40G OTU3 performance results for Continuously-Interleaved concatenated BCH (CI-BCH) FEC, demonstrating best-in-class performance for a 7% overhead hard-decision FEC and offers option to tra...
无线传感器网络自适应链路层FEC控制策略
无线传感器网络 Kalman滤波 自适应链路层前向纠错 能量分析
2010/8/30
提出一种适用于无线传感器网络的自适应链路层FEC控制策略。该策略基于Kalman滤波器预测当前的网络状态，在数据链路层采用FEC控制机制，根据FEC能耗分析的自身特性自适应地调整FEC参数n，以便改善无线传感器网络的通信性能，并建立单跳无线传感器网络模型和能量模型。数学分析和仿真验证表明，该策略能够有效地提高无线传感器网络数据传输的可靠性，降低无线传感器网络的能量消耗。
An Analytical Model for Optimum Byte-Level and Packet-Level FEC Assignment Using Buffer Dynamics
Analytical Model Optimum Byte-Level Packet-Level FEC Assignment Buffer Dynamics
2009/9/4
This letter presents an analytical model that jointly exploits the buffer dynamics of both the sending and receiving nodes to find the optimum number of byte-level and packet-level forward error corre...
Low-MAC FEC controller for JPEG2000 image transmission over IEEE 802.15.4
FEC IEEE 802.15.4 JPEG2000 low-MAC
2010/2/2
In this paper, we propose the low-MAC FEC controller
for practical implementation of JPEG2000 image transmission using
IEEE 802.15.4. The proposed low-MAC FEC controller has very
small HW size and ...
一种用于T-DMB系统IP业务传输的GSE-FEC方案
地面数字多媒体广播 通用流封装 RS码
2009/8/28
该文采用通用流封装GSE来完成地面数字多媒体广播(T-DMB)系统的IP业务的传输，提出了一种改进的GSE-FEC方案。其中设计了一种可提供帧重构信息以及错误位置信息的改进的GSE封装(IGSE)，进一步提出了基于IGSE的带擦除译码方案IGE，用于GSE-FEC方案的译码部分, 较好地提高了GSE-FEC的性能。仿真结果表明，IGE与基于非带擦除(NE)以及基于现有GSE封装的带擦除(GE)RS...
Kalman滤波的自适应链路层FEC控制策略
跨层设计 Kalman滤波 自适应链路层FEC
2009/7/24
无线网络动态的信道特性、高误码率和带宽有限等特点，使得在无线环境下为实时流媒体传输提供QoS保证面临更大的挑战。提出一种用于无线实时流媒体传输的自适应链路层FEC控制策略，以显著提高接收方的播放质量。该策略采用跨层设计的方法，基于Kalman滤波器预测当前的网络状态，考虑物理带宽限制和GOP可解码帧数的特性自适应地调整FEC参数N；另一方面，在应用层采用自适应FEC策略，在视频源数据和冗余数据之间...
Efficient Interleaving of FEC Codewords for Optical PSK Systems
Efficient Interleaving FEC Codewords Optical PSK Systems
2015/7/17
Differential encoding is required for phase modulation optical transmission systems but leads to higher bit error rate. We propose a construction of the codeword of the forward error correction allowi...
Comparison of Current FPGA Technology:Case Study Implementing FEC for the 100G Optical Transport Network
Current FPGA Technology Optical Transport Network
2015/7/15
This case study examines two high performance FEC algorithms implemented in a single state of the art FPGA for the 100G optical network.