2017 Systems of Signal Synchronization, Generating and Processing in Telecommunications (SINKHROINFO)最新文献

{"title":"Modulation methods of spectrally pure two-frequency radiation formation for microwaves carrier generation in optical range","authors":"O. Morozov, G. Il'in, G. Morozov","doi":"10.1109/SINKHROINFO.2017.7997544","DOIUrl":"https://doi.org/10.1109/SINKHROINFO.2017.7997544","url":null,"abstract":"A key element of the microwave photonic systems is the subsystem for the formation of modulated laser radiation, which provides both the transfer of the microwave signal to the optical band and the formation of a poly-harmonic optical signal with a difference frequency lying in the microwave range. For example, the latter is used for the generation of continuous microwave carriers in frequency equal to the difference after photo mixing. At the same time, for two-frequency radiation formation, as a rule, either a separate set of lasers spaced by the frequency of a microwave signal, or lasers with internal modulation or mode synchronization, or single-frequency lasers with external modulation based on electro-optical modulators with an operating frequency range up to 100 GHz of amplitude, phase and polarization types, are used. Better characteristics of the line width and the noise generation level of the microwave carriers characterize the latter. Their main disadvantage is the presence in the spectrum of parasitic spectral components, as a rule, side components of higher orders and not up to the end suppressed carrier frequency, the number and amplitudes of which grow when the conversion parameters deviate from the optimal ones.","PeriodicalId":372303,"journal":{"name":"2017 Systems of Signal Synchronization, Generating and Processing in Telecommunications (SINKHROINFO)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121666958","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}

{"title":"Use of ITU-R recommendations in calculating tropospheric signal attenuation in the simulation modeling problems of satellite systems","authors":"D. V. Grishin, Denis Danilov, L. V. Kurakhtenkov","doi":"10.1109/SINKHROINFO.2017.7997515","DOIUrl":"https://doi.org/10.1109/SINKHROINFO.2017.7997515","url":null,"abstract":"The problem of taking into accounting the state of the troposphere in determining the possibility of establishing a radio-link between a spacecraft and a subscriber (a station) on the Earth's surface in context of satellite communication system design and operation planning using the simulation modeling is considered. As an alternative to a full-scale troposphere modeling in order to take into account the influence of the atmosphere a method based on the recommendations of the International Telecommunication Union (ITU) of the R-sector P series is proposed to assess the attenuation of radio signal due to such agents as tropospheric scintillations, clouds, precipitations and atmospheric gases. The ITU methods allow to determine the radio-signal attenuation passing through troposphere given the requirements of communication channel availability. The proposed method is based on solving the inverse problem that leads to the construction of the cumulative distribution function of the random value of the energy budget required to overcome described interferences. Using obtained distribution functions given the radio-link energy budget a vector of indicators is generated, reflecting the possibility of establishing a radio link at each step of the simulation modeling.","PeriodicalId":372303,"journal":{"name":"2017 Systems of Signal Synchronization, Generating and Processing in Telecommunications (SINKHROINFO)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129018926","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}

{"title":"Assessment of the adequacy of the measurement of the maximum speed of reception and transmission in LTE-Advanced in real-time","authors":"A. Konstantinov, A. Pestryakov","doi":"10.1109/SINKHROINFO.2017.7997532","DOIUrl":"https://doi.org/10.1109/SINKHROINFO.2017.7997532","url":null,"abstract":"In order to investigate the effect of switching the transmission modes on the rate of reception and transmission of useful information in the LTE-Advanced network, it is necessary to estimate in real time the degree of the contribution of the specified process to the overall degradation of the channel capacity at each instant of time. A key parameter affecting the maximum achievable data reception and transmission rate in a channel of a given width and at the maximum permissible transmitter power is the signal-to-noise ratio in the channel, therefore it is extremely important to estimate the noise contribution of the switching process. To do this, it is first necessary to understand what real noise contribution the measurement system makes, the obligatory element of which is the radio frequency spectrum analyzer. In order to solve this problem, the method of determining the noise factor of the spectrum analyzer in real test conditions is considered and analyzed in this article.","PeriodicalId":372303,"journal":{"name":"2017 Systems of Signal Synchronization, Generating and Processing in Telecommunications (SINKHROINFO)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133177601","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}

