Relevant bibliographies by topics / Modulated carrier signal

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Modulated carrier signal'

Author: Grafiati
Published: 4 June 2025
Last updated: 15 July 2025

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Journal articles on the topic "Modulated carrier signal"

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Bai, Jiang Ling, Li Bin Zhong, Wen Hai Xu, and Jian Lin. "Research on Optical Signal Carrier Transmission Technology." Advanced Materials Research 1022 (August 2014): 193–96. http://dx.doi.org/10.4028/www.scientific.net/amr.1022.193.

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This paper studies the single-sideband RF signals in the optical carrier side than the problem. RF signals modulated optical carrier OSSB + C modulation index is usually small, leading edge modulated carrier radio frequency signal generated by the optical carrier ratio is not ideal. A design scheme based on three-arm and four-arm MZM MZM optimized optical carrier single sideband radio frequency signal containing the edge ratio. By adjusting the DC bias voltage of the modulator can control the carrier side than the light signal. For any modulation index, are able to make the optical carrier single sideband radio frequency signal containing edges than the optimal value of 0 dB, improving the performance of the system. The simulation also verify their feasibility.
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Al-Haddad, Mohammed Kasim. "GENERATION OF MPSK SIGNAL USING LOGIC CIRCUITS." Journal of Engineering 18, no. 03 (2023): 381–91. http://dx.doi.org/10.31026/j.eng.2012.03.01.

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The traditional technique of generating MPSK signals is basically to use IQ modulator that involves analog processing like multiplication and addition where inaccuracies may exist and would lead to imbalance problems that affects the output modulated signal and hence the overall performance of the system. In this paper, a simple method is presented for generating the MPSK using logic circuits that basically generated M-carrier signals each carrier of different equally spaced phase shift. Then these carriers are time multiplexed, according to the data symbols, into the output modulated signal.
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Shanmugasundaram, S. "Sub Carrier Analysis for QAM Modulation." Bulletin of Electrical Engineering and Informatics 6, no. 4 (2017): 354–57. http://dx.doi.org/10.11591/eei.v6i4.866.

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Orthogonal Frequency Division Multiplexing (OFDM) based wireless data transmission system is a multi-carrier system in which single higher rate data stream can be divided into multiple lower rate data streams. Modulation and De-Modulation technique play a major role in OFDM based data transmission system. Based on Modulation technique only, the frequency transformation method and encoding and decoding methods are enabled. Effective modulation techniques called as “Quadrature Amplitude Modulation (QAM)” modulation are used to design an OFDM System. Carrier signal is one of the important signals used to modulate the original signal. Analyzing the sub-carrier signal for getting the quality of the modulated signal.
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S., Shanmugasundaram. "Sub Carrier Analysis for QAM Modulation." Bulletin of Electrical Engineering and Informatics 6, no. 4 (2017): 354–57. https://doi.org/10.11591/eei.v6i4.866.

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Orthogonal Frequency Division Multiplexing (OFDM) based wireless data transmission system is a multi-carrier system in which single higher rate data stream can be divided into multiple lower rate data streams. Modulation and De-Modulation technique play a major role in OFDM based data transmission system. Based on Modulation technique only, the frequency transformation method and encoding and decoding methods are enabled. Effective modulation techniques called as “Quadrature Amplitude Modulation (QAM)”modulation are used to design an OFDM System. Carrier signal is one of the important signals used to modulate the original signal. Analyzing the sub-carrier signal for getting the quality of the modulated signal.
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Chen, Xin-Qiao, Yu-Fei Dou, Si-Yuan Dai, Jing Wang, Wei Zhao, and Xu Chen. "A Novel Frequency Doubling Radio on Fiber System Without Bit Walk-Off Effect by Inserting a Pilot Frequency Signal." Journal of Nanoelectronics and Optoelectronics 19, no. 4 (2024): 376–84. http://dx.doi.org/10.1166/jno.2024.3585.

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A novel insertion pilot-frequency signal method for doubling frequency radio on fiber (ROF) system is proposed. At the center station (CS), the carrier emitting from the continuous wave (CW) laser is split into two branches. In one branch, a composite RF drive signal formed by combining the data modulated by a phased modulator (PM) and the data gained by an electrical gainer (EG) is loaded to the Mach-Zehnder modulator (MZM) to produce ± 1th order sideband signals. The data signal of down link is modulated only on −1th order sideband. The other branch is used as the pilot signal. At the base station (BS), the pilot signal is reflected out using a fiber Bragg grating (FBG) and used as the carrier for the uplink. The signal passing through the FBG is sent into the photodetector, and the twofold millimeter wave signal is generated. The mathematical analysis and simulated experiment are given. The innovation of this paper is to introduce the pilot optical signal method for carrier reuse in ROF, it can overcome the poor tunability and degraded downlink performance in the conventional carrier reuse in ROF. The effect of bit walk-off is eliminated due to the data of downlink and uplink being modulated on the −1th and 0th order sideband respectively.
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Chen, Xiaofei, Xiaochun Lu, Xue Wang, Jing Ke, and Xia Guo. "Constant Envelope Multiplexing of Multi-Carrier DSSS Signals Considering Sub-Carrier Frequency Constraint." Electronics 10, no. 2 (2021): 211. http://dx.doi.org/10.3390/electronics10020211.

