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Design of zero cross correlation variable weight codes for multimedia services based on magic square in SAC-OCDMA systems被引量：1
《Optoelectronics Letters》2021年第9期539-545,共7页LU Zhuo LU Ye LI Chuanqi 
supported by the Guangxi S&T Program(Nos.AB17292082 and AB18126025)。
A variable weight address code based on spectrum amplitude coding(SAC)is proposed for optical code division multiple access(OCDMA)networks to support different quality of service(Qo S)requirements of different service...
关键词：Gbit/s OCDMA WEIGHT 
A code-aided carrier synchronization algorithm based on improved nonbinary low-density parity-check codes
《Optoelectronics Letters》2016年第5期353-357,共5页白成林 程智慧 
supported by the State Key Program of National Natural Science Foundation of China(No.61431009);the Natural Science Foundation of Shandong Province in China(No.ZR2014AM018);the Shandong Tai-shan Scholar Research Fund
In order to further improve the carrier synchronization estimation range and accuracy at low signal-to-noise ratio(SNR), this paper proposes a code-aided carrier synchronization algorithm based on improved nonbinary l...
关键词：multiplexing aided parity offset coherent codes quadrature oscillator decoding symbol 
Fast prediction unit selection method for HEVC intra prediction based on salient regions被引量：3
《Optoelectronics Letters》2016年第4期316-320,共5页冯磊 戴明 赵春蕾 熊晶莹 
In order to reduce the computational complexity of the high efficiency video coding(HEVC) standard, a new algorithm for HEVC intra prediction, namely, fast prediction unit(PU) size selection method for HEVC based on s...
关键词：Codes (symbols) Computational complexity Computational efficiency Image coding Image segmentation Ion beams 
Classified-edge guided depth resampling for multi-view coding
《Optoelectronics Letters》2016年第1期77-80,共4页陆宇 周洋 陈华华 
supported by the National Natural Science Foundation of China(Nos.61401132 and 61372157);the Zhejiang Provincial Natural Science Foundation of China(No.LY12F01007)
A new depth resampling for multi-view coding is proposed in this paper.At first,the depth video is downsampled by median filtering before encoding.After decoding,the classified edges,including credible edge and probab...
关键词：Codes (symbols) DECODING Electric distortion Median filters Signal distortion 
A flexible receiver with fiber optical parametric amplifier in OCDMA-FSO communication system被引量：1
《Optoelectronics Letters》2014年第6期406-410,共5页夏民 苑金辉 桑新柱 尹霄丽 饶岚 余重秀 
supported by the National Key Basic Research Special Foundation(Nos.2010CB327605 and 2010CB328300);the National Natural Science Foundation of China(No.61307109);the National High Technology Research and Development Program of China(Nos.2013AA031501 and 2013AA013303);the Specialized Research Fund for the Doctoral Program of Higher Education(No.20120005120021);the Fundamental Research Funds for the Central Universities(No.2013RC1202)
A new receiver is proposed, which uses the fiber optical parametric amplifier(FOPA) in optical code division multiple access(OCDMA) over free space optic(FSO) communication system. The noise tolerance as the performan...
关键词：Code division multiple access Codes (symbols) Fiber amplifiers Optical fiber communication 
Construction and performance research on variablelength codes for multirate OCDMA multimedia networks
《Optoelectronics Letters》2014年第5期360-364,共5页李传起 杨梦婕 罗德俊 陆叶 孔一卜 张东闯 
supported by the University Nature Science Fund of Guangxi Province(No.2010 MS018);the Guilin Scientific Research and Technological Development Program Topics(No.20120104-18)
A new kind of variable-length codes with good correlation properties for the multirate asynchronous optical code division multiple access(OCDMA) multimedia networks is proposed, called non-repetition interval(NRI) cod...
关键词：Codes (symbols) Optical communication 
Performance study of an OFDM visible light communication system based on white LED array被引量：13
《Optoelectronics Letters》2011年第6期454-457,共4页田崇文 李艳婷 叶玮琳 全相印 宋占伟 郑传涛 
supported by the Innovation Fund for Technology Based Firms of Changchun of China (No.10ZC04)
By introducing orthogonal frequency division multiplexing （OFDM） technology, a visible light communication （VLC） system using a 5~5 white LED array is studied in this paper. The OFDM transmitter and receiver are m...
关键词：Bit error rate Codes (symbols) Communication systems Light Optical communication Orthogonal frequency division multiplexing Quadrature phase shift keying 
A newly combined code-designing method of two-dimen-sional signature codes for OCDMA system被引量：4
《Optoelectronics Letters》2009年第5期372-375,共4页李传起 夏青 张媛 周园园 
supported by the Natural Science Foundation of Jiangsu Province of China ( No. BK2008437);the Natural ScienceFoundation of Jiangsu Higher Education Institutions (No. 07KJB510066)
A new kind of two-dimensional optical orthogonal code named ESPC/OCS is constructed,which uses the extend square prime code (ESPC) for time spreading and the one-coincidence sequence(OCS) for wavelength hopping. The p...
关键词：OCDMA系统 代码 设计方法 签名 合并 二维光正交码 OCS 误码率 
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