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Journal articles on the topic 'Multipaths'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Chen, Zhigang, Lei Wang, and Mengya Zhang. "Virtual Antenna Array and Fractional Fourier Transform-Based TOA Estimation for Wireless Positioning." Sensors 19, no. 3 (2019): 638. http://dx.doi.org/10.3390/s19030638.

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In this paper, a novel virtual antenna array and fractional Fourier transform (FRFT)-based 2-dimension super-resolution time-of-arrival (TOA) estimation algorithm for OFDM WLAN systems has been proposed. The proposed algorithm employs channel frequency responses (CFRs) at the equi-spaced positions on a line or quasi-line moving trajectory, i.e., the CFRs of a virtual antenna array, to extract multipaths’ TOA information. Meanwhile, a new chirp-like quadratic function is used to approximate the channel multipaths’ phase variation across the space dimension, which is more reasonable than the tra

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2

Shen, Xi Zhong, and Pan Li. "Material Flaw Sizing by Ultrasonic Multipath Detection." Advanced Materials Research 712-715 (June 2013): 1067–70. http://dx.doi.org/10.4028/www.scientific.net/amr.712-715.1067.

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Sizing of material flaw is addressed in the multipath scene, and a method is developed to detect an isolated sized flaw and estimate its height based on imaging theory of different path profiles. A signal model based on the multipath higher order reflections of the flaw is built to detect the sized flaw. Multipaths are predicted and identified on the basis of the direct reflection path, which is relatively easy to be identified using the conventional flaw detection techniques. Direct reflection path and combined path are applied to detect the flaw from the top, and multipath w is to detect its

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Su, Shuqin, and Richard D. Oleschuk. "A capillary and microchip-based nanoelectrospray emitter using a mesoporous membrane." Canadian Journal of Chemistry 86, no. 11 (2008): 1055–62. http://dx.doi.org/10.1139/v08-154.

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A method is described for the fabrication of multipath electrospray emitters using hydrophobic porous polymer membranes. Polysulphone (PSF) and polycarbonate (PC) membranes, which possess pores with well-defined sizes, are glued onto the exit aperture of fused-silica capillaries or microfluidic chips to create multipaths to assist electrospray at moderate nano flow rates (e.g., 50–500 nL/min). A capillary-based multipath emitter fabricated with either PSF or PC membranes was prepared with a fused-silica capillary with 75 µm inner diameter and 360 µm outer diameter. Relative effects on electros

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Muqaibel, Ali H., Moeness G. Amin, and Fauzia Ahmad. "Target Localization with a Single Antenna via Directional Multipath Exploitation." International Journal of Antennas and Propagation 2015 (2015): 1–10. http://dx.doi.org/10.1155/2015/510720.

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Target localization in urban sensing can benefit from angle dependency of the pulse shape at a radar receiver antenna. We propose a localization approach that utilizes the embedded directivity in ultra-wideband (UWB) antennas to estimate target positions. A single radar unit sensing operation of indoor targets surrounded by interior walls is considered, where interior wall multipaths are exploited to provide target cross-range. This exploitation assumes resolvability of the multipath components, which is made possible by the virtue of using UWB radar signals. The proposed approach is most attr

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Blanza, Jojo. "Wireless Propagation Multipaths using Spectral Clustering and Three-Constraint Affinity Matrix Spectral Clustering." Baghdad Science Journal 18, no. 2(Suppl.) (2021): 1001. http://dx.doi.org/10.21123/bsj.2021.18.2(suppl.).1001.

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This study focused on spectral clustering (SC) and three-constraint affinity matrix spectral clustering (3CAM-SC) to determine the number of clusters and the membership of the clusters of the COST 2100 channel model (C2CM) multipath dataset simultaneously. Various multipath clustering approaches solve only the number of clusters without taking into consideration the membership of clusters. The problem of giving only the number of clusters is that there is no assurance that the membership of the multipath clusters is accurate even though the number of clusters is correct. SC and 3CAM-SC aimed t

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Sun, Junchang, Shuai Ma, Hui Zhou, Chun Du, and Shiyin Li. "Measurement and Statistical Analysis of Distinguishable Multipaths in Underground Tunnels." International Journal of Antennas and Propagation 2020 (December 2, 2020): 1–11. http://dx.doi.org/10.1155/2020/2501832.