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With the development of global navigation satellite systems (GNSS), multiple signals modulated on different sub-carriers are needed to provide various services and to ensure compatibility with previous signals. As an effective method to provide diversified signals without introducing the nonlinear distortion of High Power Amplifier (HPA), the multi-carrier constant envelope multiplexing is widely used in satellite navigation systems. However, the previous method does not consider the influence of sub-carrier frequency constraint on the multiplexing signal, which may lead to signal power leakage. By determining the signal states probability according to the sub-carrier frequency constraint and solving the orthogonal bases according to the homogeneous equations, this article proposed multi-carrier constant envelope multiplexing methods based on probability and homogeneous equations. The analysis results show that the methods can multiplex multi-carrier signals without power leakage, thereby reducing the impact on signal ranging performance. Meanwhile, the methods could reduce the computation complexity. In the case of three different carriers multiplexing, the number of optimization equations is reduced by nearly 66%.
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Yan, Liuming, Yuefei Ma, and Jorge M. Seminario. "Encoding Information Using Molecular Vibronics." Journal of Nanoscience and Nanotechnology 6, no. 3 (2006): 675–84. http://dx.doi.org/10.1166/jnn.2006.087.

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Signals carrying information are encoded in molecular vibrational waves (vibronics) rather than in electric currents as widely done in microelectronics. We demonstrate theoretically that signals can be transmitted along a long polypeptide molecule; the signal is modulated in a terahertz carrier corresponding to a frequency of an intrinsic vibrational mode of the backbone of the polypeptide, via amplitude and frequency modulations. The modulated carrier is coupled as a vibrational wave to the polypeptide at one end of the molecule and propagates for more than 168 Å towards the other end. Digital signal processing techniques are used to recover the modulated signals.
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Shaddad, R. Q., A. B. Mohammad, S. A. Al-Gailani, and A. M. Al-Hetar. "Optical Frequency Upconversion Technique for Transmission of Wireless MIMO-Type Signals over Optical Fiber." Scientific World Journal 2014 (2014): 1–14. http://dx.doi.org/10.1155/2014/170471.

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The optical fiber is well adapted to pass multiple wireless signals having different carrier frequencies by using radio-over-fiber (ROF) technique. However, multiple wireless signals which have the same carrier frequency cannot propagate over a single optical fiber, such as wireless multi-input multi-output (MIMO) signals feeding multiple antennas in the fiber wireless (FiWi) system. A novel optical frequency upconversion (OFU) technique is proposed to solve this problem. In this paper, the novel OFU approach is used to transmit three wireless MIMO signals over a 20 km standard single mode fiber (SMF). The OFU technique exploits one optical source to produce multiple wavelengths by delivering it to a LiNbO3external optical modulator. The wireless MIMO signals are then modulated by LiNbO3optical intensity modulators separately using the generated optical carriers from the OFU process. These modulators use the optical single-sideband with carrier (OSSB+C) modulation scheme to optimize the system performance against the fiber dispersion effect. Each wireless MIMO signal is with a 2.4 GHz or 5 GHz carrier frequency, 1 Gb/s data rate, and 16-quadrature amplitude modulation (QAM). The crosstalk between the wireless MIMO signals is highly suppressed, since each wireless MIMO signal is carried on a specific optical wavelength.
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Zhang, Chun Lei, Cai Hua Yan, and Hai Ling Chen. "Integrated Wireless and Wired Signal in the Hybrid Access System." Applied Mechanics and Materials 303-306 (February 2013): 2058–61. http://dx.doi.org/10.4028/www.scientific.net/amm.303-306.2058.

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To meet the demands of different high bandwidth services, we demonstrated a hybrid access network simultaneously transmitting wired and wireless signals. In the downstream, wireless signals are modulated and transmitted in phase modulation format at the optical carrier and wired signals are re-modulated in intensity modulation format, different de-modulation schemes are used at optical network unit (ONU) side; In the upstream, carrier reuse technology are adopted to re-modulate and transmit uplink signals to the optical line terminal (OLT). Simulation results show user ends could get acceptable performance of the wirless and wired signals.
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Nugroho, Prapto. "Design of a 20 Mbps OQPSK Modulator Based on Multiplexers." JURNAL INFOTEL 16, no. 4 (2024): 855–70. https://doi.org/10.20895/infotel.v16i4.1237.

