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Journal articles on the topic 'Users-Receivers'

Author: Grafiati

Published: 22 June 2024

Last updated: 31 July 2025

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1

Alemany, Jose, Elena Del Val, and Ana María García-Fornes. "“Who should I grant access to my post?”: Identifying the most suitable privacy decisions on online social networks." Internet Research 31, no. 4 (2021): 1290–317. http://dx.doi.org/10.1108/intr-03-2020-0128.

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PurposeOnline social networks (OSNs) provide users with mechanisms such as social circles and individual selection to define the audiences (i.e., privacy policy) of the shared information. This privacy decision-making process is a hard and tedious task for users because they have to assess the cost-benefit in a complex environment. Moreover, little is known about how users assess the cost-benefit of matching the elements of online communication and their interests. Therefore, the purpose of this paper is to develop and test a research model to understand the impact that the types of receivers

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Pavlovčič-Prešeren, Polona, Franc Dimc, and Matej Bažec. "A Comparative Analysis of the Response of GNSS Receivers under Vertical and Horizontal L1/E1 Chirp Jamming." Sensors 21, no. 4 (2021): 1446. http://dx.doi.org/10.3390/s21041446.

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Jamming is becoming a serious threat to various users of global navigation satellite systems (GNSS). Therefore, live monitoring tests are required to estimate the sensitivity range of GNSS receivers under jamming. This study analyses the response of some mass-market and professional-grade receivers to intentional interferences based on different 3D jammer positions. First, the vertical jamming was investigated, followed by a horizontal experiment where the receivers were placed at three locations while the jammer was moving within a triangular area. The aim was to determine a fingerprint of th

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Hirsch, Christian, Benedikt Jahnel, Paul Keeler, and Robert I. A. Patterson. "Large deviation principles for connectable receivers in wireless networks." Advances in Applied Probability 48, no. 4 (2016): 1061–94. http://dx.doi.org/10.1017/apr.2016.65.

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AbstractWe study large deviation principles for a model of wireless networks consisting of Poisson point processes of transmitters and receivers. To each transmitter we associate a family of connectable receivers whose signal-to-interference-and-noise ratio is larger than a certain connectivity threshold. First, we show a large deviation principle for the empirical measure of connectable receivers associated with transmitters in large boxes. Second, making use of the observation that the receivers connectable to the origin form a Cox point process, we derive a large deviation principle for the

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Januszewski, Jacek. "GNSS Receivers, Theirs Features, User Environment And Applications." Annual of Navigation 21, no. 1 (2014): 49–58. http://dx.doi.org/10.1515/aon-2015-0004.

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AbstractSince many years the coordinates of the position can be obtained with the use of satellite navigation and augmentation systems, SNS and SBAS, respectively. All these systems are called GNSS (Global Navigation Satellite Systems). The main task of the user segment is to transform the products delivered by the GNSS infrastructure into services that users are mainly interested in. That's why GNSS receiver selection depends on user application. Nowadays several hundred different receivers provided by more than one hundred manufacturers are available on the world market. The review of the pe

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Yoshida, Masakazu, Ayumu Nakayama, and Jun Cheng. "Distinguishability and Disturbance in the Quantum Key Distribution Protocol Using the Mean Multi-Kings’ Problem." Entropy 22, no. 11 (2020): 1275. http://dx.doi.org/10.3390/e22111275.

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We introduce a quantum key distribution protocol using mean multi-kings’ problem. Using this protocol, a sender can share a bit sequence as a secret key with receivers. We consider a relation between information gain by an eavesdropper and disturbance contained in legitimate users’ information. In BB84 protocol, such relation is known as the so-called information disturbance theorem. We focus on a setting that the sender and two receivers try to share bit sequences and the eavesdropper tries to extract information by interacting legitimate users’ systems and an ancilla system. We derive trade-

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ARGÜELLO, FRANCISCO, MANUEL BUGALLO, and MARGARITA AMOR. "MULTI-USER RECEIVERS FOR SPREAD SPECTRUM COMMUNICATIONS BASED ON CHAOTIC SEQUENCES." International Journal of Bifurcation and Chaos 12, no. 04 (2002): 847–53. http://dx.doi.org/10.1142/s0218127402004723.

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Spread spectrum based on chaotic sequences is an alternative to spread spectrum based on pseudo-noise sequences. In this letter we present the application of two multi-user detection methods (parallel and successive interference cancellation schemes) to this type of code division multiple access. We demonstrate that, also for chaotic sequence-based communications, multi-user receivers significantly improve the BER with respect to single-user receivers, and that their use is practically essential with a high number of users.

