Noisless coding of SAW RFID tags

2020 ◽  
Vol 49 (9) ◽  
pp. 22-29 ◽  
Author(s):  
V. O. Chebachev
Keyword(s):  
Noise Immunity ◽  
Signal To Noise Ratio ◽  
Rfid Tags ◽  
Gaussian Channel ◽  
Signal To Noise ◽  
Rfid Tag ◽  
Rfid Systems ◽  
Time Position ◽  
The Cost ◽  
Position Code

The article is devoted to SAW RFID systems. The time-position code of the RFID tags is considered. It is proposed to use ReedSolomon codes to increase the noise immunity of the system. The cost of noise immunity is the degradation of information capacity. The coding procedure is optimized for the case when receiving of tag codes is carried out in a correlation way. The procedure for obtaining code using the Matlab is described in detail. The decoding procedure for the RFID tag codes based on the Berlekamp-Massey algorithm is described. Such decoding procedure allows reading codes and correcting decoding errors in real time. A comparative analysis of the probability of a tag code reading error with using and without using the proposed coding in condition of a Gaussian channel for a fixed signal-to-noise ratio. The problem of a more general case of error-correcting coding in SAW RFID systems is viewed.

scholarly journals Comparative analysis of noise immunity of reception of nonlinear complex discrete signals with standard signals AFM-16 BPSK

Radiotekhnika ◽  
2020 ◽  
pp. 133-140
Author(s):  
S.G. Rassomakhin ◽  
A.A. Zamula ◽  
I.D. Gorbenko ◽  
Ho Tri Luc
Keyword(s):  
Comparative Analysis ◽  
Error Probability ◽  
Noise Immunity ◽  
Signal To Noise Ratio ◽  
Statistical Simulation ◽  
Gaussian Channel ◽  
Signal To Noise ◽  
Discrete Signals ◽  
Noise Ratio ◽  
Correlation Properties

The article shows that the solution to the problem of increasing the noise immunity (noise immunity and secrecy of functioning) of the ICS can be achieved using systems of nonlinear signals with improved ensemble, structural and correlation properties. Two classes of nonlinear complex discrete signals are considered: characteristic discrete signals (CDS) and cryptographic signals (CS). Methods for the synthesis of these signals are presented. The paper gives a statistical simulation model for studying the noise immunity of various classes of signals in the Gaussian channel. Using this model, estimates of the dependence of the error probability on the signal-to-noise ratio were obtained for various classes of signals, namely: CDS, KS and standard BPSK AFM-16 signals. It is shown that for the signal-to-noise ratio – 10 the error probability for the CDR is 4.6875e-06, for the CS is 3.515625e-06, and for the AFM-16 is 0.002025. Thus, the use of nonlinear complex discrete signals, in particular, CDS and KS, can significantly increase the noise immunity of signal reception in modern ICS. At the same time, taking into account the improved ensemble and structural properties of these nonlinear signals, it is possible to improve significantly the indicators of crypto- and imitation security of the systems functioning.

Median Morphological Filter Design Based on the PSO Algorithm

2011 ◽  
Vol 128-129 ◽  
pp. 181-184
Author(s):  
You Lian Zhu ◽  
Cheng Huang
Keyword(s):  
Filter Design ◽  
Design Method ◽  
Signal To Noise Ratio ◽  
Pso Algorithm ◽  
Morphological Operations ◽  
Morphological Filter ◽  
Signal To Noise ◽  
Noise Ratio ◽  
The Cost ◽  
Filter Design Method

Design of morphological filter greatly depends on morphological operations and structuring elements selection. A filter design method used median closing morphological operation is proposed to enhance the image denoising ability and the PSO algorithm is introduced for structural elements selecting. The method takes the peak value signal-to-noise ratio (PSNR) as the cost function and may adaptively build unit structuring elements with zero square matrix. Experimental results show the proposed method can effectively remove impulse noise from a noisy image, especially from a low signal-to-noise ratio (SNR) image; the noise reduction performance has obvious advantages than the other.

scholarly journals Optimization of Direct Direction Finding Method with Two-Dimensional Correlative Processing of Spatial Signal