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Compared with the line-of-sight (LOS) condition, the multipath effect is more serious in the non-line-of-sight (NLOS) condition. Therefore, the LOS and NLOS identification is necessary for the multipath analysis of signal propagation. The commonly used method is the support vector machine (SVM) method with high computational complexity. To tackle this problem, this paper adopts the SVM classifier based on fewer selected features of the normalized power delay profile (PDP). Therein, the PDP can be obtained using the sliding correlation method. The results show that the SVM-based classifier can

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Hunegnaw, Addisu, and Felix Norman Teferle. "Evaluation of the Multipath Environment Using Electromagnetic-Absorbing Materials at Continuous GNSS Stations." Sensors 22, no. 9 (2022): 3384. http://dx.doi.org/10.3390/s22093384.

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To date, no universal modelling technique is available to mitigate the effect of site-specific multipaths in high-precision global navigation satellite system (GNSS) data processing. Multipaths affect both carrier-phase and code/pseudorange measurements, and the errors can propagate and cause position biases. This paper presents the use of an Eccosorb AN-W-79 microwave-absorbing material mounted around a GNSS antenna that reflects less than −17 dB of normal incident energy above a frequency of 600 MHz. To verify the feasibility and effectiveness of the Eccosorb, we installed two close stations

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8

Al Mtawa, Yaser. "Enhancing Network Availability: An Optimization Approach." Computation 11, no. 10 (2023): 202. http://dx.doi.org/10.3390/computation11100202.

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High availability is vital for network operators to ensure reliable services. Network faults can disrupt functionality and require quick recovery. Multipath networking enhances availability through load balancing and optimal link utilization. However, equal-cost multipath (ECMP) routing has limitations in effectively using multipaths, decreasing network availability. This paper proposes a three-phase disjoint-path framework that improves availability by directing traffic flows through separate paths. The framework provides effective load balancing and meets various service requirements. It inc

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9

Scherrer, Stephen R., Brendan P. Rideout, Giacomo Giorli, Eva-Marie Nosal, and Kevin C. Weng. "Depth- and range-dependent variation in the performance of aquatic telemetry systems: understanding and predicting the susceptibility of acoustic tag–receiver pairs to close proximity detection interference." PeerJ 6 (January 12, 2018): e4249. http://dx.doi.org/10.7717/peerj.4249.

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Background Passive acoustic telemetry using coded transmitter tags and stationary receivers is a popular method for tracking movements of aquatic animals. Understanding the performance of these systems is important in array design and in analysis. Close proximity detection interference (CPDI) is a condition where receivers fail to reliably detect tag transmissions. CPDI generally occurs when the tag and receiver are near one another in acoustically reverberant settings. Here we confirm transmission multipaths reflected off the environment arriving at a receiver with sufficient delay relative t

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10

Materum, Lawrence, and Antipas T. Teologo Jr. "An Improved K-Power Means Technique Using Minkowski Distance Metric and Dimension Weights for Clustering Wireless Multipaths in Indoor Channel Scenarios." Journal of Information and Communication Technology 20, No.4 (2021): 541–63. http://dx.doi.org/10.32890/jict2021.20.4.4.

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Wireless multipath clustering is an important area in channel modeling, and an accurate channel model can lead to a reliable wireless environment. Finding the best technique in clustering wireless multipath is still challenging due to the radio channels’ time-variant characteristics. Several clustering techniques have been developed that offer an improved performance but only consider one or two parameters of the multipath components. This study improved the K-PowerMeans technique by incorporating weights or loads based on the principal component analysis and utilizing the Minkowski distance m

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11

Yuan, Zhenhua, Chen Chen, and Ye Jin. "Erasure channel modelling–based secure bit allocation schemes for multipath routing in wireless sensor networks." International Journal of Distributed Sensor Networks 12, no. 12 (2016): 155014771668360. http://dx.doi.org/10.1177/1550147716683605.

