Academic literature on the topic 'Propagation impairment mitigation techniques'

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Journal articles on the topic "Propagation impairment mitigation techniques"

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Rafiqul, Islam Md, Ali Kadhim Lwas, Mohamed Hadi Habaebi, et al. "Analysis of Time Diversity Gain for Satellite Communication Link based on Ku-Band Rain Attenuation Data Measured in Malaysia." International Journal of Electrical and Computer Engineering (IJECE) 8, no. 4 (2018): 2608. http://dx.doi.org/10.11591/ijece.v8i4.pp2608-2613.

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<p><span>This paper reports a study on mitigation of propagation impairments on Earth–space communication links. The study uses time diversity as a technique for mitigating rain propagation impairment in order to rectify rain fade. Rain attenuation time series along earth-to-satellite link were measured for two years period at 12.255 GHz in Malaysia. The time diversity technique was applied on measured rain fade to investigate the level of possible improvement in system. Time diversity gain from measured one-minute rain attenuation for two years period was estimated and significant
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Panagopoulos, Athanasios D., Pantelis-Daniel M. Arapoglou, and Panayotis G. Cottis. "Satellite communications at KU, KA, and V bands: Propagation impairments and mitigation techniques." IEEE Communications Surveys & Tutorials 6, no. 3 (2004): 2–14. http://dx.doi.org/10.1109/comst.2004.5342290.

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Mohebbi Nia, Masoud, Jafri Din, Hong Yin Lam, and Athanasios D. Panagopoulos. "Stochastic Approach to a Rain Attenuation Time Series Synthesizer for Heavy Rain Regions." International Journal of Electrical and Computer Engineering (IJECE) 6, no. 5 (2016): 2379. http://dx.doi.org/10.11591/ijece.v6i5.11741.

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<p>In this work, a new rain attenuation time series synthesizer based on the stochastic approach is presented. The model combines a well-known interest-rate prediction model in finance namely the Cox-Ingersoll-Ross (CIR) model, and a stochastic differential equation approach to generate a long-term gamma distributed rain attenuation time series, particularly appropriate for heavy rain regions. The model parameters were derived from maximum-likelihood estimation (MLE) and Ordinary Least Square (OLS) methods. The predicted statistics from the CIR model with the OLS method are in good agree
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Mohebbi Nia, Masoud, Jafri Din, Hong Yin Lam, and Athanasios D. Panagopoulos. "Stochastic Approach to a Rain Attenuation Time Series Synthesizer for Heavy Rain Regions." International Journal of Electrical and Computer Engineering (IJECE) 6, no. 5 (2016): 2379. http://dx.doi.org/10.11591/ijece.v6i5.pp2379-2386.

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<p>In this work, a new rain attenuation time series synthesizer based on the stochastic approach is presented. The model combines a well-known interest-rate prediction model in finance namely the Cox-Ingersoll-Ross (CIR) model, and a stochastic differential equation approach to generate a long-term gamma distributed rain attenuation time series, particularly appropriate for heavy rain regions. The model parameters were derived from maximum-likelihood estimation (MLE) and Ordinary Least Square (OLS) methods. The predicted statistics from the CIR model with the OLS method are in good agree
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Zhao, Jian, Yaping Liu, and Tianhua Xu. "Advanced DSP for Coherent Optical Fiber Communication." Applied Sciences 9, no. 19 (2019): 4192. http://dx.doi.org/10.3390/app9194192.

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In this paper, we provide an overview of recent progress on advanced digital signal processing (DSP) techniques for high-capacity long-haul coherent optical fiber transmission systems. Not only the linear impairments existing in optical transmission links need to be compensated, but also, the nonlinear impairments require proper algorithms for mitigation because they become major limiting factors for long-haul large-capacity optical transmission systems. Besides the time domain equalization (TDE), the frequency domain equalization (FDE) DSP also provides a similar performance, with a much-redu
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Dahman, Isabelle, Philippe Arbogast, Nicolas Jeannin, and Bouchra Benammar. "Rain attenuation prediction model for satellite communications based on the Météo-France ensemble prediction system PEARP." Natural Hazards and Earth System Sciences 18, no. 12 (2018): 3327–41. http://dx.doi.org/10.5194/nhess-18-3327-2018.

