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Optimal receiver ensuring maximum signal-to-noise ratio when affected by non-white non-gaussian noise 受非白非高斯噪声影响时确保最大信噪比的最佳接收器
Journal of Radio Electronics Pub Date : 2024-07-01 DOI: 10.30898/1684-1719.2024.7.1
A. Degtyaryov, I.L. Afonin, V. Slyozkin, G. V. Slyozkin
{"title":"Optimal receiver ensuring maximum signal-to-noise ratio when affected by non-white non-gaussian noise","authors":"A. Degtyaryov, I.L. Afonin, V. Slyozkin, G. V. Slyozkin","doi":"10.30898/1684-1719.2024.7.1","DOIUrl":"https://doi.org/10.30898/1684-1719.2024.7.1","url":null,"abstract":"This paper analyses the problem of optimal reception of a limited duration signal in a communication channel affected by an additive noise such as non-white non-Gaussian noise. Known solutions are based on the use of an additional “whitening” filter either in front of a filter matched with the signal or in front of a correlator where the reference signal matches the shape of the information signal. Such receiving devices are hard to implement in the case of, for example, intentional interference with slowly changing parameters, which requires filter parameters to be altered. It is proposed to simplify the receiver design by eliminating the whitening filter. The feasibility of two optimal technique options is proven mathematically using the theory of the Lagrange function in the isoperimetric problem of finding the type of function that ensures a minimum noise dispersion and a non-zero value of the signal component. For optimal filtration options, an expression is obtained for the complex transmission coefficient of the optimal (in the indicated sense) filter. For the option when a correlator is used, the optimal type of reference signal has been determined. Expressions have been obtained for the signal-to-noise energy ratio for both options. These expressions coincided with each other, and also agreed with a known relationship for receivers with whitening filters, which proves the possibility of implementing the proposed simpler optimal receiver designs.","PeriodicalId":508283,"journal":{"name":"Journal of Radio Electronics","volume":"312 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141692091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Some problems of discretization and determination of basic parameters of harmonic signals 谐波信号离散化和基本参数确定的若干问题
Journal of Radio Electronics Pub Date : 2024-07-01 DOI: 10.30898/1684-1719.2024.7.2
I.N. Zaitseva, V. N. Ugol'kov
{"title":"Some problems of discretization and determination of basic parameters of harmonic signals","authors":"I.N. Zaitseva, V. N. Ugol'kov","doi":"10.30898/1684-1719.2024.7.2","DOIUrl":"https://doi.org/10.30898/1684-1719.2024.7.2","url":null,"abstract":"The formulation and proof of the theorem on the necessity and sufficiency of three instantaneous readouts of harmonic signals for determining their basic parameters (the amplitude, the frequency and the phase shift) are presented. The developed analog-digital algorithms for determining basic parameters of harmonic signals by the minimum of instantaneous readouts in a time shorter than their period are described on the basis of the proved theorem. The results of mathematical modeling of the developed algorithm of determining the frequency of a harmonic signal by the probabilistic-statistical method are presented. Algorithm errors for determining the frequency of both a pure harmonic signal, and a signal with five harmonics with different accuracy of representation in amplitude of discrete values of signals are investigated.","PeriodicalId":508283,"journal":{"name":"Journal of Radio Electronics","volume":"6 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141698062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Minimizing error probability during weighed reception of a message with a two-level pulse-code modulation under conditions of inter-symbol interference 在符号间干扰条件下，最大限度地降低以两级脉冲编码调制接收信息时的错误概率
Journal of Radio Electronics Pub Date : 2024-06-01 DOI: 10.30898/1684-1719.2024.6.1
А.N. Degtyaryov, S.А. Коneva
{"title":"Minimizing error probability during weighed reception of a message with a two-level pulse-code modulation under conditions of inter-symbol interference","authors":"А.N. Degtyaryov, S.А. Коneva","doi":"10.30898/1684-1719.2024.6.1","DOIUrl":"https://doi.org/10.30898/1684-1719.2024.6.1","url":null,"abstract":"In order to increase the noise immunity of data transmission systems, it is proposed to reduce the level of intersymbol interference by means of orthogonalizing the channel symbols. Orthogonalization is done through determining the orthogonality weight. Presented below is a calculation of the E-criterion for assessing the level of intersymbol interference for the proposed data transmission systems using the pulse-code modulation. For both systems, it was assumed that normalized Butterworth low-pass filters would be used as the shaping filter. It is shown that when signal-to-noise ratios exceed a certain critical value, weighted signal processing provides a lower bit error probability compared to the conventional processing technique. A general analytical expression for the orthogonality weight of channel symbols is given, which ensures a minimum bit error probability.","PeriodicalId":508283,"journal":{"name":"Journal of Radio Electronics","volume":"127 32","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141282067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Modified method for calculating the characteristics of the goniometer discriminator in a monopulse radar by the method of amplitude instantaneous comparison 用振幅瞬时比较法计算单脉冲雷达中测角器鉴别器特性的改进方法