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In this article, we study secure multipath routing with energy efficiency for a wireless sensor network in the presence of eavesdroppers. We consider two objectives: (1) the multipath routing scheme for maximising the energy efficiency with security constraints and (2) the multipath routing scheme for maximising the secrecy capacity. The binary erasure channel model is adopted to describe the wireless channel states among neighbouring nodes. Based on the binary erasure channel model, the problem of multipath routing degrades to a problem of bit allocation for each path. We formulate the proble

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Blanza, Jojo, Emmanuel Trinidad, and Lawrence Materum. "Scedasticity descriptor of terrestrial wireless communications channels for multipath clustering datasets." International Journal of Electrical and Computer Engineering (IJECE) 13, no. 6 (2023): 6547. http://dx.doi.org/10.11591/ijece.v13i6.pp6547-6557.

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Fifth-generation (5G) wireless systems increased the bandwidth, improved the speed, and shortened the latency of communications systems. Various channel models are developed to study 5G. These channel models reproduce the stochastic properties of multiple-input multiple-output (MIMO) antennas by generating wireless multipath components (MPCs). The MPCs that have similar properties in delay, angles of departure, and angles of arrival form clusters. The multipaths and multipath clusters serve as datasets to understand the properties of 5G. These datasets generated by the Cooperation in Science a

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Jojo, Blanza, Trinidad Emmanuel, and Materum Lawrence. "Scedasticity descriptor of terrestrial wireless communications channels for multipath clustering datasets." International Journal of Electrical and Computer Engineering (IJECE) 13, no. 6 (2023): 6547–57. https://doi.org/10.11591/ijece.v13i6.pp6547-6557.

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Fifth-generation (5G) wireless systems increased the bandwidth, improved the speed, and shortened the latency of communications systems. Various channel models are developed to study 5G. These channel models reproduce the stochastic properties of multiple-input multiple-output (MIMO) antennas by generating wireless multipath components (MPCs). The MPCs withsimilar properties in delay, angles of departure, and angles of arrival form clusters. The multipaths and multipath clusters serve as datasets to understand the properties of 5G. These datasets generated by the Cooperation in Science and Tec

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14

She, Feng, Hsiao Hwa Chen, and Hongyang Li. "Joint Angular and Time Diversity of Multi-Antenna CDMA Systems in Wireless Fading Channels." International Journal of Wireless Networks and Broadband Technologies 1, no. 1 (2011): 1–14. http://dx.doi.org/10.4018/ijwnbt.2011010101.

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In this paper, a multi-antenna based receiver structure for direct sequence code division multiple access (DS/CDMA) system is proposed. The proposed scheme exploits the excellent time resolution of a CDMA RAKE receiver and uses an antenna array beamforming structure to resolve multipath returns in both angular and time domains. A much higher diversity gain than that based only on the time domain diversity can be achieved. This work suggests a new space-time diversity paradigm, namely angular-time diversity, which differs from traditional Alamouti-type space-time coded schemes. The impairments

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15

Visentin, Tristan, Jürgen Hasch, and Thomas Zwick. "Analysis of multipath and DOA detection using a fully polarimetric automotive radar." International Journal of Microwave and Wireless Technologies 10, no. 5-6 (2018): 570–77. http://dx.doi.org/10.1017/s1759078718000284.

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AbstractMultipath propagation occurs in many situations of radar measurements in complex environments. The unwanted effects range from interference over the radar channels, which causes amplitude fading and a corrupted direction of arrival (DOA) estimation, to the detection of ghost targets in an angle of arrival of the multipath direction. Due to the different number of reflections, polarimetric radars are capable to separate certain multipaths from direct paths if the target is known in advance. Furthermore, it is possible to separate objects with different polarimetric features in DOA that

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Ng, Benjamin K., and Chan-Tong Lam. "Single-Carrier Rotation-Interleaved Space-Time Code for Frequency-Selective Fading Channels." Applied Sciences 12, no. 24 (2022): 12803. http://dx.doi.org/10.3390/app122412803.