2018 ◽  
Vol 8 ◽  
pp. 46-53
Author(s):  
Vitaliy V. Tsyporenko ◽  
Valentyn G. Tsyporenko
Keyword(s):  
Main Parameter ◽  
Noise Immunity ◽  
Signal To Noise Ratio ◽  
Direction Finding ◽  
High Accuracy ◽  
Signal To Noise ◽  
High Noise ◽  
Spatial Shift ◽  
Simulation Results ◽  
Finding Method

In this article, the main parameter of the correlative-interferometric direction finding method with twodimensional correlative processing of spatial signal in the aperture of a linear antenna array (AA) is determined as the value of spatial shift within the AA aperture. The corresponding objective function is also formed. Analytical optimization of this parameter is presented and a comparative analysis of analytical calculations based on simulation results is conducted. In the simulation, a range of dependencies of the middle square deviation of estimation of direction on the value of the spatial shift for a signal-to-noise ratio of 0 dB, for minimum 3-sample and 4-sample Blackman-Harris windows of the spectral analysis, is received. The value of the middle square deviation of estimation of direction will be minimal and will equal 0.02 degrees using a minimum 3-sample Blackman-Harris window with the −67 dB level of side lobes. It offers high noise immunity and high accuracy of direction finding.

scholarly journals Joint use of frequency-time division and antinoise coding in radio communication systems with FHSS

2021 ◽  
Vol 9 (4) ◽  
pp. 77-84
Author(s):  
A. A. Paramonov ◽  
Van Zung Hoang
Keyword(s):  
Data Transmission ◽  
Communication Systems ◽  
Error Probability ◽  
Noise Immunity ◽  
Signal To Noise Ratio ◽  
Frequency Division ◽  
Radio Communication ◽  
Signal To Noise ◽  
Noise Ratio ◽  
Time Division

In the context of continuous improvement of radio prospecting and active radio jamming technics along with introduction of automated active countermeasures systems (ACS), the frequency-hopping spread spectrum (FHSS) radio communication systems (RCS) are widely used in order to improve reliability and noise immunity of data transmission. The noise immunity of the RCS affected by unintentional or deliberate interference can be significantly perfected by the combined use of frequency-time division and antinoise coding. This paper explores the case when the interference created by an ACS system with a limited transmitter power covers a part of the RCS frequency range. The receiver gets input mix of the wanted signal, the receiver noise, and probably a deliberate interference also considered as a noise. The article analyzes the noise immunity of signals reception with FHSS in the low-speed radio systems with joint use of frequency-time division of information subsymbols and noise combating codes when the deliberate interference destructively impacts a part of the RCS working band. Dependence of the bit error probability on the signal-to-noise ratio is calculated for the joint use of frequency division of information subsymbols and noise combating codes. It is shown that due to effective use of the frequency-energy resource of a radio line, considering the use of correction codes, a quite high noise immunity of RCS under the influence of deliberate interference can be assured. The indicated dependences of the error probability on the signal-to-noise ratio confirm that the reliability of data transmission can be significantly increased by the proper combination of signal spectrum spreading, applying of correction codes, and frequency division of subsymbols followed by their weight processing.

scholarly journals Physical layer synchronization algorithms for signal-code sequence increasing noise immunity of dvb-s2x standard vl-snr mode

2021 ◽  
Vol 2021 (1) ◽  
Author(s):  
L. A. Antiufrieva ◽  
◽  
K. K. Iansitov ◽  
A. V. Dvorkovich
Keyword(s):  
Noise Immunity ◽  
Signal To Noise Ratio ◽  
Physical Layer ◽  
Code Sequence ◽  
Signal To Noise ◽  
Synchronization System ◽  
Noise Ratio ◽  
Signal Operating

The work is devoted to expanding the noise immunity of the DVB-S2X standard and the VL-SNR mode physical layer synchronization algorithms. The article proposes a signal-code sequence that increases the noise immunity of the signal, operating down to −11 dB signal-to-noise ratio, and a synchronization system for it.

scholarly journals Improved performance of near infrared excitation Raman spectroscopy using reflective thin-film gold on glass substrates for cytology samples

2019 ◽  
Vol 11 (47) ◽  
pp. 6023-6032
Author(s):  
Sinead J. Barton ◽  
Kevin O'Dwyer ◽  
Marion Butler ◽  
Adam Dignam ◽  
Hugh J. Byrne ◽  
...  
Keyword(s):  
Thin Film ◽  
Raman Spectroscopy ◽  
Near Infrared ◽  
Signal To Noise Ratio ◽  
Signal To Noise ◽  
Glass Substrates ◽  
Gold Substrates ◽  
Infrared Excitation ◽  
Improved Performance ◽  
The Cost

Thin-film gold substrates offer improved performance and cost for NIR excitation Raman spectroscopy of biological cells when compared with CaF2. We demonstrate a 1.65 times enhancement in the signal to noise ratio with <5% of the cost.

