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SPREAD-SPECTRUM: 作品数：13被引量：12H指数：2; 导出分析报告; 相关机构：东南大学北方工业大学更多>>; 相关期刊：《International Journal of Communications, Network and System Sciences》《Journal of Semiconductors》《International Journal of Technology Management》《通信学报》更多>>; 相关基金：国家自然科学基金国家高技术研究发展计划国家重点基础研究发展计划更多>>

Uniform Distribution Spread-spectrum Modulation Strategy for MMC to Reduce Conducted EMI and Switching Loss: 《Chinese Journal of Electrical Engineering》2022年第4期39-51,共13页Hui Liu Jianan Chen Dong Jiang Hong Li Xuejun Pei Wei Sun; Supported by the National Natural Science Fundation of China(U1866211)。; Modular multilevel converters(MMCs)have been widely used owing to their superior performance.However,the rapid switching of power electronics devices causes serious electromagnetic interference(EMI).There are a large ...; 关键词：MMC conducted EMI carrier phase shift uniform distribution

Modeling and Simulation of CDMA Codes in Scilab: 《International Journal of Communications, Network and System Sciences》2015年第7期274-281,共8页Mouhamed Fadel Diagana Serigne Bira Gueye; Prior to hardware implementation, simulation is an important step in the study of systems such as Direct Sequence Code Division Multiple Access (DS-CDMA). A useful technique is presented, allowing to model and simulat...; 关键词：Code Division Multiple Access (CDMA) Linear Feedback Shift Register (LFSR) Maximum Length SEQUENCE (MLS) SPREAD-SPECTRUM SCILAB Xcos Direct SEQUENCE Spread Spectrum (DSSS)

Blind Estimation of Long Code DSSS Signal Based On Subspace Tracking被引量：1: 《International Journal of Technology Management》2013年第1期80-83,共4页Ma Chao Zhang Limin Wang Jianxiong; Aiming at solving the blind estimation problem of dispreading spectrum sequence under low SNR, a spread-spectrum estimation algorithm based subspace tracking is studied in this paper. This method avoids the direct eig...; 关键词：DSSS blinding estimation of spread-spectrum waveform subspace tracking long code

Secure Spread-Spectrum Watermarking for Telemedicine Applications: 《Journal of Information Security》2011年第2期91-98,共8页Basant Kumar Harsh Vikram Singh Surya Pal Singh Anand Mohan; This paper presents a secure spread-spectrum watermarking algorithm for digital images in discrete wavelet transform (DWT) domain. The algorithm is applied for embedding watermarks like patient identification /source ...; 关键词：WATERMARKING SPREAD-SPECTRUM Discrete WAVELET TRANSFORM TELEMEDICINE

An improved method of generating the self-balanced chaotic spread-spectrum code: 《High Technology Letters》2011年第1期46-51,共6页安勇 Mu Rongzeng Cao Xiaolin Yan Yuepeng; An improved method of generating the self-balanced chaotic spread-spectrum code is presented. The chaotic-map pseudorandom sequence is used as the generated source. After a series of processing two-valued quantization...; 关键词：spread-spectnun communication chaotic map spread-spectrum code self-balanced

An advanced monolithic digitalized random carrier frequency spread-spectrum clock generator for EMI suppression被引量：1: 《Journal of Semiconductors》2010年第6期128-128,I0001,I0002,00129,00130,共3页郭海燕陈早张波李肇基; Project supported by the National Natural Science Foundation of China(No.60436030).; A novel monolithic digitalized random carrier frequency modulation spread-spectrum clock generator （RCF-SSCG） is proposed.In this design,the output frequency of the proposed RCF-SSCG changes with the intensity of th...; 关键词：Ransom carrier frequency modulation spread-spectrum clock generator class D amplifier electromagnetic interference

Asymptotic Analysis of Transmission Capacities for Overlaid Spread-Spectrum Wireless Networks被引量：1: 《China Communications》2010年第3期81-90,共10页Huarui Wu Di Li Changchuan Yin; supported in part by the China 863 Program grants 2007AA10Z235, 2007AA01Z179, 2006BAJ09B05, 2008BADA0B05;the NSFC grants 60972073, 60871042, 60872049, and 60971082;the China National Great Science Specifi c Project grant 2009ZX03003-011;the China 973 Program grant 2009CB320407; We study the transmission capacities of two coexisting spread-spectrum wireless networks (a primary network vs. a secondary network) that operate in the same geographic region and share the same spectrum. We defi ne t...; 关键词：transmission capacity ad hoc network spread spectrum stochastic geometry

Narrow-band interference excision in spread-spectrum systems using new N-sigma algorithm based on fuzzy threshold被引量：4: 《Journal of Systems Engineering and Electronics》2009年第1期20-26,共7页Feng Jining Wu Siliang Wang Ju; The key to narrow-band interference excision in frequency domain is to determine the excision thresh- old in direct-sequence spread-spectrum （DS-SS） systems. The excision threshold is a non-linear function related t...; 关键词：direct-sequence spread-spectrum systems adaptive frequency domain interference suppression fuzzyfunction GPS signal.

An improved hypothesis-feedback equalization algorithm for multicode direct-sequence spread-spectrum underwater communications: 《Frontiers of Electrical and Electronic Engineering in China》2007年第3期312-316,共5页HAN Jing HUANG Jianguo SHEN Xiaohong WANG Yu; In underwater acoustic communication,because the available bandwidth of the channel is severely limited,the direct-sequence spread-spectrum scheme can only be realized at low bit rates.To improve the transmission spee...; 关键词：sunderwater communication multicode spread spectrum hypothesis-feedback equalization parallel interference cancellation

Research of a newer spread-spectrum CDM telemetry communication system被引量：1: 《Journal of Systems Engineering and Electronics》2004年第4期516-519,共4页WangYongjian ZhouTingxian; In order to reduce the multiplexing interference and enhance the information data transmission efficiency of the common spread-spectrum telemetry commtmication system, based on the m-sequence' s parallel move equivale...

SPREAD-SPECTRUM