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A novel single-carrier-based space-time code construction scheme to exploit the advantages of a frequency-selective fading channel is investigated in this paper. The proposed construction scheme is based on multiplexing independent streams of phase-rotated space-time codes in a time-interleaved fashion. The advantage of such design is that it guarantees full space-time-multipath diversity by using traditional space-time codes or MIMO signaling schemes originally designed for flat fading channels as the constituent codes. Another advantage is that this approach incurs no loss in bandwidth effic

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17

Yang, Yiping, Chuan Chen, Yong Jia, Guolong Cui, and Shisheng Guo. "Non-Line-of-Sight Target Detection Based on Dual-View Observation with Single-Channel UWB Radar." Remote Sensing 14, no. 18 (2022): 4532. http://dx.doi.org/10.3390/rs14184532.

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Non-line-of-sight (NLOS) target detection utilizing multipath plays an important role in anti-terrorism, urban warfare, indoor rescue and intelligent driving. In this paper, an imaging method based on single-channel ultra-wideband (UWB) radar and dual-view observation is proposed for detecting NLOS targets. First, the cause of producing ghosts from a single view in a previous study is analyzed in detail. On this basis, with focusing on dual-view observation, the ghost problem is handled at two levels. From the level of the radar echo, path partition is conducted with the utilization of dual-vi

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18

So, H. C., and P. C. Ching. "Target localisation in presence of multipaths." Electronics Letters 29, no. 3 (1993): 293. http://dx.doi.org/10.1049/el:19930200.

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19

Lee, Yongjun, and Byungwoon Park. "Nonlinear Regression-Based GNSS Multipath Modelling in Deep Urban Area." Mathematics 10, no. 3 (2022): 412. http://dx.doi.org/10.3390/math10030412.

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As the necessity of location information closely related to everyday life has increased, the use of global navigation satellite systems (GNSS) has gradually increased in populated urban areas. Contrary to the high necessity and expectation of GNSS in urban areas, GNSS performance is easily degraded by multipath errors due to high-rise buildings and is very difficult to guarantee. Errors in the signals reflected by the buildings, i.e., multipath and non-line-of-sight (NLOS) errors, are the major cause of the poor accuracy in urban areas. Unlike other GNSS major error sources, the reflected sign

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20

Zhang, Yimin D., Xizhong Shen, Ramazan Demirli, and Moeness G. Amin. "Ultrasonic Flaw Imaging via Multipath Exploitation." Advances in Acoustics and Vibration 2012 (August 1, 2012): 1–12. http://dx.doi.org/10.1155/2012/874081.

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We consider ultrasonic imaging for the visualization of flaws in a material. Ultrasonic imaging is a powerful nondestructive testing (NDT) tool which assesses material conditions via the detection, localization, and classification of flaws inside a structure. We utilize reflections of ultrasonic signals which occur when encountering different media and interior boundaries. These reflections can be cast as direct paths to the target corresponding to the virtual sensors appearing on the top and bottom side of the target. Some of these virtual sensors constitute a virtual aperture, whereas in oth

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Ait-Ighil, Mehdi, Fernando Perez-Fontan, Joel Lemorton, Frederic Lacoste, Christophe Bourga, and Michel Bousquet. "A Three-Component Model Based on Macropropagation Phenomena Approach for Complex Building Scattering." International Journal of Antennas and Propagation 2015 (2015): 1–13. http://dx.doi.org/10.1155/2015/258060.

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Multipaths represent a common predominant and uncontrolled component on channel impairments for all terrestrial and Land Mobile Satellite systems. Without restrictions w.r.t mobile terrestrial applications, the addressed multipath problematic in this paper is focused on Land Mobile Satellite applications where delayed signal replicas are highly impacting performances on communication systems while they induce strong positioning errors for navigation systems. The actual trend in propagation channel modelling is to improve the multipath characterisation and representation by using semideterminis

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22

A. Rida, Jafaar Fahad. "Improvement for performance radio frequency in wireless communication based on impulse signal." Indonesian Journal of Electrical Engineering and Computer Science 18, no. 2 (2020): 903. http://dx.doi.org/10.11591/ijeecs.v18.i2.pp903-916.