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Abstract. This paper presents an example of the usage of ensemble weather forecasting for the control of satellite-based communication systems. Satellite communication systems become increasingly sensitive to weather conditions as their operating frequency increases to avoid electromagnetic spectrum congestion and enhance their capacity. In the microwave domain, electromagnetic waves that are conveying information are attenuated between the satellite and Earth terminals in the presence of hydrometeors (mostly rain drops and more marginally cloud droplets). To maintain a reasonable level of ser
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Kumar, Amit, and Pallavi Kulkarni. "Pervasive Malware Propagation Mechanism and Mitigation Techniques." International Journal of Computer Applications 125, no. 4 (2015): 37–43. http://dx.doi.org/10.5120/ijca2015905893.

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Harverson, M., and T. R. Brunt. "Computer-aided evaluation of propagation impairment restoration techniques." International Journal of Satellite Communications 6, no. 3 (1988): 343–59. http://dx.doi.org/10.1002/sat.4600060312.

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Adegbindin, I. A., P. A. Owolawi, and M. O. Odhiambo. "Intelligent Weather Awareness Technique for Mitigating Propagation Impairment at SHF and EHF Satellite Network System in a Tropical Climate." SAIEE Africa Research Journal 107, no. 3 (2016): 136–45. http://dx.doi.org/10.23919/saiee.2016.8532238.

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Barral, Valentín, Carlos J. Escudero, José A. García-Naya, and Roberto Maneiro-Catoira. "NLOS Identification and Mitigation Using Low-Cost UWB Devices." Sensors 19, no. 16 (2019): 3464. http://dx.doi.org/10.3390/s19163464.

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Indoor location systems based on ultra-wideband (UWB) technology have become very popular in recent years following the introduction of a number of low-cost devices on the market capable of providing accurate distance measurements. Although promising, UWB devices also suffer from the classic problems found when working in indoor scenarios, especially when there is no a clear line-of-sight (LOS) between the emitter and the receiver, causing the estimation error to increase up to several meters. In this work, machine learning (ML) techniques are employed to analyze several sets of real UWB measu
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Dissertations / Theses on the topic "Propagation impairment mitigation techniques"

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Kindervatter, Tim. "Survey of Ionospheric Propagation Effects and Modeling Techniques for Mitigation of GPS Error." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1515106508878179.

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Jorge, Flávio Miguel da Silva. "High-order Earth-satellite propagation channel measurement and modelling at Ka and Q/V-bands." Doctoral thesis, 2020. http://hdl.handle.net/10773/28937.

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This work focuses on high-capacity spectral-efficient Earth-space microwave communication links, supporting the access to wider and less congested bandwidths and providing the required technological advances on radiowave propagation for the design and operation of system-technologies improving the spectral efficiency, proposing the operation of frequency-reuse schemes and polarization diversity techniques at Ka- and Q/V-bands. Because the suitable planning, successful deployment and effective, spectralefficient and interference-free, operation of all space-borne systems and services is
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Tsai, Kuen-Ting, and 蔡坤廷. "Optical Performance Monitoring and Impairment Mitigation Techniques." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/27959249567639443713.

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博士<br>國立交通大學<br>電信工程系所<br>94<br>In this dissertation, we propose and demonstrate three novel techniques for optical performance monitoring (OPM) and impairment mitigation. The first one is proposed for dispersion monitoring at 40 Gb/s or beyond, and it is a novel post-detection method based on an optical delay-and-add filter (DAF). The proposed method can be used with or without a pilot tone, and works well even when there exists a residual chirp due to the finite DC extinction ratio of a Mach Zehnder (MZ) modulator or self-phase modulation (SPM). The second technique is proposed and demons
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"Impairment mitigation for high-speed optical communication systems." Thesis, 2007. http://library.cuhk.edu.hk/record=b6074388.