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This paper aims to delve into the design and implementation aspects of an OQPSK (Offset Quadrature Phase Shift Keying) modulator within the context of modem technology, underscoring its pivotal role in contemporary information technology infrastructure. The research primarily focuses on elucidating the theoretical foundations of OQPSK modulation, which represents an enhancement of QPSK modulation techniques. Central to the design is the utilization of a multiplexer to select one carrier signal out of four, which is subsequently modulated by data bits. Furthermore, the modulator employs two square wave signals phased 90 degrees apart, which are transformed into differential sinusoidal signals to constitute the carrier signal. Operating frequencies encompass a 5 MHz streaming data bits frequency and a 10 MHz clock frequency. Simulation results validate the efficacy of the OQPSK modulator by demonstrating its capability to generate modulated signals at a robust data transfer rate of 20 Mbps. This underscores the modulator's effectiveness in transmitting digital data over analog communication channels. In conclusion, the designed OQPSK modulator exemplifies its proficiency in efficiently modulating and demodulating signals, thereby bolstering connectivity and communication across diverse societal sectors. This research contributes significantly to the advancement of modem technology, which is indispensable for the expansion and maintenance of modern communication networks, ensuring robust connectivity in the digital age.
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Dissertations / Theses on the topic "Modulated carrier signal"

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ESTEVES, EDUARDO ANTONIO DA SILVA. "CARRIER DISCOVERY FOR DETECTION OF TRELLIS-CODED MODULATED SIGNAL." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1993. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=8637@1.

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Este trabalho analisa algumas estratégias para decodificação de sinais TCM. Além disto, propõe-se uma nova estratégia que faz uso de um processamento por percurso sobrevivente na treliça de decodificação para gerar e atualizar, de acordo com um algoritmo do tipo PLL, um conjunto de estimativas de fase, cada uma associada a um estado da treliça, que são utilizadas simultaneamente no processo de decodificação. Expressões úteis para o direcionamento de parâmetros usados no algoritmo de estimação são apresentadas. Estas expressões foram baseadas em uma análise linear simplificada que considerou tanto o desempenho do estimador em estado estacionário quanto no período transiente. Resultados de desempenho obtidos, via simulação, com o uso do método proposto são comparados com resultados obtidos com outras estratégias para recuperação de portadora em sistemas TCM. Estes resultados mostram uma clara superioridade do método proposto para diversos tipos de erros de fase.<br>This thesis analyses some coherent decoding schemes for TCM signals reception. In addition, a new scheme, which makes use of a per survivor processing, is propoed. In this scheme, each trellis state has an associated phase estimate which is generated by a data-aided PLL-like algorithm, based on the survivor sequence associated to that state. Some useful expressions are developed to help the parameters selection for use on the estimation algorthm. These expressions are based on a simplified linear analysis which are carried out on both transient and stationary cases. We compare the proposed scheme performance to others schemes by means of computer simulation. These results show that the new scheme has better performance in terms of bit-error-rate.
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Law, Eugene. "How to Estimate the Unmodulated Carrier Power Level of a Modulated Telemetry Signal." International Foundation for Telemetering, 2006. http://hdl.handle.net/10150/604416.

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ITC/USA 2006 Conference Proceedings / The Forty-Second Annual International Telemetering Conference and Technical Exhibition / October 23-26, 2006 / Town and Country Resort & Convention Center, San Diego, California<br>This paper will present methods to both measure the unmodulated carrier power of a modulated signal and to estimate the unmodulated carrier power level from the measured power spectrum. The unmodulated carrier power level is needed to convert measured spectra into units of dBc.
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Žlebek, Lukáš. "Ekvalizace přenosového kanálu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2018. http://www.nusl.cz/ntk/nusl-377143.

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This thesis describes a design of a simulation of transmission of digital information via communication system and equalization of communication function. The layout of communication channel with multiway transmission is described in following part. Next part is about hardware modulator which generate modulated signal which is transmitted via communication channel and after is sampled by A/D convertion card to computer, where is equalizated and demodulated in Simulink. In the last part of this thesis, there is proposal of the laboratory task and its sample solution.
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HENRIQUES, HUMBERTO ABRANCHES. "INTERFERENCE ON DIGITAL CARRIERS DUE TO TV CARRIERS MODULATED BY ENERGY DISPERSION SIGNALS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1985. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=14055@1.

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EMPRESA BRASILEIRA DE TELECOMUNICAÇÕES<br>O uso cada vez mais disseminado de satélites para telecomunicações tem exigido um esforço crescente para acomodar a convivência de diversos sistemas dentro de limites toleráveis de interferência mútua. Em particular as portadoras de vídeo, normalmente de alta potência, tem sido ultimamente objeto de estudos visando a redução de seu potencial interferente. Este estudo analisa o emprego de diferentes formas de onda de dispersão de energia para portadoras de vídeo do ponto de vista de interferência em portadoras digitais de faixa estreita, do tipo SCPC (Single Channel Per Carrier - Portadora Singela Por Canal) e indica caminhos para a redução do seu potencial interferente através da escolha de ondas de dispersão alternativas.<br>The widespread use of satellites for communications demands na ever increasing effort from the telecommunications Agencies acceptable limits of mutual interference. The TV carriers, in particular, due to their high power characteristics, have been the subject of recent studies aimed at reducing their interference potential. The present work analyzes the use of different TV carrier energy dispersal waveforms from the point of view of interference into narrowband digital carriers, called SCPC (Single Channel Per Carrier), and indicates possible ways of reducing such interference potential through the appropriate choice of alternative energy dispersal waveforms.
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Nicoloso, Steven P. "An Investigation of Carrier Recovery Techniques for PSK Modulated Signals in CDMA and Mulipath Mobile Environments." Thesis, Virginia Tech, 1997. http://hdl.handle.net/10919/35869.