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Gabino-Campos, María Auxiliadora. "Children and young people as virtual and interactive users and receivers." Comunicar 11, no. 22 (2004): 121–25. http://dx.doi.org/10.3916/c22-2004-18.

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The speed in messages transmission and in the accesibility to the Internet and other technological advances have increased users and receivers intervention in mass media and have given us another way of interpersonal communication, the virtual one. This p La velocidad en la transmisión de mensajes y la accesibilidad a Internet y a los nuevos avances tecnológicos, como los sufridos en la telefonía, han incrementado la intervención de los usuarios o receptores en los medios de comunicación de masas y han proporcionado otra forma de comunicación interpersonal, la virtual. Este trabajo trata de di

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Popescu, Dimitrie. "Interference suppressing OFDM UWB system with multiple users and MMSE receivers." IEEE Communications Letters 11, no. 12 (2007): 925–27. http://dx.doi.org/10.1109/lcomm.2007.071374.

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Farah, Ashraf. "Variation of Static-PPP Positioning Accuracy Using GPS-Single Frequency Observations (Aswan, Egypt)." Artificial Satellites 52, no. 2 (2017): 19–26. http://dx.doi.org/10.1515/arsa-2017-0003.

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Abstract Precise Point Positioning (PPP) is a technique used for position computation with a high accuracy using only one GNSS receiver. It depends on highly accurate satellite position and clock data rather than broadcast ephemeries. PPP precision varies based on positioning technique (static or kinematic), observations type (single or dual frequency) and the duration of collected observations. PPP-(dual frequency receivers) offers comparable accuracy to differential GPS. PPP-single frequency receivers has many applications such as infrastructure, hydrography and precision agriculture. PPP us

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10

Argüello, Francisco, Manuel Bugallo, and Juan López. "Blind Multiuser Receivers for Chaos Based Communications." International Journal of Bifurcation and Chaos 13, no. 08 (2003): 2353–59. http://dx.doi.org/10.1142/s0218127403008028.

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Recently, there has been a good deal of interest in the use of chaotic signals for direct sequence code division multiple access (DS-CDMA) communication systems. The capacity of DS-CDMA systems is interference-limited, and can therefore be increased by techniques that suppress interference. This letter is devoted to the evaluation of the impact of blind multiuser detection techniques on chaos based DS-CDMA systems. Blind receivers can suppress multiple access interference and do not require knowledge of the code sequences and propagation channels of the interference. We demonstrate that, for c

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Covaciu, Dinu, Ion Preda, Dragoş Sorin Dima, and Anghel Chiru. "Study on the Possibility to Estimate the Vehicle Side Slip Using Two Independent GPS Receivers." Applied Mechanics and Materials 822 (January 2016): 321–30. http://dx.doi.org/10.4028/www.scientific.net/amm.822.321.

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Slip angle is the difference between the direction a vehicle is travelling and the longitudinal plane of the vehicle body. Knowing vehicle sideslip angle accurately is critical for active safety systems such as Electronic Stability Program (ESP). Vehicle sideslip angle can be measured using optical speed sensors, inertial sensors and/or dual-antenna GPS receivers. These systems are expensive and their use is limited for many users. The goal of this paper is to analyze the possibility to estimate the vehicle sideslip angle, in real-time, by using two low-cost single-antenna GPS receivers.

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Regis, Carlos D. M., Raissa B. Rocha, Mylene C. Q. Farias, and Marcelo S. Alencar. "Objective and Subjective Evaluation of Spatially Transcoded Videos for Mobile Receivers." Journal of Communications Software and Systems 6, no. 2 (2010): 49. http://dx.doi.org/10.24138/jcomss.v6i2.189.

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Digital television produces video signals with different bit rates, encoding formats, and spatial resolutions. To deliver video to users with different receivers, the content needs to be dynamically adapted. Transcoding devices convert video from one format into another. The reception of digital videos using mobile receivers, implies that the spatial resolution of the video must be adjusted to fit the small display. This paper presents subjective and objective quality analysis of spatially transcoded videos. Transcoding algorithms that downsample the video frames using the moving average, medi

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Li, Ching, Chia-Wen Lee, Tzu-Chun Huang, and Wei-Shiang Lai. "Perspectives of Platform Operators, Content Producers, and Information Receivers toward Health and Fitness Apps." Information 11, no. 10 (2020): 481. http://dx.doi.org/10.3390/info11100481.