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<p><span>This research presents the improved performance of mobile wireless communication channel is based on non-line of sight because the mobile propagation channel is very hard to work with direct path between the transmitter and mobile receiver because of city-based area has objects such as rise building, trees, surround structures, and other objects. The mobile wireless spread radio channels have radio propagation mechanisms as a reflection, diffraction, and scattering effect on radio signal as lessening, </span>and distortion or spread time. The most important thing to

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Jafaar, Fahad A. Rida. "Improvement for performance radio frequency in wireless communication based on impulse signal." Indonesian Journal of Electrical Engineering and Computer Science (IJEECS) 18, no. 2 (2020): 903–16. https://doi.org/10.11591/ijeecs.v18.i2.pp903-916.

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This research presents the improved performance of mobile wireless communication channel is based on non-line of sight because the mobile propagation channel is very hard to work with direct path between the transmitter and mobile receiver because of city-based area has objects such as rise building, trees, surround structures, and other objects. The mobile wireless spread radio channels have radio propagation mechanisms as a reflection, diffraction, and scattering effect on radio signal as lessening, and distortion or spread time. The most important thing to make real is that the wireless cha

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Zhang, Jie, Lin Zhao, Fuxin Yang, Liang Li, Xiaosong Liu, and Ruizhe Zhang. "Integrity monitoring for undifferenced and uncombined PPP under local environmental conditions." Measurement Science and Technology 33, no. 6 (2022): 065010. http://dx.doi.org/10.1088/1361-6501/ac4b12.

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Abstract Integrity monitoring of precise point positioning (PPP) can provide tightly guaranteed absolute position error bounds for safety-critical applications. However, a complex local environment makes PPP integrity monitoring much more challenging, such as urban canyons. Significant prone multipaths and low observation redundancy are the main difficulties in the accuracy and reliability of PPP. Therefore, we proposed a solution separation-based integrity monitoring algorithm, which is based on a single and dual frequency undifferenced and uncombined PPP model considering compensation for th

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Zhu, Yinan, Chunhui Duan, and Xuan Ding. "RoSense." ACM SIGMETRICS Performance Evaluation Review 50, no. 4 (2023): 53–55. http://dx.doi.org/10.1145/3595244.3595263.

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RFID sensing leveraging backscatter signal features (e.g., phase shift) from tags has gained increasing popularity in numerous applications, but also suffers from negative impacts of environmental multipaths. Past works to address it rely on extra customized devices, labor-intensive offine training or frequency channel hopping, all of which are nonubiquitous or ineffective for real-life adoption. This paper presents RoSense, a universal method to alleviate multipath reflections' impacts by spinning the reader antenna, thus enabling more robust RFID sensing. Besides, RoSense requires no RF devi

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Blanza, J., X. E. Cabasal, J. B. Cipriano, G. A. Guerrero, R. Y. Pescador, and E. V. Rivera. "Indoor Wireless Multipaths Outlier Detection and Clustering." Journal of Physics: Conference Series 2356, no. 1 (2022): 012037. http://dx.doi.org/10.1088/1742-6596/2356/1/012037.

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Wireless communication systems have grown and developed significantly in recent years to fulfill the growing demand for high data rates across a wireless medium. Channel models have been used to develop various sturdy wireless systems for indoor and outdoor applications, and these are simulated in the form of datasets. The presence of outliers in clusters has been a concern in datasets, as it affects the standard deviation and mean of the dataset which reduces the data accuracy. In this study, the outliers in the Cooperation in Science and Technology (COST) 2100 MIMO channel model dataset were

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Spiesberger, John L., Frederick D. Tappert, and Michael A. Wolfson. "Predictability of acoustic multipaths over basin scales." Journal of the Acoustical Society of America 101, no. 5 (1997): 3116. http://dx.doi.org/10.1121/1.418960.

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Baggeroer, Arthur B., and John A. Colosi. "Correlation among multipaths for long rang propagation." Journal of the Acoustical Society of America 140, no. 4 (2016): 3024. http://dx.doi.org/10.1121/1.4969379.