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The challenge of carrier recovery for digitally phase modulated, suppressed-carrier signals has been the target of much attention in mobile radio system design for many years. Code division multiple access (CDMA) cellular systems are now being deployed in mobile environments, and the performance of carrier recovery for CDMA is much less well understood. CDMA systems typically utilize lower bit energies, relying instead upon coding gain for reliable performance. As an additional challenge, the multiple access interference (MAI) inherent to direct-sequence spread-spectrum (DSSS) signalling further hampers many carrier recovery techniques. This thesis first surveys general carrier recovery strategies, conventional as well as new, and then applies them to the particular task of recovering a suppressed carrier in mobile CDMA systems. First some of the theory surrounding conventional, closed-loop, carrier recovery techniques and several newer open-loop estimation structures, based on the maximum likelihood (ML) principle is presented. A novel decision-feedback ML phase estimator is proposed. The statistical behavior of this new structure as well as the related squaring estimator are examined and are shown to be equivalent to the stochastic performance of classical closed-loop techniques. Candidate receivers based upon closed- and open-loop carrier recovery structures are proposed and then examined via simulation. Both forward and reverse cellular links are examined under a variety of both of single-path and multipath conditions. The notion of exploiting cyclostationary MAI in CDMA systems by applying adaptive receiver techniques is also examined, especially as this scheme relies to some extent upon coherent carrier recovery for its promising performance enhancements. This work concludes with recommendations of the best carrier recovery strategies for the variety of environments examined and suggestions for future research are made.<br>Master of Science
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Rifi, Mohamed Aziz. "Etude et conception d’un amplificateur de puissance en technologie GaN MMIC fonctionnant en bande K adapté aux systèmes de suivi d’enveloppe." Thesis, Limoges, 2021. http://www.theses.fr/2021LIMO0019.

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Ces travaux de thèse s’intègrent dans le cadre du processus d’amélioration continue de l’efficacité et de la linéarité des amplificateurs de puissance en présence des signaux sur porteuses modulées utilisés par les systèmes de télécommunications modernes.Ces signaux présentent un PAPR élevé et une distribution statistique d’enveloppe centrée en-deçà de la valeur crête d’enveloppe. De ce fait, les amplificateurs de puissance conventionnel (classe AB à polarisation fixe) sont souvent surdimensionnés pour répondre aux besoins des industriels télécoms. La technique de suivi d’enveloppe a été utilisée pour augmenter la PAE le long de l’OBO (10 dB pour LTE) tout en gardant un gain en puissance constant associé à une bonne linéarité en termes de conversion d’AM/AM. Une méthode de conception d’amplificateur de puissance en technologie MMIC fondé sur l’utilisation des HEMTs GaN a été développée et utilisée pour concevoir un AP délivrant une puissance de sortie de 4W et fonctionnant en bande K [17-20GHz]. L’AP réalisé a été ensuite couplé à un modulateur numérique de polarisation de drain. L’ensemble AP et modulateur de polarisation constituant un système de suivi d’enveloppe appelé APSE a été caractérisé en termes d’efficacité et de linéarité en présence de signaux modulés. L’APSE montre des performances très intéressantes comparées à celles obtenue avec un AP à polarisation fixe. En effet à un OBO de l’ordre de 7dB, dans la bande [17-20GHz], la PAE est améliorée de [10-7.5 points]. La PAE moyenne le long de l’OBO varie entre 32 et 36% sur la bande considérée et elle est associée à une EVM variant entre 5 à 1.6% avec une DPD quasi-statique appliquée au signal en bande de base. Les caractérisations de l’APSE ont démontré l’intérêt de l’utilisation des amplificateurs de puissance à suivi d’enveloppe dans les systèmes de télécommunications modernes<br>This thesis work is part of the process of continuous improvement of the efficiency and linearity of power amplifiers in presence of signals on modulated carriers used in modern telecommunications systems. These signals have a high PAPR and a statistical envelope distribution centered below the envelope peak value. As a result, conventional power amplifiers (Class AB fixed bias) are often oversized to meet the needs of the telecom industry. The envelope tracking technique has been used to increase the PAE along the OBO (10 dB for LTE) while maintaining a constant power gain associated to a good linearity in terms of AM/AM conversion. A power amplifier design method in MMIC technology based on the use of GaN HEMTs has been developed and is used to design an APdelivering an output power of 4W and operating in K-band [17-20GHz]. The realized APwas then coupled to a digital drain bias modulator. The APand bias modulator assembly constituting an envelope tracking system called APSE was characterized in terms of efficiency and linearity in presence of modulated signals. The APSE shows very interesting performances compared to those obtained with a fixed bias AP. Indeed, at an OBO of about 7dB, in the [17-20GHz] band, the PAE is improved by [10-7.5]. The average PAE along the OBO varies between 32 and 36% over the considered band and it is associated to an EVM varying between 5 and 1.6% with a quasi-static DPD applied to the baseband signal.The characterizations of APSE have demonstrated the interest of the use of envelope tracking power amplifiers in modern telecommunications systems
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Šrámek, Petr. "Implementace softwarového rádia do FPGA." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-217786.

