Direct Sequence Spread Spectrum System Noise and Interference Immunity Analysis

Tikhomirov, Andrey; Omelvanchuk, Elena; Semenova, Anastasia; Smirnov, Alexander; Bakhtin, Alexander

doi:10.1109/ewdts.2018.8524661

Cited by 5 publications

(4 citation statements)

References 4 publications

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“…Values in the range of 0.890-0.903 are considered for the term in the square brackets in Equation (10). Evidently, the power spectral density of the wideband interference falling into the low-pass filter is changed to approximately 0.9 times the original value after the despreading process.…”

Section: Wideband Interferencementioning

confidence: 99%

Analytical Technique Leveraging Processing Gain for Evaluating the Anti-Jamming Potential of Underwater Acoustic Direct Sequence Spread Spectrum Communication Systems

Wang,

Zhou

2023

Symmetry

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This study proposes an analytical technique underpinned by processing gain to evaluate the anti-jamming potential of an underwater acoustic direct-sequence spread-spectrum (DSSS) communication system that employs a short-period pseudo-noise (PN) sequence. The processing gain comes from the symmetry of the coding, which provides a mechanism for separating desired signals from unwanted ones, and the apparent randomness of the coding, which suppresses interference and noise in the system. The robustness of such a system against wideband interference, partial-band jamming, and single-frequency interference is emulated. Outcomes suggest that, in comparison to a standard binary phase shift keying (BPSK) system, the DSSS system’s ability to resist wideband interference is limited, with only a marginal increase in immunity performance of approximately 0.5 dB. Contrarily, it suppresses partial-band jamming effectively, with the suppression level dependent on the interference bandwidth and its relative position concerning the signal carrier frequency. The influence of single-frequency interference on system performance depends similarly on its relative location relative to the signal carrier frequency. In all situations where the interference frequency offset is an integer multiple of the bit bandwidth, the system exhibits the worst performance when the frequency offset equals the bit bandwidth. Upon comparing resistance levels to identical power interferences targeted at the signal carrier frequency, our system demonstrates optimal resilience to single-frequency interference. In concordance with the empirical findings, the simulated results substantiate both the effectiveness and practicability of the proposed analytical method based on processing gain. Subsequently, this study contributes a novel perspective for evaluating the anti-jamming potential of DSSS systems.

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Section: Wideband Interferencementioning

confidence: 99%

Analytical Technique Leveraging Processing Gain for Evaluating the Anti-Jamming Potential of Underwater Acoustic Direct Sequence Spread Spectrum Communication Systems

Wang,

Zhou

2023

Symmetry

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“…Cross-correlation properties shown in the Figure 2. Where this code differs from the rest of the other code in this regard, and this distinguishes it in the protection of information [22], [23], as well as in terms of complexity and in the transmission of one of the most secure signals in the communication system.…”

Section: Gold Sequencementioning

confidence: 99%

“…This technique is based on the spreading of the signal on larger frequencies and on a wide range and this is done on the side of the transmitter, then spreading it on the side of the receiver. What we mentioned earlier is in order to obtain the protection of our information in communications systems, due to the increasing growth in the number of users, as well as creating a safe environment for our knowledge and privacy in the communications system [8]- [12].…”

Section: Introductionmentioning

confidence: 99%

Implementing and designing a secure information system based on the DSSS gold sequence using MATLAB

Kaittan

Mohammed

2021

Bulletin EEI

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During study of directly spread spectrum systems, noted that this system uses many types of code to spread data through communication process. There are different types of code sequences available with good correlation properties, they often use pesudo sequence for spreading which is to be less efficient in protecting information from the breaches that attack the communications systems from penetration. In this article gold sequence will use, which is consider better and more complex than the rest of the code sequence (pseudo-noise (PN) sequence, barker code, hadamard code, and others) in terms of the security aspect of the information, thereby it is difficult to detect the information sent in addition to that it is used in code-division multiple access. Design and implement difficult code to protect information in the communication system carried out here by using MATLAB, for sending a binary data and color photo to be sure that this system is working properly with few errors and better information protection than the rest of the other code that is used in direct sequence spread spectrum.

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“…Through the studies previous, which we will look it now, such as AndreyTikhomirov et al [9]. In this work, the direct serial spread spectrum system immunity analysis and the interference immunity analysis of the direct spread spectrum systems were analyzed in order to discover the best structure for the terrestrial mobile communication receiver taking into account the energy consumption restrictions.…”

Section: Introductionmentioning

confidence: 99%

Implementation of DSSS system of image using MATLAB

Mohammed

Kaittan

2020

IJEECS

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In direct sequence spread spectrum systems, pseudo sequence random (PN) are used to spreading data bits. There are various type of PN sequences are available with good correlation properties, on mostly are generating pn by linear feedback shift register (LFSR). Will examine in this paper we describe spreading binary random and spreading the image As well as studying probability bit error rate of DSSS system with change of the channel (Add white Gaussian noise channel, Rayleigh fading channel, Rician fading channel). Our study will be performed using MATLAB. Terms of completed my articles in building system developed to security transmitter and receiver the information of theft against communication digital system talk as well as the increase of data rate information. Was this design a way process of his used in applications military and have a major role also in the most applications requiring protect high for many information binary data and image. So that the system designed as fits practice and prevent the overlap the outside after it has become send signals in communication system exhibition penetration and Intentional attacks or other breaches.

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Direct Sequence Spread Spectrum System Noise and Interference Immunity Analysis

Cited by 5 publications

References 4 publications

Analytical Technique Leveraging Processing Gain for Evaluating the Anti-Jamming Potential of Underwater Acoustic Direct Sequence Spread Spectrum Communication Systems

Analytical Technique Leveraging Processing Gain for Evaluating the Anti-Jamming Potential of Underwater Acoustic Direct Sequence Spread Spectrum Communication Systems

Implementing and designing a secure information system based on the DSSS gold sequence using MATLAB

Implementation of DSSS system of image using MATLAB

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