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The interactive mechanism among platform operators, content producers, and information receivers is increasingly complex in human–computer symbiosis. The purpose of this study is to identify the interactive value among platform operators, content producers, and information receivers with regard to information through the health and fitness apps by adopting an advanced Analytic Hierarchy Process (AHP) method derived from professional perspectives of app users and operators, key opinion leaders, scholars, and officers. The AHP method was allocated weightings to the evaluation criteria from the t

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Mourier, Johann, Nathan Charles Bass, Tristan L. Guttridge, Joanna Day, and Culum Brown. "Does detection range matter for inferring social networks in a benthic shark using acoustic telemetry?" Royal Society Open Science 4, no. 9 (2017): 170485. http://dx.doi.org/10.1098/rsos.170485.

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Accurately estimating contacts between animals can be critical in ecological studies such as examining social structure, predator–prey interactions or transmission of information and disease. While biotelemetry has been used successfully for such studies in terrestrial systems, it is still under development in the aquatic environment. Acoustic telemetry represents an attractive tool to investigate spatio-temporal behaviour of marine fish and has recently been suggested for monitoring underwater animal interactions. To evaluate the effectiveness of acoustic telemetry in recording interindividua

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Sodagari, Shabnam, Hamid Jafarkhani, and Homayoun Yousefi'zadeh. "Improved Cognitive Radio Receivers Using Timing Mismatch of Primary and Secondary Users." IEEE Transactions on Circuits and Systems II: Express Briefs 66, no. 6 (2019): 948–52. http://dx.doi.org/10.1109/tcsii.2018.2870840.

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Nuwanpriya, Asanka, Siu-Wai Ho, and Chung Shue Chen. "Indoor MIMO Visible Light Communications: Novel Angle Diversity Receivers for Mobile Users." IEEE Journal on Selected Areas in Communications 33, no. 9 (2015): 1780–92. http://dx.doi.org/10.1109/jsac.2015.2432514.

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Lee, Chia-Wen, Tzu-Chun Huang, Wei-Shiang Lai, and Ching Li. "Sustainability of Health and Fitness Information Platform Ecosystem." Sustainability 13, no. 10 (2021): 5560. http://dx.doi.org/10.3390/su13105560.

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The roles of content producers, information receivers, and platform operators affect the stability of the governance of informational platforms. The purpose of this study was to identify and explore the sustainable factors of a platform ecosystem for health and fitness apps across Mainland China and Taiwan by interviewing producers, receivers, and operators. An advanced analytic hierarchy process (AHP) method was applied to derive expert perspectives from apps users and operators, live streamers, key opinion leaders, scholars, and officers across Mainland China and Taiwan via four dimensions a

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18

Devi Kh, Chetna, and Malode Vishwanatha Panduranga Rao. "Implementation of global navigation satellite system softwaredefined radio baseband processing algorithms in system on chip." IAES International Journal of Artificial Intelligence (IJ-AI) 13, no. 4 (2024): 3869. http://dx.doi.org/10.11591/ijai.v13.i4.pp3869-3878.

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<p>The global navigation satellite system (GNSS) is an international navigation system that determines users' locations globally using a constellation of satellites. Conventional hardware-based receivers often face challenges related to cost-effectiveness and lack of reconfigurability. To address these issues, GNSS software receivers have emerged, executing baseband processing methods on host computers. However, host PC-based GNSS software receivers encounter obstacles during real-time signal acquisition, such as computational complexity and data loss. This research paper introduces a re

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Chetna, Devi Kh, and Vishwanatha Panduranga Rao Malode. "Implementation of global navigation satellite system software defined radio baseband processing algorithms in system on chip." IAES International Journal of Artificial Intelligence (IJ-AI) 13, no. 4 (2024): 3869–78. https://doi.org/10.11591/ijai.v13.i4.pp3869-3878.

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The global navigation satellite system (GNSS) is an international navigation system that determines users' locations globally using a constellation of satellites. Conventional hardware-based receivers often face challenges related to cost-effectiveness and lack of reconfigurability. To address these issues, GNSS software receivers have emerged, executing baseband processing methods on host computers. However, host PC-based GNSS software receivers encounter obstacles during real-time signal acquisition, such as computational complexity and data loss. This research paper introduces a real-time s

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Gao, Ronghai, Jiwen Zeng, and Lunzhi Deng. "An efficient certificateless multi-receiver threshold decryption scheme." RAIRO - Theoretical Informatics and Applications 53, no. 1-2 (2019): 67–84. http://dx.doi.org/10.1051/ita/2019001.