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The common objective of this project is implementation of software defined radio (SDR) into FPGA. The text contains review and comparison of several hardware concepts intended for SDRs implementation then the methods for digital implementation of various components of radios as the filters, mixers and others are mentioned. Part of the text introduces used hardware platform and describes software support for designing, simulations and implementation into hardware. Significant part of project describes complex of external hardware components as filter, amplifier and control panel designed and built within the project realization. But the main part of project demonstrates design of the software solution of radio receiver. There is specified architecture of radio for FM broadcast receiving, next the more complex systems with carrier recovery algorithm are presented. These systems are able to work with AM, BPSK and QPSK modulations. It is possible to implement all these receivers into hardware and verify their operation. The practical laboratory theme has been outlined within the project run.
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Gleissner, Filip. "Koexistence mobilních komunikačních systémů GSM-EDGE a UMTS." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-233470.

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The dissertation thesis deals with the investigation of the coexistence of GSM–EDGE and UMTS systems with focus on the physical layer of the systems. The aim is to provide a set of recommendations for practical cooperation while the systems operate in both the separated and the common radio bands. A detailed description of signal processing of both the systems on the physical layer is presented. On the basis of this description, models of both systems were created and implemented in the MATLAB environment. The simulations are focused on the physical layer quality parameters, especially the bit error ratio evaluation for various ratios of useful signal power to noise power during the transmission over the radio channel. Simulation is also used to examine the quality of received useful signal while it is interfered by signals from the same and adjacent channels. The purpose is to determine the isolation between these adjacent channels, when the bit error ratio of the useful signal does not exceed a certain reference value. The simulation results are subsequently subjected to comparison with the results of the experimental measurements in laboratory conditions. Before the measurements are carried out, a study of possible interference types is performed. Consequently, the crucial parameters of the measuring equipment used are verified. From the results of simulations and measurements, the proposal of a minimum and recommended carrier separation between both the systems is presented in order to efficiently utilize the assigned frequency spectrum. Furthermore, for the cooperation in both the separated and the common radio bands, the necessary precautions are given for reaching the required isolation and thereby inter-system interference minimization.
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Nelson, Christopher David. "Characterization of Beta-arrestin-Modulated Lipid Kinase Activities for Diacylglycerol and Phosphatidylinositol 4-Phosphate." Diss., 2007. http://hdl.handle.net/10161/206.

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Sekerefeli, Mehmet Sevki, and Daniel C. Bukofzer. "Direct bit detection receiver performance analyses for 8-DPSK and 16-DPSK modulated signals operating with improper carrier phase synchronization." Thesis, 1987. http://hdl.handle.net/10945/22245.

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Books on the topic "Modulated carrier signal"

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R, Kumar. A novel multistage estimation of the signal parameters of a possibly data-modulated sinusoid under very high dynamics. National Aeronautics and Space Administration, Jet Propulsion Laboratory, California Institute of Technology, 1989.

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Veshkurtsev, Yury. THE FOUNDATIONS OF THE THEORY OF CONSTRUCTION OF NEW-GENERATION MODEMS. AUS PUBLISHERS, 2022. http://dx.doi.org/10.26526/monography_628a8925151ca0.71125494.

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The monography presents the fundamentals of the theory of construction&#x0D; new-generation modems. Modems are built on the principles of statistical&#x0D; communication theory, based on the use of a random signal (chaos) as a carrier&#x0D; of information. In such a signal, a characteristic function is modulated, which&#x0D; is a fundamental characteristic of a random process. The signal modulation and&#x0D; demodulation method is patented and allows you to create modems with efficiency&#x0D; and noise immunity indicators several orders of magnitude higher than those&#x0D; of the known devices of the same name. New-generation modems immediately&#x0D; improve the technical characteristics of digital IT equipment by several orders&#x0D; of magnitude, since they work without errors in wired and radio channels when&#x0D; receiving one hundred duodecillion of binary symbols.&#x0D; The book is recommended for scientists and specialists in the field of digital&#x0D; communication systems, statistical radio engineering and instrumentation, and&#x0D; may be useful for graduate students, masters and students of relevant specialties.
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Sekerefeli, Mehmet Sevki. Direct bit detection receiver performance analyses for 8-DPSK and 16-DPSK modulated signals operating with improper carrier phase synchronization. 1987.

