Results 11 to 20 of about 6,742,680 (324)

Novel direct sequence spread spectrum communication method [PDF]

open access: yesTongxin xuebao, 2023
In response to the problem of limited performance and low spectral efficiency in complex multipath environments of traditional direct sequence spread spectrum communication, a cyclic prefix (CP) block transmission structure spread spectrum system with a ...
Fanglin GU   +5 more
doaj   +4 more sources

Novel method of spread spectrum communication [PDF]

open access: yesTongxin xuebao, 2013
As the bandwidth efficiency of traditional spread spectrum modulation is quite low,a novel spread spectrum communication method,which uses the relative position of the spread spectrum modulation symbol to carry information was presented,and the method ...
Jia-fang KANG   +5 more
doaj   +4 more sources

Interstellar communication: The case for spread spectrum [PDF]

open access: yesActa Astronautica, 2012
Spread spectrum, widely employed in modern digital wireless terrestrial radio systems, chooses a signal with a noise-like character and much higher bandwidth than necessary. This paper advocates spread spectrum modulation for interstellar communication, motivated by robust immunity to radio-frequency interference (RFI) of technological origin in the ...
Messerschmitt, David G
core   +6 more sources

Implementation of Direct Sequence Spread Spectrum Communication System Using FPGA [PDF]

open access: yes, 2017
— This paper presents the designed and implementation of spread spectrum technology for data transfer to overcome the interference problems associated with narrow band, very high frequency and ultra high frequency data transfer systems.
R. Prabhu   +3 more
semanticscholar   +2 more sources

M-ary nonlinear sine chirp spread spectrum for underwater acoustic communication based on virtual time-reversal mirror method

open access: yesEURASIP Journal on Wireless Communications and Networking, 2021
Linear chirp spread spectrum technique is widely used in underwater acoustic communication because of their resilience to high multipath and Doppler shift.
Song-Zuo Liu   +5 more
semanticscholar   +1 more source

Electromagnetic Interference of Spread-Spectrum Modulated Power Converters in G3-PLC Power Line Communication Systems

open access: yesIEEE Letters on Electromagnetic Compatibility Practice and Applications, 2021
The impact of spread-spectrum techniques used to mitigate EMI from power converters on Power Line Communication (PLC) systems is studied in this paper. A buck converter, utilizing a Random Carrier Frequency Modulation with Fixed Duty cycle (RCFMFD) based
Waseem El Sayed   +5 more
semanticscholar   +1 more source

Blind Estimation of Spreading Sequence and Data Bits in Direct-Sequence Spread Spectrum Communication Systems

open access: yesIEEE Access, 2020
At the transmitter of a Direct Sequence Spread Spectrum (DSSS) communication system, data bits are spread using a spreading sequence. To demodulate the transmitted data bits, the received signal should be de-spread using the same spreading sequence ...
Hoesang Choi, Hichan Moon
semanticscholar   +1 more source

Modulation Parameter Estimation of LFM Interference for Direct Sequence Spread Spectrum Communication System in Alpha-Stable Noise

open access: yesIEEE Systems Journal, 2020
The linear frequency modulation (LFM) interference is one of the typical broadband interferences in direct sequence spread spectrum (DSSS) communication system.
Mingqian Liu   +5 more
semanticscholar   +1 more source

A direct-sequence spread-spectrum communication system for integrated sensor microsystems [PDF]

open access: yes, 2005
Some of the most important challenges in health-care technologies have been identified to be development of noninvasive systems and miniaturization.
ARSLAN, T   +5 more
core   +1 more source

Analysis and comparison of code index modulation and multi-ary spread spectrum

open access: yesDianzi Jishu Yingyong, 2018
In the current anti-jamming communication, the spread spectrum communication has been studied deeply with the advantages of strong anti-jamming ability and good security performance.
Feng Sheng   +4 more
doaj   +1 more source

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