Design and Implementation of a Flexible Interline CCD Pixel Binning Method

2011 ◽  
Vol 48-49 ◽  
pp. 373-377
Author(s):  
Tian Wei Bao ◽  
Shi Wang ◽  
Tian Yu Ma ◽  
Ya Qiang Liu
Keyword(s):  
Signal To Noise Ratio ◽  
Signal To Noise ◽  
Image Capture ◽  
Charge Coupled Device ◽  
Design And Implementation ◽  
Noise Ratio ◽  
The Cost

Pixel binning is a very important mechanism in CCD (Charge Coupled Device) image capture system. At the cost of resolution degradation, the readout speed and SNR (signal-to-noise ratio) are improved. A 3×2 pixel binning technique is reported in this paper and the driving timing sequences are presented. Compared to normal 2×2 pixel binning, this technique keeps a relative better SNR ,but in the same readout speed.

Design of a low cost and power efficient 200/400 Gbps optical interconnect using DAC-less simplified PAM4 architecture

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Bilas Chowdhury ◽  
Ahmad Atieh ◽  
Engin Eyceyurt ◽  
Syed Murshid
Keyword(s):  
Signal To Noise Ratio ◽  
Low Cost ◽  
Pulse Amplitude ◽  
Symbol Error Rate ◽  
Signal Generation ◽  
Pulse Amplitude Modulation ◽  
Signal To Noise ◽  
Power Efficient ◽  
Laser Sources ◽  
The Cost

Abstract Incoherent addition of three monochromatic laser sources is used to create four distinctive power levels to match the profile of standard quaternary pulse amplitude modulation (PAM4). The proposed PAM4 signal generation results in a lower symbol error rate as compared to standard PAM4 systems. This design improves the signal-to-noise ratio as compared to existing PAM4 schemes and can reduce the cost and power consumption of existing 200 G or higher optical transceivers.

scholarly journals Data Preparation Protocol for Low Signal-to-Noise Ratio Fluorine-19 MRI

2021 ◽  
pp. 711-722
Author(s):  
Ludger Starke ◽  
Thoralf Niendorf ◽  
Sonia Waiczies
Keyword(s):  
Signal To Noise Ratio ◽  
Great Promise ◽  
The European Union ◽  
Data Preparation ◽  
Signal To Noise ◽  
Signal Distribution ◽  
Wide Range ◽  
General Data ◽  
Renal Mri ◽  
The Cost

AbstractFluorine-19 MRI shows great promise for a wide range of applications including renal imaging, yet the typically low signal-to-noise ratios and sparse signal distribution necessitate a thorough data preparation.This chapter describes a general data preparation workflow for fluorine MRI experiments. The main processing steps are: (1) estimation of noise level, (2) correction of noise-induced bias and (3) background subtraction. The protocol is supplemented by an example script and toolbox available online.This chapter is based upon work from the COST Action PARENCHIMA, a community-driven network funded by the European Cooperation in Science and Technology (COST) program of the European Union, which aims to improve the reproducibility and standardization of renal MRI biomarkers. This analysis protocol chapter is complemented by two separate chapters describing the basic concept and experimental procedure.

Effective Use of RFID in Medicine and General Healthcare

2013 ◽  
pp. 335-352 ◽  
Author(s):  
Eisuke Hanada
Keyword(s):  
Great Benefit ◽  
Rfid Tags ◽  
Rfid Tag ◽  
Active Rfid ◽  
Rfid Systems ◽  
Effective Use

RFID have been used for decades. There are a variety of systems and several standards for RFID tags. RFID systems have long been utilized in industry, but their use in hospitals is not widespread. RFID tag systems with specific applications to hospital needs have the potential for great benefit, both clinically and economically. In the first part of this chapter, typical uses of RFID in hospitals are shown, after which practical RFID systems are introduced, including the use of newly developed active RFID tags. Finally, possible future medical uses of RFID tags and tag systems are discussed.

Sign in / Sign up

Export Citation Format

Share Document