Journal of Radio Electronics Pub Date : 2024-06-01 DOI: 10.30898/1684-1719.2024.6.3
Y. N. Builou, A.S. Solonar
{"title":"Modified method for calculating the characteristics of the goniometer discriminator in a monopulse radar by the method of amplitude instantaneous comparison","authors":"Y. N. Builou, A.S. Solonar","doi":"10.30898/1684-1719.2024.6.3","DOIUrl":"https://doi.org/10.30898/1684-1719.2024.6.3","url":null,"abstract":"A modified technique for determining the characteristics of the goniometer discriminator in a monopulse radar using the method of amplitude instantaneous comparison is proposed. Its distinctive features from the generalized technique are: in determining the minimum number of intermediate points of the interpolating function of the discriminatory characteristic of the discriminator, followed by calculating its maximum deviation from the theoretical discriminatory characteristic; in estimating the steepness of the discriminatory characteristic at each intermediate point; in calculating the fluctuation characteristic of the discriminator by estimating the variance of the error signal of angular coordinates at intermediate points of the discriminatory characteristic; in using the interpolating steepness function and the fluctuation characteristic of the discriminator for mismatches smaller than the step of change of intermediate points. The results of mathematical modeling of the discriminatory and fluctuation characteristics of the discriminator of the goniometer using the proposed technique are presented.","PeriodicalId":508283,"journal":{"name":"Journal of Radio Electronics","volume":"14 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141279464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mode locking regimes in a traveling wave tube with a feedback circuit 带有反馈电路的行波管中的模式锁定机制
Journal of Radio Electronics Pub Date : 2024-06-01 DOI: 10.30898/1684-1719.2024.6.4
M. N. Vilkov, A. A. Ivanov, R. Rozental
{"title":"Mode locking regimes in a traveling wave tube with a feedback circuit","authors":"M. N. Vilkov, A. A. Ivanov, R. Rozental","doi":"10.30898/1684-1719.2024.6.4","DOIUrl":"https://doi.org/10.30898/1684-1719.2024.6.4","url":null,"abstract":"The generation of sequences of short correlated pulses in a traveling wave tube (TWT) with a feedback circuit in mode locking regime are considered. It is shown that in a system with parameters corresponding to an experimentally implemented W-band TWT with a linear feedback circuit, it is possible to generate pulses whose peak intensity is several times the average power level. In turn, a significant increase in the peak pulse intensity can be achieved by adding a saturable absorber to the feedback circuit.","PeriodicalId":508283,"journal":{"name":"Journal of Radio Electronics","volume":"49 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141414589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Detailing areas of receiving TV signal in single frequency network DVB-T2 在单频网络 DVB-T2 中接收电视信号的详细领域
Journal of Radio Electronics Pub Date : 2024-06-01 DOI: 10.30898/1684-1719.2024.6.5
L. Statsenko, V.V. Petrosyants, A. Lomakin, N.E. Kolesnikova, D.E. Tikhonov
{"title":"Detailing areas of receiving TV signal in single frequency network DVB-T2","authors":"L. Statsenko, V.V. Petrosyants, A. Lomakin, N.E. Kolesnikova, D.E. Tikhonov","doi":"10.30898/1684-1719.2024.6.5","DOIUrl":"https://doi.org/10.30898/1684-1719.2024.6.5","url":null,"abstract":"One of the ways to clarify the zones of a television signal’s confident reception in single-frequency networks (SFN) DVB-T2 deployed on previously existing infrastructure of analog signal’s television is considered. A simulation model of the SFN broadcasting consist of module of the propagation of radio waves, module of a transmitting station, module of a receiving station and a geoinformation system. It has been revealed that the DVB-T2 broadcasting modes, the effective antenna suspension heights and the effective radiated power of transmitters, which are used in DVB-T2 broadcasting, can lead not only to the appearance of areas of intra-character interference with reduced television signal quality inside the service area, but also to the effect of the so-called \"intra-network amplification\". The discrepancy between the used protective interval (PI) and the topology of the studied OSS has been established.","PeriodicalId":508283,"journal":{"name":"Journal of Radio Electronics","volume":"85 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141394422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Estimation of noise immunity of ultra-wideband radio communication network based on simulation modeling in Anylogic environment 基于 Anylogic 环境模拟建模的超宽带无线电通信网络抗噪声能力估算
Journal of Radio Electronics Pub Date : 2024-02-01 DOI: 10.30898/1684-1719.2024.2.1
A. Molev, K.D. Titov, V.V. Kondaurova