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Threshold decryption allows only quorum cooperate users to decrypt ciphertext encrypted under a public key. However, such threshold decryption scheme cannot be applied well in this situation where all users have their public and private key pairs, but do not share any private keys corresponding to the public keys, such as mobile network featured with dynamic character. The direct way to achieve threshold decryption in this case is to divide the message into several pieces and then encrypt these pieces with the public keys of different users. However, this is very inefficient. Multireceiver thr

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Zuberi, Habib H., Songzuo Liu, and Mohammad Bilal. "Downlink Non-Orthogonal multiple access underwater acoustic communication receiver design Deep neural network." Journal of the Acoustical Society of America 154, no. 4_supplement (2023): A250. http://dx.doi.org/10.1121/10.0023449.

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Downlink non-orthogonal multiple access (NOMA) is necessary to handle the underwater acoustic channel's limitations on bandwidth. NOMA downlink underwater acoustic (UWA) communication transmits data symbols from a source station to many users. Superimposed coding with variable power levels allows successive interference cancelation (SIC) receivers to decode data. However, SIC receivers require knowledge of channel conditions and channel state information (CSI). This is difficult to acquire, particularly in UWA communication. To address this problem, this paper proposes downlink underwater acou

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Angelosante, Daniele, Ezio Biglieri, and Marco Lops. "Low-complexity receivers for multiuser detection with an unknown number of active users." Signal Processing 90, no. 5 (2010): 1486–95. http://dx.doi.org/10.1016/j.sigpro.2009.10.019.

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23

Gučević, Jelena, Siniša Delčev, and Olivera Vasović Šimšić. "Practical Limitations of Using the Tilt Compensation Function of the GNSS/IMU Receiver." Remote Sensing 16, no. 8 (2024): 1327. http://dx.doi.org/10.3390/rs16081327.

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The research in this paper is related to the accuracy of the tilt compensation function of the GNSS/IMU receivers, which were examined in an open sky environment. The purpose of the paper is to point out to geodesists the conditions and limitations of using GNSS/IMU technology in precise measurements to not jeopardize the coordinate’s accuracy. The environment in which the measurement is made affects the quality of the GNSS signal and can limit the visibility of the satellite, leading to larger errors in the measurement. In this experiment, the current performance of the GNSS/IMU receivers was

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Li, Xie, and Ren Yanli. "Efficient Anonymous Identity-Based Broadcast Encryption without Random Oracles." International Journal of Digital Crime and Forensics 6, no. 2 (2014): 40–51. http://dx.doi.org/10.4018/ijdcf.2014040103.

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Broadcast encryption provides a method of secure multi-receiver communications, where a broadcaster can encrypt a message for a set S of users who are listening to a broadcast channel. Most identity-based broadcast encryption (IBBE) schemes are not anonymous, which means the attacker can obtain the identities of all receivers from the ciphertext. In this paper, the authors propose an efficient anonymous IBBE scheme in bilinear groups of prime order, where any attacker cannot get the identities of the receivers from the ciphertext. The scheme has constant size ciphertext and achieves adaptive s

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Heupel, M. R., J. M. Semmens, and A. J. Hobday. "Automated acoustic tracking of aquatic animals: scales, design and deployment of listening station arrays." Marine and Freshwater Research 57, no. 1 (2006): 1. http://dx.doi.org/10.1071/mf05091.

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The recent introduction of low-cost, moored data-logging acoustic receivers has provided opportunities for tracking marine organisms over small (hundreds of metres) and large scales (hundreds of kilometres). Acoustic receivers have been deployed in many different environments to examine specific hypotheses regarding the movement of aquatic species. This technology provides many advantages for studying aquatic animal movement patterns, but also has limitations and provides unique difficulties for users. Study design, applications, advantages and limitations are discussed with examples from past

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Wang, Qixing, Ting Zhou, Hanzhong Zhang, Honglin Hu, Edison Pignaton de Freitas, and Songlin Feng. "Deep Learning-Based Detection Algorithm for the Multi-User MIMO-NOMA System." Electronics 13, no. 2 (2024): 255. http://dx.doi.org/10.3390/electronics13020255.

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Recently, non-orthogonal multiple access (NOMA) has become prevalent in 5G communication. However, the traditional successive interference cancellation (SIC) receivers for NOMA still encounter challenges. The near-far effect between the users and the base stations (BS) results in a higher bit error rate (BER) for the SIC receiver. Additionally, the linear detection algorithm used in each SIC stage fails to eliminate the interference and is susceptible to error propagation. Consequently, designing a high-performance NOMA system receiver is a crucial challenge in NOMA research and particularly i

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Li, Yue, Xuejun Sha, Liang Ye, and Xiaojie Fang. "Guard Band-Based Resource Sharing for Device-to-Device Communications Underlying Cellular Network." Mathematical Problems in Engineering 2016 (2016): 1–8. http://dx.doi.org/10.1155/2016/9547560.