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Book chapters on the topic "Modulated carrier signal"

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Harris, John, and Larry M. Hyman. "Segmental Prominence and the Modulated Carrier Signal." In Current Issues in Descriptive Linguistics and Digital Humanities. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-2932-8_35.

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Huang, Xinming, Zhang Ke, Jingyuan Li, Zengjun Liu, and Gang Ou. "DPCCRW: An Unambiguous Acquisition Technique for High-Order Binary Offset Carrier Modulated Signal." In Lecture Notes in Electrical Engineering. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-3146-7_42.

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Veshkurtsev, Yury. "QUASI-DETERMINISTIC SIGNALS." In THE FOUNDATIONS OF THE THEORY OF CONSTRUCTION OF NEW-GENERATION MODEMS. AUS PUBLISHERS, 2022. http://dx.doi.org/10.26526/chapter_628a8925285cd4.45558771.

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The monography presents the fundamentals of the theory of construction new-generation modems. Modems are built on the principles of statistical communication theory, based on the use of a random signal (chaos) as a carrier of information. In such a signal, a characteristic function is modulated, which is a fundamental characteristic of a random process. The signal modulation and demodulation method is patented and allows you to create modems with efficiency and noise immunity indicators several orders of magnitude higher than those of the known devices of the same name. New-generation modems immediately improve the technical characteristics of digital IT equipment by several orders of magnitude, since they work without errors in wired and radio channels when receiving one hundred duodecillion of binary symbols. The book is recommended for scientists and specialists in the field of digital communication systems, statistical radio engineering and instrumentation, and may be useful for graduate students, masters and students of relevant specialties.
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Veshkurtsev, Yury. "CHARACTERISTIC FUNCTION." In THE FOUNDATIONS OF THE THEORY OF CONSTRUCTION OF NEW-GENERATION MODEMS. AUS PUBLISHERS, 2022. http://dx.doi.org/10.26526/chapter_628a8925276245.43662054.

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The monography presents the fundamentals of the theory of construction new-generation modems. Modems are built on the principles of statistical communication theory, based on the use of a random signal (chaos) as a carrier of information. In such a signal, a characteristic function is modulated, which is a fundamental characteristic of a random process. The signal modulation and demodulation method is patented and allows you to create modems with efficiency and noise immunity indicators several orders of magnitude higher than those of the known devices of the same name. New-generation modems immediately improve the technical characteristics of digital IT equipment by several orders of magnitude, since they work without errors in wired and radio channels when receiving one hundred duodecillion of binary symbols. The book is recommended for scientists and specialists in the field of digital communication systems, statistical radio engineering and instrumentation, and may be useful for graduate students, masters and students of relevant specialties.
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Veshkurtsev, Yury. "NOISE IMMUNITY OF THE MODEM IN THE CHANNEL WITH "NON- WHITE" NOISE." In THE FOUNDATIONS OF THE THEORY OF CONSTRUCTION OF NEW-GENERATION MODEMS. AUS PUBLISHERS, 2022. http://dx.doi.org/10.26526/chapter_628a89252b5337.85338589.

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The monography presents the fundamentals of the theory of construction new-generation modems. Modems are built on the principles of statistical communication theory, based on the use of a random signal (chaos) as a carrier of information. In such a signal, a characteristic function is modulated, which is a fundamental characteristic of a random process. The signal modulation and demodulation method is patented and allows you to create modems with efficiency and noise immunity indicators several orders of magnitude higher than those of the known devices of the same name. New-generation modems immediately improve the technical characteristics of digital IT equipment by several orders of magnitude, since they work without errors in wired and radio channels when receiving one hundred duodecillion of binary symbols. The book is recommended for scientists and specialists in the field of digital communication systems, statistical radio engineering and instrumentation, and may be useful for graduate students, masters and students of relevant specialties.
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Veshkurtsev, Yury. "COMPUTER SIMULATION OF THE MODEM." In THE FOUNDATIONS OF THE THEORY OF CONSTRUCTION OF NEW-GENERATION MODEMS. AUS PUBLISHERS, 2022. http://dx.doi.org/10.26526/chapter_628a89252ca618.76723701.

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Abstract:
The monography presents the fundamentals of the theory of construction new-generation modems. Modems are built on the principles of statistical communication theory, based on the use of a random signal (chaos) as a carrier of information. In such a signal, a characteristic function is modulated, which is a fundamental characteristic of a random process. The signal modulation and demodulation method is patented and allows you to create modems with efficiency and noise immunity indicators several orders of magnitude higher than those of the known devices of the same name. New-generation modems immediately improve the technical characteristics of digital IT equipment by several orders of magnitude, since they work without errors in wired and radio channels when receiving one hundred duodecillion of binary symbols. The book is recommended for scientists and specialists in the field of digital communication systems, statistical radio engineering and instrumentation, and may be useful for graduate students, masters and students of relevant specialties.
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Veshkurtsev, Yury. "NOISE IMMUNITY OF THE MODEM IN THE CHANNEL WITH "WHITE" NOISE." In THE FOUNDATIONS OF THE THEORY OF CONSTRUCTION OF NEW-GENERATION MODEMS. AUS PUBLISHERS, 2022. http://dx.doi.org/10.26526/chapter_628a89252a3fa2.30236651.