{"title":"Simplification of transistor models for the design of information-communication systems","authors":"M. V. Balashkov, V. M. Bogachev, D. A. Solomatin","doi":"10.1109/SINKHROINFO.2017.7997499","DOIUrl":"https://doi.org/10.1109/SINKHROINFO.2017.7997499","url":null,"abstract":"The modified algorithm for calculation of the six matrix polynomial of the linear models of bipolar and field-effect transistors in the electrical and wave parameter systems is developed and realized on the base of the analytical two-port theory. This is enough for analytical description in these systems of all six matrix forms for any (from three) circuits of transistor connection. Two methods are suggested to reduce the matrix order (in operator and time domains) depending on the frequency application area for the transistor, which simplifies designing of radio electronic and information-communication systems.","PeriodicalId":372303,"journal":{"name":"2017 Systems of Signal Synchronization, Generating and Processing in Telecommunications (SINKHROINFO)","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131726352","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}

{"title":"Zadoff-Chu sequences synchronization system performance with technological imbalance","authors":"A. Timoshenko, Ksenia Molenkamp, Niek B. Molenkamp, Anastasiia Pylkova","doi":"10.1109/SINKHROINFO.2017.7997562","DOIUrl":"https://doi.org/10.1109/SINKHROINFO.2017.7997562","url":null,"abstract":"In the modern LTE systems the Zadoff-Chu sequences are being used to transmit the synchronization signal. The complex sequence is transmitted both in the in-phase (I) and quadrature (Q) channels, the precision of which depends on the technological mismatch of the devices' parameters. The used sequences set a series of limitations on the existed communication systems. The development of new and prospective communication systems, including 5G, sets a mission for designers of the hardware components to achieve the performance limits for signal processing while employing current manufacturing technologies. There are various issues connected with technological scaling, such as using new materials and optimization of power consumption. But the issue of match precision of same type of elements, both passive and active, within same technological process can't be solved with the current technological basis and equipment. Thus, the restrictions induced by the mismatch are laid upon all devices in the communications system. This article focuses on the analysis of behavior of a synchronization system with Zadoff-Chu sequences in the presence of technological imbalance of all elements and devices inside the communication system, namely, I- and Q-channels. Synchronization system analysis includes evaluation for linear and non-linear effects occurring during the signal conversion and processing. The phase and amplitude mismatch of integrated circuit elements in the I- and Q-channels was analyzed. Based on that analysis we obtained the influence of mismatch on settling and hold-up times, and on the false-alarm probability and the synchro-signal undetection probability. The limits of local homeomorphic mapping for technological imbalance of synchronization system parameters are defined. Based on the obtained results, we suggest several measures for circuit and layout implementation of devices in the I- and Q-channels. Additionally, an evaluation of the possibility of restoring synchronization with limited resources of analog-to-digital conversion is made, where the restoring accuracy of each sequence element is constrained by the effective resolution of ADC.","PeriodicalId":372303,"journal":{"name":"2017 Systems of Signal Synchronization, Generating and Processing in Telecommunications (SINKHROINFO)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123551078","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}

{"title":"FMICW signal shaping for single antenna vertical sounding ionosonde using USRP platform","authors":"A. Elsukov, D. Ivanov, V. Ivanov, N. Ryabova, A. Laschevsky","doi":"10.1109/SINKHROINFO.2017.7997521","DOIUrl":"https://doi.org/10.1109/SINKHROINFO.2017.7997521","url":null,"abstract":"The problem of forming an FMICW signal for vertical-incidence single-antenna ionosonde based on the USRP platform using SDR technology was solved. We carried out studies aimed at getting a constant level of a received signal, unambiguous determining virtual reflection height in the required range as well as reducing interference and correlation noise during transmission and compression. The developed algorithms were implemented in software and experimentally tested.","PeriodicalId":372303,"journal":{"name":"2017 Systems of Signal Synchronization, Generating and Processing in Telecommunications (SINKHROINFO)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114214724","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}

