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Estimates of the Carrier Frequency of the Signal received by the Satellite Communication system in Package mode
2020
International Journal of Advanced Trends in Computer Science and Engineering
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Development of functional dependencies and, based on them, development of the procedure for estimating the carrier frequency of the signal received by the satellite communication system in a continuous ...
Functional dependences are determined, based on them a rule is formed and an algorithm for estimating the carrier frequency of a signal received by a satellite communication system in a packet mode according ...
signal-to-noise ratio per information symbol in a given range of signal-to-noise ratio. ...
doi:10.30534/ijatcse/2020/115932020
fatcat:i7cqvbdwgjcijjqkxom72imije
Design and Implementation of Real Time Noise Cancellation System based on Spectral Subtraction Method
2013
Procedia Technology - Elsevier
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In this paper, a real-time digital signal noise cancellation system is designed based on Spectral Subtraction Method. ...
The system cancels the noise in frequency domain by estimating the noise energy spectral from a noisy input. ...
The plotted data in time domain are presented as follows ( Fig. 7(a) to 7(e)): Signal to noise ratio (SNR) of input system (SNR i ) is calculated based on ratio of the power of the pure signal sample ...
doi:10.1016/j.protcy.2013.12.287
fatcat:qqmphnlpnbg5xlii3kl5pql7sy
Speech Processing System Using a Noise Reduction Neural Network Based on FFT Spectrums
2012
Journal of information and communication convergence engineering
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The effectiveness of the proposed system is experimentally confirmed based on measuring the signal-to-noise ratio (SNR). ...
This paper proposes a speech processing system based on a model of the human auditory system and a noise reduction neural network with fast Fourier transform (FFT) amplitude and phase spectrums for noise ...
[4] , speech intelligibility was improved when choosing four different lengths of filter for the pitch period according to four different input signal-to-noise ratios (SNRs). ...
doi:10.6109/jicce.2012.10.2.162
fatcat:wsfdygahabgahpvgfompqize7a
On the architecture and performance of an FFT-based spread-spectrum downlink RAKE receiver
2001
IEEE Transactions on Vehicular Technology
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We assume a pilot signal is transmitted with data signals for channel sounding. ...
Index Terms-Fast Fourier transform (FFT)-based matched filtering, RAKE receivers, spread spectrum. ...
Otherwise, the signal-to-noise ratio (SNR) of the estimated channel frequency response will degrade and the system performance will deteriorate. ...
doi:10.1109/25.917929
fatcat:7moozpmwdncpnbksvvnlkb5zoq
A High Precision DSSS Carrier Acquisition Algorithm Based on Coefficient Interpolation of FFT
2017
DEStech Transactions on Engineering and Technology Research
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In the DSSS-based communication and measurement systems, we need to detect and capture the carrier Doppler frequency of received signal preliminarily, deliver it to the carrier tracking loop, and then ...
obtain the accurate estimation of echo Doppler frequency, in order to demodulate and dispread the received signal correctly. ...
has a certain value for the carrier signal estimation of the direct sequence spread spectrum system Learn from meaning. ...
doi:10.12783/dtetr/oect2017/16116
fatcat:jxg3ta4eyjhivlwo32rwfrkm6e
A Robust GPS Signal Acquisition Technique Using Discrete Wavelet Transform
2016
Procedia Computer Science
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Acquisition in GPS system is primary and important step to calculate the code phase in Pseudo Random Noise (PRN) code and Doppler shift in carrier frequency of received GPS signal, which is used for continuous ...
A novel Global Positioning System (GPS) signal acquisition scheme based on Discrete Wavelet Transform (DWT) is proposed to improve acquisition performance. ...
An acquisition algorithm based on DWT is proposed for a robust GPS signal acquisition system and to facilitate its implementation. ...
doi:10.1016/j.procs.2016.05.254
fatcat:h4z74ssxefh7nmv3ajnejrwb5q
Frequency estimation for short realization of radar signals II. Results of tests
2014
Contemporary Engineerng Sciences
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In numerical simulation estimation of random error are carried out depend on value of delay and value of signal to noise ratio. 1784 Mikhail Ronkin et al. ...
The paper is devoted to the problem of short time delays measurement in radar systems. ...
on signal to noise ratio. ...
doi:10.12988/ces.2014.410197
fatcat:ofacyvv66fgk3iays376quqrvq
Blind frequency offset estimation based on phase rotation for coherent transceiver
2020
IEEE Photonics Journal
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Conventional fast Fourier transform based frequency offset estimation (FFT-FOE) algorithm is suitable for QPSK and 8/16/64QAM signals. ...
The bit error ratio (BER) of a 28 Gbaud 32-QAM signal is lower than the soft-decision forward-error correction (SD-FEC) limit with the optical signal-to-noise ratio (OSNR) of 22 dB. ...