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Abstract:
The monography presents the fundamentals of the theory of construction new-generation modems. Modems are built on the principles of statistical communication theory, based on the use of a random signal (chaos) as a carrier of information. In such a signal, a characteristic function is modulated, which is a fundamental characteristic of a random process. The signal modulation and demodulation method is patented and allows you to create modems with efficiency and noise immunity indicators several orders of magnitude higher than those of the known devices of the same name. New-generation modems immediately improve the technical characteristics of digital IT equipment by several orders of magnitude, since they work without errors in wired and radio channels when receiving one hundred duodecillion of binary symbols. The book is recommended for scientists and specialists in the field of digital communication systems, statistical radio engineering and instrumentation, and may be useful for graduate students, masters and students of relevant specialties.
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Veshkurtsev, Yury. "NEW GENERATION MODEMS." In THE FOUNDATIONS OF THE THEORY OF CONSTRUCTION OF NEW-GENERATION MODEMS. AUS PUBLISHERS, 2022. http://dx.doi.org/10.26526/chapter_628a8925294ef3.45691649.

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Abstract:
The monography presents the fundamentals of the theory of construction new-generation modems. Modems are built on the principles of statistical communication theory, based on the use of a random signal (chaos) as a carrier of information. In such a signal, a characteristic function is modulated, which is a fundamental characteristic of a random process. The signal modulation and demodulation method is patented and allows you to create modems with efficiency and noise immunity indicators several orders of magnitude higher than those of the known devices of the same name. New-generation modems immediately improve the technical characteristics of digital IT equipment by several orders of magnitude, since they work without errors in wired and radio channels when receiving one hundred duodecillion of binary symbols. The book is recommended for scientists and specialists in the field of digital communication systems, statistical radio engineering and instrumentation, and may be useful for graduate students, masters and students of relevant specialties.
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Edstrom, Brent. "FM Synthesis." In Sound & Music Projects for Eurorack and Beyond. Oxford University PressNew York, NY, 2024. http://dx.doi.org/10.1093/9780197514504.003.0005.

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Abstract This chapter examines the extent of FM synthesis and how it can be achieved with Teensy microcontrollers. It introduces Frequency Modulation (FM) as a category of synthesis popularized by Yamaha’s DX7 in the 1980s. The core concept of FM synthesis revolves around one periodic signal that is used to modulate another signal called the carrier wave or modulated signal. The chapter then details how to create sidebands at frequencies equal to the carrier frequency plus and minus integer multiples of the modulator frequency. It explains that hands-on experimentation will provide a good foundation for more advanced applications even though the FM synthesizer project is relatively simple.
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Kaur, Inderjeet. "Frequency Domain Equalization and Adaptive OFDM vs. Single Carrier Modulation." In Innovations in Mobile Multimedia Communications and Applications. IGI Global, 2011. http://dx.doi.org/10.4018/978-1-60960-563-6.ch009.

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In the present article an attempt is made to compare multi-carrier and single carrier modulation schemes for wireless communication systems with the utilization of fast Fourier transform (FFT) and its inverse in both cases. With the assumption that in OFDM (orthogonal frequency division multiplexing), the inverse FFT transforms the complex amplitudes of the individual sub-carriers at the transmitter into time domain, the inverse operation is carried out at the receiver. In case of single carrier modulation, the FFT and its inverse are used at the input and output of the frequency domain equalizer in the receiver. Different single carrier and multi-carrier transmission systems are simulated with time-variant transfer functions measured with a wideband channel sounder. In case of OFDM, the individual sub-carriers are modulated with fixed and adaptive signal alphabets. Furthermore, a frequency-independent as well as the optimum power distribution are used. Single carrier modulation uses a single carrier, instead of the hundreds or thousands typically used in OFDM, so the peak-to-average transmitted power ratio for single carrier modulated signals is smaller. This in turn means that a SC system requires a smaller linear range to support a given average power. This enables the use of cheaper power amplifier as compared to OFDM system.[Article copies are available for purchase from InfoSci-on-Demand.com]
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Conference papers on the topic "Modulated carrier signal"

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Bernabeu, Joan, Lorenzo Ortega, Antoine Blais, Yoan Grégoire, and Eric Chaumette. "Delay Estimation with a Carrier Modulated by a Band-Limited Signal." In 2024 32nd European Signal Processing Conference (EUSIPCO). IEEE, 2024. http://dx.doi.org/10.23919/eusipco63174.2024.10715390.