{"title":"The quasioptimal linear filtering and increasing the noise resistance in case of measurement of parameters of electrical signals","authors":"A. Mikhaylov, L. D. Hramov","doi":"10.1109/SINKHROINFO.2017.7997542","DOIUrl":"https://doi.org/10.1109/SINKHROINFO.2017.7997542","url":null,"abstract":"The problem of quasioptimal linear filtering electrical signals of industrial frequency in input circuits of devices of relay protection and automatic equipment taking into account requirements of the GOST 32144-2013 to levels and frequencies of harmonic components of electrical voltage. There is a transfer function of the filter, and also implementation of such filters is discussed. Are calculated potential increase in a signal-to-noise ratio in comparison with traditionally used filters. It is given results of simulation of operation of the developed quasioptimal filters.","PeriodicalId":372303,"journal":{"name":"2017 Systems of Signal Synchronization, Generating and Processing in Telecommunications (SINKHROINFO)","volume":"155 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122859177","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}

{"title":"Synthesis of preemphasis finite signal bases for reduction of intersymbol interference","authors":"V. P. Volchkov, V. Sannikov","doi":"10.1109/SINKHROINFO.2017.7997511","DOIUrl":"https://doi.org/10.1109/SINKHROINFO.2017.7997511","url":null,"abstract":"Based on the method of variational calculus is solved the problem of synthesis of preemphasis finite signal bases for transmission of digital symbols over frequency-selective channel. It is shown that the formation and application of such bases in telecommunication systems comes down to adaptive channel precoding of signal symbols, which takes into account the current channel options and allows to compensate the intersymbol interference. The results of computational experiment confirming the good properties of optimal signal bases.","PeriodicalId":372303,"journal":{"name":"2017 Systems of Signal Synchronization, Generating and Processing in Telecommunications (SINKHROINFO)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125097109","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}

{"title":"The estimation of data transfer rates in the broadband radio access networks with collective dynamic routing","authors":"Yuliya S. Vintenkova, S. Kozlov, E. Spirina","doi":"10.1109/SINKHROINFO.2017.7997510","DOIUrl":"https://doi.org/10.1109/SINKHROINFO.2017.7997510","url":null,"abstract":"The article develops an information rates estimation method for communication channels with known data delivery routes. Conclusion about the sufficiency of Gaussian probability model usage for describing the distribution of intra-system interference with a large number of simultaneously transmitted signals is made. Derived expressions allow to determinate signal-to-interference ratios for estimating the subcarriers quadrature components which are the basis for information rates estimations. The developed method of information rates estimation was verified for the test section of the 802.11n operating network that showed information rates estimations deviation decrease due to the intra-system interference impact and the possibility of applying various signal reception algorithms.","PeriodicalId":372303,"journal":{"name":"2017 Systems of Signal Synchronization, Generating and Processing in Telecommunications (SINKHROINFO)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115323889","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}

{"title":"Self-organizing ultrawideband wireless sensor network","authors":"A. Dmitriev, L. Kuzmin, V. Lazarev, Anton I. Ryshov, Y. Andreyev, M. G. Popov","doi":"10.1109/SINKHROINFO.2017.7997519","DOIUrl":"https://doi.org/10.1109/SINKHROINFO.2017.7997519","url":null,"abstract":"In the report, self-organization in wireless ultrawideband sensor networks is considered as an approach aimed at solving two problems: establishment of links between network nodes and switching the network nodes into synchronous data transmission mode. An experimental UWB wireless sensor network with chaotic carrier on physical layer is described. This network belongs to the class of wireless personal area networks. It consists of short-range transceivers with radio links up to 30 m in free space, average emission power ∼0.1 mW and data rate up to 12 Mbps.","PeriodicalId":372303,"journal":{"name":"2017 Systems of Signal Synchronization, Generating and Processing in Telecommunications (SINKHROINFO)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117188368","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}