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Jha, Roshni, and Dr Shivnath Ghosh. "Energy Efficient Particle Swarm Optimization Based Multipath Routing in WSN." SMART MOVES JOURNAL IJOSCIENCE 4, no. 10 (2018): 5. http://dx.doi.org/10.24113/ijoscience.v4i10.164.

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Wireless Networks includes a larger advantage in today’s communication application like environmental, traffic, military, and health observation. To realize these applications it's necessary to possess a reliable routing protocol. discusses about the working of proposed energy efficient bandwidth aware shortest path routing protocol for multipath routing in wireless sensor network. The proposed algorithm is based for choosing energy efficient shortest path. In routing algorithm, route that have shortest path among multipaths selected by particle swarm optimization algorithm. Among these shorte

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Lee, Seunghwa, and Joon Yoo. "Reinforcement Learning Based Multipath QUIC Scheduler for Multimedia Streaming." Sensors 22, no. 17 (2022): 6333. http://dx.doi.org/10.3390/s22176333.

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With the recent advances in computing devices such as smartphones and laptops, most devices are equipped with multiple network interfaces such as cellular, Wi-Fi, and Ethernet. Multipath TCP (MPTCP) has been the de facto standard for utilizing multipaths, and Multipath QUIC (MPQUIC), which is an extension of the Quick UDP Internet Connections (QUIC) protocol, has become a promising replacement due to its various advantages. The multipath scheduler, which determines the path to which each packet should be transmitted, is a key function that affects the multipath transport performance. For examp

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Jun, Joonhyeon, Jongsung Kang, Jaehyun Park, Wooyong Yang, and Minkyu Park. "Accurate Low-Angle Tracking Using Successive Interference Cancelation and Single-Tone Frequency Estimation." Journal of Electromagnetic Engineering and Science 24, no. 6 (2024): 601–10. https://doi.org/10.26866/jees.2024.6.r.266.

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This paper tackles the low-angle target tracking problem caused by surface-reflected multipaths through successive interference cancelation (SIC) and single-tone frequency (STF) estimation. The coherent specular multipath component in the received radar signal is canceled through SIC, after which the angle-of-arrival (AoA) of the direct path is accurately estimated by applying STF estimation to the interference-suppressed signal. To further improve estimation accuracy, we develop an iterative process where SIC and STF are sequentially repeated. Drawing on the AoA of the direct path estimated u

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Su, Zhaohua, Jie Zhuo, and Chao Sun. "Imaging Seafloor Features Using Multipath Arrival Structures." Remote Sensing 16, no. 14 (2024): 2586. http://dx.doi.org/10.3390/rs16142586.

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In this paper, we propose an imaging method for seafloor features based on multipath arrival structures. The bistatic sonar system employed consists of a vertical transmitting array and a horizontal towed array. The conventional back projection (BP) method, which considers the direct path from the source to the seafloor scatterer and then to the receiver, is used in this system. However, discrepancies between the calculated delay values and the actual propagation delay result in projection deviations and offsets in the seafloor features within sound intensity images. To address this issue, we

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Hilmo, Rose, and William S. D. Wilcock. "Estimating distances to baleen whales using multipath arrivals recorded by individual seafloor seismometers at full ocean depth." Journal of the Acoustical Society of America 155, no. 2 (2024): 930–51. http://dx.doi.org/10.1121/10.0024615.

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Ocean bottom seismometer networks can record opportunistic data sets of 20-Hz fin whale calls. Because networks are often too sparse for multi-station tracking, single-station methods are needed to estimate call density. We investigated a method to range to singing fin whales at full ocean depths using the spacing of water column multiples. Calls were detected by cross-correlating a spectrogram with a template call. To enhance multipath signals, we considered 20-min windows and either summed the spectrograms of all calls aligned on the strongest detection before measuring the multipath spacing

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Chung, Gwo Chin, Pravin Kumar A/L Sivakumar, Jun Jiat Tiang, Wai Leong Pang, and Chu Liang Lee. "Performance Study of Multipath Effect in 5G Millimeter-Wave Channel." International Journal on Advanced Science, Engineering and Information Technology 13, no. 6 (2023): 2128–35. http://dx.doi.org/10.18517/ijaseit.v13i6.19033.