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Electronic equalization has recently attracted considerable interest for impairment compensation for its significant cost saving and adaptive compensation capability. In this thesis, we propose novel maximum-likelihood sequence estimation (MLSE) structures for various advanced modulation formats. Electronic equalization of advanced modulation formats further extends the transmission reach and relaxes the speed limitation of electronic devices. We also propose novel application of MLSE for mitigation of timing misalignment between the pulse carver and data modulator in return-to-zero (RZ) syste
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Book chapters on the topic "Propagation impairment mitigation techniques"

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Tasseff, Byron, Russell Bent, and Pascal Van Hentenryck. "Optimal Flood Mitigation over Flood Propagation Approximations." In Integration of AI and OR Techniques in Constraint Programming. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-33954-2_26.

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Saxena, Akrati, Pratishtha Saxena, and Harita Reddy. "Fake News Propagation and Mitigation Techniques: A Survey." In Principles of Social Networking. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-3398-0_16.

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"Wireless Channel Impairment Mitigation Techniques." In Wireless Communications Systems Design. John Wiley & Sons, Ltd, 2015. http://dx.doi.org/10.1002/9781118759479.ch5.

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Panagopoulos, Athanasios D. "Propagation Phenomena and Modeling for Fixed Satellite Systems Evaluation of Fade Mitigation Techniques." In Radio Wave Propagation and Channel Modeling for Earth–Space Systems. CRC Press, 2017. http://dx.doi.org/10.1201/b20072-2.

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Zhang, Ling, Yuru Feng, Jun Fan, and Er-Ping Li. "High-Frequency Electromagnetic Interference Diagnostics." In Electromagnetic Wave Propagation for Industry and Biomedical Applications [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.97613.

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Electromagnetic interference (EMI) is becoming more troublesome in modern electronic systems due to the continuous increase of communication data rates. This chapter reviews some new methodologies for high-frequency EMI diagnostics in recent researches. Optical modules, as a typical type of gigahertz radiator, are studied in this chapter. First, the dominant radiation modules and EMI coupling paths in an explicit optical module are analyzed using simulation and measurement techniques. Correspondingly, practical mitigation approaches are proposed to suppress the radiation in real product applications. Moreover, an emission source microscopy (ESM) method, which can rapidly localize far-field radiators, is applied to diagnose multiple optical modules and identify the dominant sources. Finally, when numerous optical modules work simultaneously in a large network router, a formula based on statistical analysis can estimate the maximum far-field emission and the probability of passing electromagnetic compatibility (EMC) regulations. This chapter reviews a systematic procedure for EMI diagnostics at high frequencies, including EMI coupling path analysis and mitigation, emission source localization, and radiation estimation using statistical analysis.
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Wen, Kai, and Kegen Yu. "Integrated Positioning With UWB and INS." In Advances in Wireless Technologies and Telecommunication. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-3528-7.ch008.

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The chapter studies the positioning techniques based on ultra wideband (UWB) and low cost inertial measurement unit (IMU) with a focus on the fundamental theories of integrated positioning based on UWB and IMU. Details are provided for multilateral positioning theory of UWB, UWB calibration method, IMU error analysis, inertial navigation algorithm, and Kalman filter (KF) theory. Particularly, to mitigate the influence of non-line-of-sight (NLOS) propagation on positioning accuracy, a NLOS mitigation method based on fuzzy theory is presented. Meanwhile, the detailed data fusion processes of loosely coupled and tightly coupled systems are introduced and performance evaluation is conducted using experimental data.
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Dutta, Palash. "Fuzzy-Probability." In Advanced Fuzzy Logic Approaches in Engineering Science. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-5709-8.ch009.