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Fang, Xiansong, Yixiao Zhu, Xiang Cai, Xian Zhou, Weisheng Hu, and Fan Zhang. "Modulated Remote LO Enabled 1.92-Tb/s 5-dimensional Coherent Transmission over 10-km SSMF." In Optical Fiber Communication Conference. Optica Publishing Group, 2025. https://doi.org/10.1364/ofc.2025.th1d.4.

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We demonstrate 1.92-Tb/s line rate 5-dimensional coherent transmission over 10-km SSMF by modulating signal and remote LO simultaneously. The remote LO is modulated with an SSB signal, retaining a residual carrier for phase noise mitigation.
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Zhang, Jiarong, Yihan Li, and Li Yi. "Synthesis of rapid and highly-linear frequency-stepping optical carriers over 100 GHz bandwidth." In CLEO: Applications and Technology. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/cleo_at.2024.jtu2a.103.

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Zhang, Ziheng, Yixiao Zhu, Guangying Yang, et al. "Rate-Flexible Coherent TFDM PON with Transparent Digital Signal Processing Aided by Residual Carrier." In Signal Processing in Photonic Communications. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/sppcom.2024.spm4h.5.

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We leverage modulator finite extinction ratio-induced residual carrier for transparent digital signal processing in coherent time-frequency-division-multiplexing PON. We experimentally demonstrate flexible data rates from 100-Gb/s to 300-Gb/s after 20-km SSMF transmission with a 112-ns preamble.
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Singh, Manuj, Xinchang Zhang, Deniz Onural, et al. "RF-optical signal conversion via Dual Active-Cavity modulator in a Monolithic Electronic-Photonic SOI Platform." In Frontiers in Optics. Optica Publishing Group, 2024. https://doi.org/10.1364/fio.2024.fth1d.4.

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We demonstrate a Dual Active-Cavity RF modulator combining T-shaped spoked junction with a novel “half-rib” waveguide in a monolithic electronic-photonic platform. We measure a sideband efficiency of -52 dB at 66 GHz RF carrier frequency.
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Nekrasov, I. S. "Tracking Wide Band Signals Radio Receivers Noise Immunity with Additive Frequency Modulation in the Case of Carrier Frequency Modulated by Information Communication." In EMC_1990_Wroclaw. IEEE, 1990. https://doi.org/10.23919/emc.1990.10833105.

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Videm, Ketil. "The Anodic Behaviour of Iron and Steel in Aqueous Solutions with CO2, HCO3−,CO32− and Cl−." In CORROSION 2000. NACE International, 2000. https://doi.org/10.5006/c2000-00039.

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Abstract Laboratory experiments were carried out in deoxygenated brine with one bar CO2 and different concentrations of hydrogen carbonate. The experiments were of short duration, usually less than two hours. The electrochemical techniques used were cyclic voltametry and electrochemical impedance spectroscopy (EIS). The cyclic voltammetry was performed with an AC modulated signal, so also impedance at a given frequency was obtained besides the DC results. The anodic dissolution rate below a pH about 6 took place with two different mechanisms. The change of mechanism presented itself in cyclic voltammetry by a maximum in the dissolution rate and a minimum in impedance. The anodic reactions did not follow Butler-Volmer kinetics. Impedance studies suggest that adsorption phenomena controlled the kinetics. For HCO3− concentration above 0.1 M carbon steel exhibited real passivity above a critical potential in chloride free solutions. When the potential was lowered in the back scan of cyclic voltammetry, significant changes of the film occurred, including reduction of iron in the passive film from the three-to two-valent state. Passivity was maintained despite large changes of the properties of the passive film. Chloride induced passivity breakdown and localized attack occurred above a pitting potential. However, the pitting potentials where this occurred were much higher than the corrosion potential of steels exposed to the formation water from oil-and gas wells.
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Che, A. V. N., G. L. Bilbro, H. Krim, M. El Badaoui, and F. Guillet. "A novel approach to decompose a modulated broadband carrier." In 2010 IEEE International Conference on Acoustics, Speech and Signal Processing. IEEE, 2010. http://dx.doi.org/10.1109/icassp.2010.5495046.

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Thuillier, Etienne, and Jarmo Lunden. "Cyclostationarity-based detection and identification of binary offset carrier-modulated signals." In 2015 23rd European Signal Processing Conference (EUSIPCO). IEEE, 2015. http://dx.doi.org/10.1109/eusipco.2015.7362774.

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Gao, Yuliang, John C. Cartledge, Aazar S. Kashi, Scott S. H. Yam, and Yasuhiro Matsui. "112 Gb/s Single-Carrier PAM-4 Using a Directly Modulated Laser." In Signal Processing in Photonic Communications. OSA, 2016. http://dx.doi.org/10.1364/sppcom.2016.spm2e.2.

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Reports on the topic "Modulated carrier signal"

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Don, Michael. Carrier Tracking of Phase Modulated Signals with a Phase-Lock Loop. DEVCOM Army Research Laboratory, 2022. http://dx.doi.org/10.21236/ad1161786.

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