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5G has been essentially a buzzword for several years, but according to the experts, from 2022 onward, there will be an inflection point between network maturity and the availability of 5G. To make 5G a reality, we must minimize all propagation losses. One of the possible factors that reduces the performance of 5G transmission is the multipath effect. In this paper, we investigate the severity of the multipath effect in the 5G millimeter-wave (mmWave) channel and mitigate the multipath effect using adaptive equalization based on the least mean square (LMS) algorithm to improve the performance o

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Chung, Gwo Chin, Pravin Kumar A/L Sivakumar, Jun Jiat Tiang, Wai Leong Pang, and Chu Liang Lee. "Performance Study of Multipath Effect in 5G Millimeter-Wave Channel." International Journal on Advanced Science, Engineering and Information Technology 13, no. 6 (2023): 2128–35. http://dx.doi.org/10.18517/ijaseit.13.6.19033.

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5G has been essentially a buzzword for several years, but according to the experts, from 2022 onward, there will be an inflection point between network maturity and the availability of 5G. To make 5G a reality, we must minimize all propagation losses. One of the possible factors that reduces the performance of 5G transmission is the multipath effect. In this paper, we investigate the severity of the multipath effect in the 5G millimeter-wave (mmWave) channel and mitigate the multipath effect using adaptive equalization based on the least mean square (LMS) algorithm to improve the performance o

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Chen, Chen, Dan Fei, Peng Zheng, and Bo Ai. "A Passive Channel Measurement and Analysis Based on a 5G Commercial Network in V2I Communications." Electronics 12, no. 17 (2023): 3715. http://dx.doi.org/10.3390/electronics12173715.

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To acquire accurate channel characteristics for 5G New Radio (NR) vehicle-to-infrastructure (V2I) communications, in this paper, we propose a 5G passive channel measurement platform based on software defined radio devices and 5G user equipment. Different from active measurement platforms, the proposed measurement platform only requires a receiver and the channel state information reference signal (CSI-RS) periodically transmitted by the 5G commercial base stations is used as the measurement waveform. The channel impulse response can be computed based on the CSI-RS signal extracted from the rec

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Aneja, Y. P., R. Chandrasekaran, S. N. Kabadi, and K. P. K. Nair. "Flows over edge-disjoint mixed multipaths and applications." Discrete Applied Mathematics 155, no. 15 (2007): 1979–2000. http://dx.doi.org/10.1016/j.dam.2007.05.001.

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Hirata, Kakeru, Takefumi Hiraguri, Tomotaka Kimura, et al. "Study on Drone Handover Methods Suitable for Multipath Interference Due to Obstacles." Drones 8, no. 2 (2024): 32. http://dx.doi.org/10.3390/drones8020032.

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Networks constructed in the sky are known as non-terrestrial networks (NTNs). As an example of an NTN, relay transmission using drones as radio stations enables flexible network construction in the air by performing handovers with ground stations. However, the presence of structures or obstacles in the flight path causes multipath interference; consequently, the propagation environment fluctuates significantly based on the flight. In such a communication environment, it is difficult for a drone to select an optimal ground station for a handover. Moreover, unlike a terrestrial network, the prop

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Mazhar, Haroon, and Syed Ali Hassan. "Analysis of target multipaths in WiFi‐based passive radars." IET Radar, Sonar & Navigation 10, no. 1 (2016): 140–45. http://dx.doi.org/10.1049/iet-rsn.2015.0075.

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Bentz, Cédric, Marie-Christine Costa, Christophe Picouleau, and Maria Zrikem. "The shortest multipaths problem in a capacitated dense channel." European Journal of Operational Research 178, no. 3 (2007): 926–31. http://dx.doi.org/10.1016/j.ejor.2006.03.007.

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41

Barton, Alan, and Daniela Di Iorio. "A maximum likelihood estimation algorithm for tracking two multipaths." Journal of the Acoustical Society of America 107, no. 5 (2000): 2893. http://dx.doi.org/10.1121/1.428758.