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The performance of device-to-device (D2D) communication in a cellular network depends on the resource sharing between D2D links and cellular users. Existing researches on resource sharing mainly focus on power control between the D2D users and cellular users that operate in the same frequency band. However, the D2D outage probability performance is hampered by the cellular interference to D2D links. Therefore, the D2D users may not achieve satisfactory SINR performance when D2D users and cellular users are geographically located in a small area; as a result, the outage probability performance

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Mercurio, M., and R. Reyes. "THE APPLICABILITY OF LOW-COST MULTI-FREQUENCY MULTI-GNSS RECEIVERS FOR GEODETIC CONTROL SURVEYING." International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLVIII-4/W8-2023 (April 25, 2024): 371–77. http://dx.doi.org/10.5194/isprs-archives-xlviii-4-w8-2023-371-2024.

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Abstract. In geodetic surveys, survey-grade receivers are conventionally used due to their accuracy. However, expensive survey-grade receivers deter users from performing geodetic surveys utilizing the technology. Considerably, multi-system and multi-frequency low-cost GNSS receivers are available today, which can already provide good positioning accuracy output. This paper evaluates the performance of low-cost GNSS receivers in single-point positioning, relative positioning, and network solutions compared to survey-grade GNSS receivers. The study used a survey-grade antenna to test the u-blox

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Weissar, Petr, Jiri Pinker, Miloslava Hrichova, and Jaroslav Firt. "New Method of Program Selection in Digital TV Receivers and its Evaluation by Users." Journal of Advanced Computational Intelligence and Intelligent Informatics 8, no. 5 (2004): 530–34. http://dx.doi.org/10.20965/jaciii.2004.p0530.

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A novel type of a user-friendly "man-to-TV set" interface has been designed for the new generation of digital TV sets with many hundreds of channels. It consists of an optimised remote-control device and a system of menus appearing on the TV screen. Response of potential users has been tested on the groups of students of different age and education, including seniors. Positive results have shown that the new TV control system can be used in practice.

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Aquino, Marcio, Terry Moore, Alan Dodson, Sam Waugh, Jock Souter, and Fabiano S. Rodrigues. "Implications of Ionospheric Scintillation for GNSS Users in Northern Europe." Journal of Navigation 58, no. 2 (2005): 241–56. http://dx.doi.org/10.1017/s0373463305003218.

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Extensive ionospheric scintillation and Total Electron Content (TEC) data were collected by the Institute of Engineering Surveying and Space Geodesy (IESSG) in Northern Europe during years of great impact of the solar maximum on GNSS users (2001–2003). The ionospheric TEC is responsible for range errors due to its time delay effect on transionospheric signals. Electron density irregularities in the ionosphere, occurring frequently during these years, are responsible for (phase and amplitude) fluctuations on GNSS signals, known as ionospheric scintillation. Since June 2001 four GPS Ionospheric

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Rottenberg, François, Xavier Mestre, François Horlin, and Jérôme Louveaux. "Performance Analysis of Linear Receivers for Uplink Massive MIMO FBMC-OQAM Systems." IEEE Transactions on Signal Processing 66, no. 3 (2018): 830–42. https://doi.org/10.1109/TSP.2017.2778682.

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Offset-quadratic-amplitude-modulation-based filterbank multicarrier (FBMC-OQAM) has been shown to be a promising alternative to cyclic prefix-orthogonal frequency division multiplexing. More recently, the use of FBMC-OQAM has been proposed in combination with massive MIMO communications. In this context, it is interesting to study the overall effect of massive MIMO on the FBMC-OQAM intrinsic interference and its interaction with channel frequency selectivity. In this paper, the performance of an FBMC-OQAM uplink massive MIMO system is theoretically characterized in terms of the output mean squ

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Ngoc, Quang Vu, and Hoa Nguyen Thanh. "Processing Small GNSS Networks using GNSS Systems." Journal of Scientific and Engineering Research 8, no. 4 (2021): 7–12. https://doi.org/10.5281/zenodo.10579284.

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<strong>Abstract</strong> For decades, positioning accuracy via satellite technology was mainly based on the Global Positioning System of the USA and a little support from GLONASS. Due to the development of new GNSS systems and the new brand of GNSS receivers, users have much more options in GNSS data processing. This paper is an experimental study on GNSS data processing using different systems. In the research, GNSS data were obtained from a set of Trimble R8s devices including three multi-frequency and multi-channel receivers. GNSS data were calculated with three small networks using Trimbl

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Barhorst, Jennifer Brannon, Alan Wilson, Graeme James McLean, and Joshua Brooks. "Service encounter microblog word of mouth and its impact on firm reputation." Journal of Services Marketing 34, no. 5 (2020): 717–33. http://dx.doi.org/10.1108/jsm-07-2019-0263.