The results show that the bit error ratio (BER) of a 28 Gbaud 32-QAM signal is lower than the soft-decision forward-error correction (SD-FEC) limit with the optical signal-to-noise ratio (OSNR) of 22 dB ...
doi:10.1109/jphot.2020.2983086
fatcat:f5b5sam7zbaqnjr3dujxhiu3oa
Frequency Analysis of Acoustic Data Using Multiple-Measurement Sparse Bayesian Learning
2021
Sensors
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low signal to noise ratio (ESPRIT and RMUSIC). ...
Many algorithms, such as fast Fourier transform (FFT), estimate signal parameters via rotational invariance techniques (ESPRIT), and multiple signal classification (RMUSIC) has been proposed for frequency ...
signal to noise ratio (SNR) [7] [8] [9] [10] . ...
doi:10.3390/s21175827
pmid:34502716
fatcat:jdkha3l2yvd4pcxi2wvh6m4g2i
On Oversampling-Based Signal Detection
2019
International Journal of Wireless Information Networks
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2019 pre-print arXiv:1907.13505v1 fatcat:e6dqgnnnozc2zfizqsak74qu2q
Based on the noise model of a software-defined radio dongle, we address the problem of robust signal detection in the presence of noise power uncertainty and non-flat noise power spectral density (PSD) ...
The study shows that the best performance is provided by a noise-uncertainty immune energy detector (ED) and, for the colored noise case, by tests that match the PSD of the receiver noise. ...
On Oversampling-Based Signal Detection 3
System model The detection task is to distinguish the presence or absence of any signal in the observed band. ...
doi:10.1007/s10776-019-00444-9
fatcat:ylfluc2orndbnez43oer553x5y
Speech Enhancement by Spectral Subtraction Method
2014
International Journal of Computer Applications
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Speech processing and communication systems are to apply effective noise reduction techniques in order to extract the desired speech signal from its corrupted speech signal. ...
This paper presents the performance of spectral subtraction algorithm is evaluate of a speech by signal to noise ratio value. ...
FFT is finest for speech enhancement. Noisy signal obtain and send to noise estimation block. This noise estimation block is used for calculate the overall noise in the original speech. ...
doi:10.5120/16858-6739
fatcat:sekwhgthhrcnna6levlirix7py
The Application Wavelet Transform Algorithm in Testing ADC Effective Number of Bits
2013
International Journal of Computer Science & Information Technology (IJCSIT)
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In classical testing of Effective Number of Bits, testing is based on signal to noise components ratio (SNR), whose coefficients are driven via frequency domain (Fourier Transform) of ADC's output signal ...
In evaluating Analog to Digital Convertors, many parameters are checked for performance and error rate. One of these parameters is the device Effective Number of Bits. ...
ACKNOWLEDGEMENTS The authors are grateful to Applied Science University (ASU), Amman -Jordan, for the financial support grated to cover the publication fee of this paper research articles. ...
doi:10.5121/ijcsit.2013.5512
fatcat:gkyr2jffujau7gtwwp3fb7gff4
On Training Targets for Supervised Speech Separation
2014
IEEE/ACM Transactions on Audio Speech and Language Processing
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Our results in various test conditions reveal that the two ratio mask targets, the IRM and the FFT-MASK, outperform the other targets in terms of objective intelligibility and quality metrics. ...
In addition, we find that masking based targets, in general, are significantly better than spectral envelope based targets. ...
Signal processing based methods usually work reasonably well in relatively high signal-to-noise ratio (SNR) conditions. ...
doi:10.1109/taslp.2014.2352935
pmid:25599083
pmcid:PMC4293540
fatcat:tpkwq5bmdncnhkduzlpy7mk3tq
A Novel Method Based on Cyclic Spectral Analysis about Carrier Frequency Estimation in the UAV Data Chain
2012
Advanced Engineering Forum
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We emphasis a computer simulation method based on the time-smoothing FFT accumulation method and use this method to verify cyclic spectral analysis is still effective to estimate the carrier frequency ...
ratio (SNR) signal and the phase lock loop (PLL) using for carrier extraction will performance serious decline or loss locks. ...
But when the signal is a low signal-to-noise ratio signal, the phase lock loop for carrier extraction performances serious decline or loss locks. ...
doi:10.4028/www.scientific.net/aef.6-7.215
fatcat:hoson2ybb5hljpttskvrrkqk7q
Analytical model for optical wireless OFDM system with digital signal restoration
2012
2012 IEEE Globecom Workshops
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In the system receiver a post-detection digital signal restoration is applied in an iterative manner in order to compensate for the effect of clipping noise and improve the system performance. ...
Keywords-Optical wireless communication, orthogonal frequency division multiplexing, peak-to-average power ratio, clipping noise, bit-error-ratio. I. ...
EFFECTIVE SIGNAL TO NOISE RATIO AND CLIPPING NOISE IN THE SYSTEM WITH SIGNAL RESTORATION An accurate analytical model for the system performance evaluation can be developed by introducing an effective ...
doi:10.1109/glocomw.2012.6477753
dblp:conf/globecom/Vanin12
fatcat:fxwxmvlgnzcbndvavd2bcpql3a
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