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Casey H. Atienza, Sean David R. Aggabao, Thrisha Mae T. Banguis, et al. "MIMO Multipath Component Clustering using k-Deep Autoencoder." Journal of Advanced Research in Applied Mechanics 119, no. 1 (2024): 27–36. http://dx.doi.org/10.37934/aram.119.1.2736.

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In modern wireless communication systems, accurate characterization of wireless propagation channels remains a significant challenge. In multiple-input multiple-output (MIMO) wireless systems, a double-directional channel can be achieved by utilizing multipath components' spatial and temporal properties (MPCs). Grouping the MPC can simplify the parameters as a trade-off between complexity and accuracy. This paper implements k-Deep Auto Encoder (k-DAE), AE+k-means, and K Power Means (KPM) clustering approaches and compares their performance in clustering wireless propagation multipaths in indoo

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Reynolds, S. A., B. A. Bell, and T. E. Ewart. "Using a multi‐dimensional matched filter algorithm to separate multipaths." Journal of the Acoustical Society of America 79, S1 (1986): S56. http://dx.doi.org/10.1121/1.2023287.

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Heaney, Kevin D., and Henry Cox. "Bottom grazing acoustic arrivals: Explanation of anomalous arriving deep multipaths." Journal of the Acoustical Society of America 109, no. 5 (2001): 2386. http://dx.doi.org/10.1121/1.4744413.

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Bell, B., and T. Ewart. "Separating multipaths by global optimization of a multidimensional matched filter." IEEE Transactions on Acoustics, Speech, and Signal Processing 34, no. 5 (1986): 1029–37. http://dx.doi.org/10.1109/tassp.1986.1164940.

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46

Nakano, Iwao. "Graphical method for identification of multipaths in ocean acoustic tomography." Journal of the Acoustical Society of America 88, S1 (1990): S142. http://dx.doi.org/10.1121/1.2028635.

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Deng, Zhongliang, Xinyu Zheng, Hanhua Wang, Xiao Fu, Lu Yin, and Wen Liu. "A Novel Time Delay Estimation Algorithm for 5G Vehicle Positioning in Urban Canyon Environments." Sensors 20, no. 18 (2020): 5190. http://dx.doi.org/10.3390/s20185190.

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Vehicle positioning with 5G can effectively compensate for the lack of vehicle positioning based on GNSS (Global Navigation Satellite System) in urban canyons. However, there is also a large ranging error in the non-line of sight (NLOS) propagation of 5G. Aiming to solve this problem, we consider a new time delay estimation algorithm called non-line of sight cancellation multiple signal classification (NC-MUSIC). This algorithm uses cross-correlation to identify and cancel the NLOS signal. Then, an unsupervised multipath estimation method is used to estimate the number of multipaths and extrac

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Wu, Wei-Chen, and Horng-Twu Liaw. "A Study on High Secure and Efficient MANET Routing Scheme." Journal of Sensors 2015 (2015): 1–10. http://dx.doi.org/10.1155/2015/365863.

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In mobile ad hoc networks (MANETs), the more applications we use, the more security is required. In this paper, we propose a high secure and efficient routing scheme that not only satisfies the properties of anonymity, security, authentication, nonrepudiation, and unforgeability that the previous paper achieved for ad hoc networks, but also satisfies other necessary properties such as confidentiality, traceability, and flexibility for multipaths in order to make the ad hoc environment more secure and practicable.

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Blanza, Jojo F. "Joint Identification of the Clustering and Cardinality of Wireless Propagation Multipaths." International Journal of Emerging Trends in Engineering Research 7, no. 12 (2019): 763–67. http://dx.doi.org/10.30534/ijeter/2019/057122019.

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Cuda, Davide, Raluca-Maria Indre, Esther Le Rouzic, and James Roberts. "Building a Low-Energy Transparent Optical Wide Area Network With “Multipaths”." Journal of Optical Communications and Networking 5, no. 1 (2012): 56. http://dx.doi.org/10.1364/jocn.5.000056.

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