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Purpose It has now become a normal part of the consumption journey for consumers to share their positive and negative service encounters with firms on microblogs such as Twitter. There is, however, a limited amount of research on service encounter microblog word of mouth (SEMWOM) and its impact on firm reputation from a receiver’s perspective. This study aims to understand the comparative effects of positive and negative valence SEMWOM on receivers’ perceptions of firms’ reputations and the factors that are particularly salient to receivers’ perceptions of firm reputation upon exposure to SEMW

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Wang, Desheng, Haizhen Liu, Xiaoqiang Ma, Jun Wang, Yanrong Peng, and Yanyan Wu. "Energy Harvesting for Internet of Things with Heterogeneous Users." Wireless Communications and Mobile Computing 2017 (2017): 1–15. http://dx.doi.org/10.1155/2017/1858532.

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We study the energy harvesting problem in the Internet of Things with heterogeneous users, where there are three types of single-antenna users: ID users that only receive information, EH users that can only receive energy, and ID/EH users that receive information and energy simultaneously from a multiantenna base station via power splitting. We aim to maximize the minimum signal-to-interference-plus-noise ratio (SINR) of the ID users and ID/EH users by jointly designing the power allocation at the transmitter and the power splitting strategy at the ID/EH receivers under the maximum transmit po

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Wang, Liuyang, and Dingjun Yao. "Research on the Forming of Mainstream Ideology Among College Students in the Era of “Short Video”." Studies in Social Science & Humanities 3, no. 7 (2024): 33–36. http://dx.doi.org/10.56397/sssh.2024.07.05.

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Short videos, with their micro, fragmented, and diversified narrative methods, are profoundly changing the behavior and thinking patterns of users, and the mainstream ideological battlefield has been unprecedentedly impacted. The short video platform magnifies the characteristics of information dissemination in the Internet era. All users are both content publishers and content receivers, and the amount and speed of information dissemination are growing geometrically. Secondly, on the basis of producing a large number of short videos of the main theme, technological changes are utilized to ful

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Nguyen, Cam Tu, Lanhui Cai, Mingjie Fang, Yanfeng Liu, and Xueqin Wang. "Collaborative Neighbourhood Logistics in e-Commerce Delivery: A Cluster Analysis of Receivers and Deliverers." Journal of Theoretical and Applied Electronic Commerce Research 20, no. 2 (2025): 147. https://doi.org/10.3390/jtaer20020147.

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The rapid growth of e-commerce and surges in shipment volumes have increased the pressure on transport systems, requiring innovations in collaborative logistics where consumers participate in dual roles as receivers and deliverers. However, existing research often addresses these roles in isolation, overlooking the flexibility with which users switch between them. Moreover, the literature has focused predominantly on monetary value in paid crowdsourced or social value in free social delivery, without fully exploring how users perceive value across both models. Addressing these gaps, this study

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Do, Dinh-Thuan, Minh-Sang Van Nguyen, Thi-Anh Hoang, and Byung Moo Lee. "Exploiting Joint Base Station Equipped Multiple Antenna and Full-Duplex D2D Users in Power Domain Division Based Multiple Access Networks." Sensors 19, no. 11 (2019): 2475. http://dx.doi.org/10.3390/s19112475.

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In this paper, we investigate power domain division-based multiple access (PDMA) to support the base stations (BS) equipped with multiple antennas to serve mobile users. Such a system deploys multiple input single output (MISO)-based wireless transmission and a full-duplex (FD) scheme. Furthermore, such MISO PDMA system consists of BS employing transmit antenna selection to reduce complexity in signal processing at the receivers. We distinguish two kinds of mobile users, device-to-device (D2D) users and traditional users. In such MISO PDMA, there exists a trade-off between outage performance o

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Howe, Bruce M., and James H. Miller. "Acoustic Sensing for Ocean Research." Marine Technology Society Journal 38, no. 2 (2004): 144–54. http://dx.doi.org/10.4031/002533204787522811.

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Ocean observatories have the potential to examine the physical, chemical, biological, and geological parameters and processes of the ocean at time and space scales previously unexplored. Acoustics provides an efficient and cost-effective means by which these parameters and processes can be measured and information can be communicated. Integrated acoustics systems providing navigation and communications and conducting acoustic measurements in support of science applications are, in concept, analogous to the Global Positioning System, but rely on acoustics because the ocean is opaque to electrom

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Tomaštík, Julián, and Tim Everett. "Static Positioning under Tree Canopy Using Low-Cost GNSS Receivers and Adapted RTKLIB Software." Sensors 23, no. 6 (2023): 3136. http://dx.doi.org/10.3390/s23063136.