{"title":"Estimation of noise immunity of ultra-wideband radio communication network based on simulation modeling in Anylogic environment","authors":"A. Molev, K.D. Titov, V.V. Kondaurova","doi":"10.30898/1684-1719.2024.2.1","DOIUrl":"https://doi.org/10.30898/1684-1719.2024.2.1","url":null,"abstract":"The article conducts assessment of noise protection of ultra-wideband radio network under conditions of interference from different sources (with different configuration). It has been shown that ultra-wideband radio technology provides efficient functioning of radio communication networks under interference conditions.","PeriodicalId":508283,"journal":{"name":"Journal of Radio Electronics","volume":"222 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140466790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Scattering characteristics of a corner reflector with polarization transformation when irradiated with microwave radio signals of microsecond and nanosecond duration 用微秒和纳秒持续时间的微波无线电信号照射具有偏振变换的角反射器时的散射特性
Journal of Radio Electronics Pub Date : 2024-02-01 DOI: 10.30898/1684-1719.2024.2.10
E. L. Shoshin
{"title":"Scattering characteristics of a corner reflector with polarization transformation when irradiated with microwave radio signals of microsecond and nanosecond duration","authors":"E. L. Shoshin","doi":"10.30898/1684-1719.2024.2.10","DOIUrl":"https://doi.org/10.30898/1684-1719.2024.2.10","url":null,"abstract":"The potential capabilities of a waveguide type resonator forming compressed microwave pulses are considered. The uncertainty function of the radio signals generated by the resonance compression method is analyzed. The influence of the pre-pulse and post-pulse on the potential range resolution has been studied. The results of experimental studies of the scattering characteristics of a corner reflector with polarization transformation when irradiated with microwave radio signals of microsecond and nanosecond duration are presented.","PeriodicalId":508283,"journal":{"name":"Journal of Radio Electronics","volume":"72 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140462948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of negative wave refraction in metallic photonic crystals 金属光子晶体中的负波折射效应
Journal of Radio Electronics Pub Date : 2024-02-01 DOI: 10.30898/1684-1719.2024.2.6
A. Vetluzhsky
{"title":"Effects of negative wave refraction in metallic photonic crystals","authors":"A. Vetluzhsky","doi":"10.30898/1684-1719.2024.2.6","DOIUrl":"https://doi.org/10.30898/1684-1719.2024.2.6","url":null,"abstract":"The paper considers the interaction of optical radiation with the boundaries of media formed by two-dimensionally periodic systems of well-conducting cylindrical elements of small cross-section – metal photonic crystals. It is shown that at band gap frequencies in the spectrum of the crystal's own electromagnetic states when waves propagate obliquely relative to the elements, such structures can be characterized by hyperbolic isofrequency diagrams in the space of wave vectors. A consequence of this is the possibility of negative refraction effects occurring when waves are incident on the boundary of such an anisotropic hyperbolic medium formed by a two-dimensional crystal with elements of limited length. The problem of incidence of a plane-wave Gaussian optical beam on the surface of a metal photonic crystal is solved using the finite-difference method in the time domain. It has been proven that negative refraction of waves occurs under certain conditions at the boundary of the medium formed by such a crystal.","PeriodicalId":508283,"journal":{"name":"Journal of Radio Electronics","volume":"799 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140469341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An approach for constructing a two-element antenna array based on the Cramer-Rao lower bound for direction-of-arrival estimation of radio signals with super-resolution and increased accuracy 基于克拉默-拉奥下界的双元素天线阵列构建方法，用于超分辨率和更高精度的无线电信号到达方向估计
Journal of Radio Electronics Pub Date : 2024-02-01 DOI: 10.30898/1684-1719.2024.2.11
I. Peshkov
{"title":"An approach for constructing a two-element antenna array based on the Cramer-Rao lower bound for direction-of-arrival estimation of radio signals with super-resolution and increased accuracy","authors":"I. Peshkov","doi":"10.30898/1684-1719.2024.2.11","DOIUrl":"https://doi.org/10.30898/1684-1719.2024.2.11","url":null,"abstract":"In the paper an effective method for optimal placement of directional antenna elements for digital spatial signal estimation is discussed. The digital antenna array evaluates spatial coordinates with the subsequent beamforming. However, as it is well known, the relative position of antenna elements, their number and the shape of the radiation pattern have a significant impact on the quality of the spatial pseudospectrum. The paper uses the previously obtained expression for estimating the Cramer-Rao lower bound to reduce the number of antenna elements without losing the accuracy of direction-of-arrival estimation of the signals. For example, a two-element array is obtained. The elements have a flat-top radiation pattern. It is shown that the accuracy of the MUSIC method in the obtained array is higher or comparable to the array composed of three elements.","PeriodicalId":508283,"journal":{"name":"Journal of Radio Electronics","volume":"1299 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140466851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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