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Human health risk assessment is an important and a popular aid in the decision-making process. The basic objective of risk assessment is to assess the severity and likelihood of impairment to human health from exposure to a substance or activity that under plausible circumstances can cause harm to human health. One of the most important aspects of risk assessment is to accumulate knowledge on the features of each and every available data, information and model parameters involved in risk assessment. It is observed that most frequently model parameters, data, and information are tainted with aleatory and epistemic uncertainty. In such situations, fuzzy set theory or probability theory or Dempster-Shafer theory (DSS) can be explored to represent uncertainty. If all the three types of uncertainty coexist how far computation of the risk is concern, two ways to deal with the situation either transform all the uncertainties to one type of format or need for joint propagation of uncertainties. Therefore, this article presents an effort to combine Probability distributions, fuzzy numbers (FNs) and DSS. Highlights of this study are: 1) The approaches presented here deal with the amalgamation of probability distributions where representations of parameters are of bell shaped fuzzy numbers (BFNs)/FNs; fuzzy numbers (FNs) of various types and shapes plus DSS with fuzzy focal elements of different types within the same framework; 2) Non-cancer human health risk assessment is carried out in this setting and 3) Risk values are obtained in the form of FNs at different fractiles. The techniques provided in this study are proficient to exploit in any mathematical models which represent real world problems, wherein model parameters are tainted with uncertainty where representations of uncertain model parameters are probability distributions with bell BFNs/FNs parameters; DSS with fuzzy focal elements of different types plus FNs with different shapes and types.
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Conference papers on the topic "Propagation impairment mitigation techniques"

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Bousquet, Michel, Misha Filip, M. Willis, A. Martellucci, and Laurent Castanet. "Needs in Propagation Modelling and Impairment Mitigation Techniques Surveyed from COST 280." In 21st International Communications Satellite Systems Conference and Exhibit. American Institute of Aeronautics and Astronautics, 2003. http://dx.doi.org/10.2514/6.2003-2265.

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Alejos, A. V., M. G. Sanchez, and I. Cuinas. "Propagation impairments mitigation techniques for broadband WLANs." In 2nd European Conference on Antennas and Propagation (EuCAP 2007). Institution of Engineering and Technology, 2007. http://dx.doi.org/10.1049/ic.2007.1030.

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Cianca, E., C. Stallo, M. Lucente, et al. "TRANSPONDERS: Effectiveness of Propagation Impairments Mitigation Techniques at Q/V Band." In 2008 IEEE Globecom Workshops. IEEE, 2008. http://dx.doi.org/10.1109/glocomw.2008.ecp.12.

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Umasankar, Bharath, and Xavier Fernando. "OFDM impairment mitigation techniques." In 2007 Second International Conference on Access Networks & Workshops. IEEE, 2007. http://dx.doi.org/10.1109/accessnets.2007.4447139.

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Filip, M. "COST 280: propagation impairment mitigation for millimetre wave radio systems." In Twelfth International Conference on Antennas and Propagation (ICAP 2003). IEE, 2003. http://dx.doi.org/10.1049/cp:20030140.

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Iglesias, David Rey, and Manuel Garcia Sanchez. "L-band LMS impairment mitigation by using diversity at the receiver." In 2013 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting. IEEE, 2013. http://dx.doi.org/10.1109/aps.2013.6711660.

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Willis, M. J. "Key results from COST 280 - propagation impairment mitigation for millimetre wave radio systems." In IEE Two Day Conference. Getting the Most Out of the Radio Spectrum. IEE, 2002. http://dx.doi.org/10.1049/ic:20020261.

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Saarnisaari, Harri, Henri Puska, and Pekka Lilja. "Interference mitigation techniques for single and multi antenna receivers." In 2006 1st European Conference on Antennas and Propagation (EuCAP). IEEE, 2006. http://dx.doi.org/10.1109/eucap.2006.4584761.

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Morgan, Zachary C. P. O., Kenneth L. Morgan, Jeremy A. Bossard, et al. "Design techniques for loss mitigation in metamaterial reflector antennas." In 2015 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting. IEEE, 2015. http://dx.doi.org/10.1109/aps.2015.7304981.

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Rahman, Md Rakibur, Satheesh Bojja- Venkatakrishnan, Elias A. Alwan, and John L. Volakis. "Spread Spectrum Techniques for Interference Mitigation in Large Bandwidth." In 2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting. IEEE, 2019. http://dx.doi.org/10.1109/apusncursinrsm.2019.8888648.

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