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The decrease in costs and dimensions of GNSS receivers has enabled their adoption for a very wide range of users. Formerly mediocre positioning performance is benefiting from recent technology advances, namely the adoption of multi-constellation, multi-frequency receivers. In our study, we evaluate signal characteristics and horizontal accuracies achievable with two low-cost receivers—a Google Pixel 5 smartphone and a u-Blox ZED F9P standalone receiver. The considered conditions include open area with nearly optimal signal reception, but also locations with differing amounts of tree canopy. GN

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H.Vincent Poor, Narayan B. Mandayam, Wade Trappe, and Andrey Garnaev. "A multi-link communication connectivity game under hostile interference." ITU Journal on Future and Evolving Technologies 2, no. 1 (2021): 101–12. http://dx.doi.org/10.52953/swhp5412.

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In this paper, we consider a communication connectivity problem involving a primary user (transmitter, for example, a Ground Control Station (GCS)) servicing a group of secondary users (receivers, for example, drones) under hostile interference. We formulate this multi-link communication connectivity problem, where the channels are affected by Rayleigh fading, as a zero-sum power resource allocation game between a transmitter and an adversary (jammer). The transmitter's objective is to maximize the probability of communication connectivity with all the receivers. It is proven that the problem

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El-Rahman, Mahmoud Abd, and Ahmed El-Rabbany. "Performance Evaluation of USTEC Product for Single-Frequency Precise Point Positioning." GEOMATICA 67, no. 4 (2013): 253–57. http://dx.doi.org/10.5623/cig2013-051.

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Geodetic-grade dual-frequency GPS receivers are typically used for precise point positioning (PPP). Unfortunately, these receiver systems are expensive and may not provide a cost-effective solution in many instances. The use of low-cost single-frequency GPS receivers, on the other hand, are limited by the effect of ionospheric delay. A number of mitigation techniques have been proposed to account for the effect of ionospheric delay for single-frequency GPS users. Unfortunately, however, those mitigation techniques are not suitable for PPP. More recently, the U.S. Total Electron Content (USTEC)

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Zhu, Hailing, and Khmaies Ouahada. "Investigating Random Linear Coding from a Pricing Perspective." Entropy 20, no. 8 (2018): 548. http://dx.doi.org/10.3390/e20080548.

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In this paper, we study the implications of using a form of network coding known as Random Linear Coding (RLC) for unicast communications from an economic perspective by investigating a simple scenario, in which several network nodes, the users, download files from the Internet via another network node, the sender, and the receivers as users pay a certain price to the sender for this service. The mean packet delay for a transmission scheme with RLC is analyzed and applied into an optimal pricing model to characterize the optimal admission rate, price and revenue. The simulation results show th

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Tuan, Pham Viet, Dinh Long Hoang, Tu Ha Nguyen, and Trong Duc Hoang. "An Efficient Transmission Power Design for SWIPT Multi-antenna Network Integrated by an Intelligent Reflecting Surface." Hue University Journal of Science: Natural Science 133, no. 1B (2024): 49–61. http://dx.doi.org/10.26459/hueunijns.v133i1b.7144.

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In this work, intelligent reflecting surface (IRS) is integrated to improve the transmission power in the simultaneous wireless information and power transfer (SWIPT) system with hybrid time-switching (TS) users. The considered scenario includes one base station (BS), one IRS, and multiple TS users, where the BS transmits the information and energy signals to the receivers with IRS assistance. The sum transmission power minimization problem is formulated under the quality-of-service constraints of data rate and energy harvesting amount at the TS users and the equal time-switching periods. The

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Jongore, Magret, and Chipo Chirimuuta. "An Exploration of Social Media as Forms of Social Control and Political Othering." International Journal of E-Politics 10, no. 1 (2019): 35–48. http://dx.doi.org/10.4018/ijep.2019010103.

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The twenty-first century problem is of “Othering.” In a world beset by challenges, global, national, and regional conflict wrapped within or organized around group-based difference. The concept of “Othering” is used for social media platforms as the cause of many, if not all of the stresses of globalization, and the “collision of cultures.” This article discusses the advantages and disadvantages of social media in the wake of political othering on the Zimbabwean political landscape. More so, political othering is viewed as exacerbated by the various manipulations of different social media plat

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Manglayev, Talgat, Refik Kizilirmak, and Nor Hamid. "GPU Accelerated PIC and SIC for OFDM-NOMA." Electronics 8, no. 3 (2019): 257. http://dx.doi.org/10.3390/electronics8030257.

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Non-orthogonal multiple access (NOMA) is a candidate multiple access scheme for the fifth-generation (5G) cellular networks. In NOMA systems, all users operate at the same frequency and time, which poses a challenge in the decoding process at the receiver side. In this work, the two most popular receiver structures, successive interference cancellation (SIC) and parallel interference cancellation (PIC) receivers, for NOMA reverse channel are implemented on a graphics processing unit (GPU) and compared. Orthogonal frequency division multiplexing (OFDM) is considered. The high computational comp

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Bui, Anh, and Kazushi Nishimoto. "A Dual-Role Collaborative Learning Support System for Simultaneous Speaking Acquisition in English and Japanese." International Journal of Knowledge and Systems Science 13, no. 1 (2022): 1–19. http://dx.doi.org/10.4018/ijkss.298709.

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Learning a foreign language is becoming more vital in Japan as a result of globalization. It gives foreigners various reasons to study Japanese including working or living in Japan. They should exchange language and skills and generate opportunities for engagement. Assisting them in exchanging linguistic skills and knowledge is critical. This study first proposes a theoretical model of dual-role collaborative learning to improve second language learners' speaking skills. Learners will participate as facilitators in their native language and receivers in their second language. Some supporting f

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Swaszek, Peter F., Richard J. Hartnett, and Kelly C. Seals. "Lower Bounds on DOP." Journal of Navigation 70, no. 5 (2017): 1041–61. http://dx.doi.org/10.1017/s0373463317000248.

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Code phase Global Navigation Satellite System (GNSS) positioning performance is often described by the Geometric or Position Dilution of Precision (GDOP or PDOP), functions of the number of satellites employed in the solution and their geometry. This paper develops lower bounds to both metrics solely as functions of the number of satellites, effectively removing the added complexity caused by their locations in the sky, to allow users to assess how well their receivers are performing with respect to the best possible performance. Such bounds will be useful as receivers sub-select from the plet

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Zhao, Hongmei, Qian Wang, and Kunfeng Shi. "Analysis on Human Blockage Path Loss and Shadow Fading in Millimeter-Wave Band." International Journal of Antennas and Propagation 2017 (2017): 1–6. http://dx.doi.org/10.1155/2017/7540202.

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Millimeter-wave (Mm-w) is the trend of communication development in the future; users who carry mobile communication equipment could be blocked by others in a crowded population environment. Based on Shooting and Bouncing Ray (SBR) method and setting up different orientation receivers (RX), population density, and people fabric property at 28 GHz and 38 GHz, simulating experimental scene similar to station square by Wireless Insite software, we use least square method to do linear-regression analysis for path loss and build path loss model. The result shows that the path loss index has a certa

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Alexandros-Apostolos, A. Boulogeorgos, D. Chatzidiamantis Nestor, and K. Karagiannidis George. "Energy Detection Spectrum Sensing Under RF Imperfections." IEEE Transactions on Communications 64, no. 7 (2018): 2754–66. https://doi.org/10.1109/TCOMM.2016.2561294.

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Direct-conversion radio (DCR) receivers can offer highly integrated low-cost hardware solutions for spectrum sensing in cognitive radio (CR) systems. However, DCR receivers are susceptible to radio frequency (RF) impairments, such as in-phase and quadrature-phase imbalance, low-noise amplifier nonlinearities and phase noise, which limit the spectrum sensing capabilities. In this paper, we investigate the joint effects of RF impairments on energy detection based spectrum sensing for CR systems in multi-channel environments. In particular, we provide novel closed-form expressions for the evaluat

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Danskin, Scott D., Pete Bettinger, Thomas R. Jordan, and Chris Cieszewski. "A Comparison of GPS Performance in a Southern Hardwood Forest: Exploring Low-Cost Solutions for Forestry Applications." Southern Journal of Applied Forestry 33, no. 1 (2009): 9–16. http://dx.doi.org/10.1093/sjaf/33.1.9.

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Abstract The global positioning system (GPS) exhibits much potential for forestry applications, where traditional methods of position determination still dominate. Recent advances in GPS technology may offer improved performance of GPS in forested conditions, and at a considerable cost advantage compared with previous GPS alternatives. We examined the use of several mapping- to recreation-grade GPS receivers across a topographic gradient and the influence of using the Wide Area Augmentation System (WAAS) to their performance under leaf-on and leaf-off conditions. Generally, the mapping-grade r

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