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201
An Optimal Electric Dipole Antenna Model and Its Field Propagation
Published 2016-01-01“…Optimum frequency for field transmission in different depth is carried out and verified by the experimental results in comparison with previously reported simulation over a digital wireless Through-The-Earth communication system. The experimental results demonstrate that the dipole antenna grounding impedance and the output power can be efficiently reduced by using the optimal electric dipole antenna model and operating at the optimum frequency in a vertical transmission depth up to 300 m beneath the surface of the earth.…”
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202
A Review of Antenna Array Technologies for Point-to-Point and Point-to-Multipoint Wireless Communications at Millimeter-Wave Frequencies
Published 2021-01-01“…With the introduction of 5G communication systems operating in the mm-wave frequency range, new opportunities in terms of multimedia services and applications will become available. …”
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203
Received Power Attenuation Analysis Based on Wavelet for Reflection-Style Optical Antenna Deformations in Free-Space Laser Communications
Published 2011-01-01“…It is hoped that the study can be used in the design of free space laser communication systems.…”
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204
QoS-aware enhanced proportional faire scheduling algorithm for real-time services in LTE networks
Published 2023-06-01“…Adding multi-media services to wireless communication systems provide new challenges of resource allocation. …”
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205
Enhancing Existing Communication Services with Context Awareness
Published 2012-01-01“…In this work, we introduce a context aware communication system that takes into account user’s preferences, workload, and situation to customize telephony services. …”
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206
Sign Language Recognition System for Deaf Patients: Protocol for a Systematic Review
Published 2025-01-01“…Therefore, the development of automatic communication systems to assist the interaction between this population and health care workers is paramount. …”
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207
Cross-Layer Framework for Multiuser Real Time H.264/AVC Video Encoding and Transmission over Block Fading MIMO Channels Using Outage Probability
Published 2014-01-01“…These models are used during the resource allocation of the available slots in a TDMA MIMO communication system with capacity achieving channel codes. …”
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208
Improved lattice‐based mix‐nets for electronic voting
Published 2023-01-01“…Abstract Mix‐networks were first proposed by Chaum in the late 1970s–early 1980s as a general tool for building anonymous communication systems. Classical mix‐net implementations rely on standard public key primitives (e.g., ElGamal encryption) that will become vulnerable when a sufficiently powerful quantum computer will be built. …”
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209
Cross-population variation in usage of a call combination: evidence of signal usage flexibility in wild bonobos
Published 2024-08-01“…To shed light on the phylogeny of the phenomenon, comparative data examining the relationship between signal form and function in the communication systems of non-humans is central. Here we report the results of a study on the production and usage the whistle-high hoot call combination (W + HH) from two distant populations of wild bonobos (Pan paniscus): Lui Kotale, DRC, and Kokolopori, DRC. …”
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210
Hybrid presence: Integrating interprofessional interactions with digital consultations
Published 2021-09-01“…Moreover, via a video-recorded case study, this article shows how two practitioners organise social actions by exploiting features of a digital communication system in a situation where they manage a practical problem. …”
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211
Channel Estimation Optimization Model in Internet of Things Based on MIMO/OFDM with Deep Extended Kalman Filter
Published 2022-07-01“…Channel estimation plays a vital role in the performance of wireless communication systems. However, apart from the usual OFDM modes, there are also orthogonal conditions for modulationbased multi-channel systems, which make channel estimation on networks such as the Internet of Things (IoT) more complex. …”
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212
New Flexible Medical Compact Antenna: Design and Analysis
Published 2012-01-01“…Some results on embedded antennas for medical wireless communication systems are presented. Medical telemetry can advantageously assist medical diagnostics. …”
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213
Analysis and Design of an Optimal Noise Estimation and Cancellation Filter in Wireline Communication
Published 2024-01-01“…This paper presents a comprehensive study of noise prediction and cancellation techniques in high-speed wireline communication systems. Feedforward and feedback architectures are compared, and it is found that while feedforward architecture can reduce total noise power, it fails to reduce symbol error rate (SER) due to unreliable noise estimation. …”
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214
High Gain Superstrate Loaded Membrane Antenna Based on Substrate Integrated Waveguide Technology
Published 2015-01-01“…The design and the results of a single slot coupled substrate integrated waveguide (SIW) fed membrane antenna loaded with a superstrate layer are presented for 94 GHz communication system. The membrane antenna is designed using ANSYS HFSS and consists of 6 layers. …”
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215
Optimization and Modeling of Optical Emission Spatial Coverage from Underwater Multi-Faceted Optical Base Stations
Published 2024-12-01“…Compared with point-to-point wireless optical communication systems, multi-faceted Optical Base Stations (OBSs) offer the advantages of supporting multi-user access and achieving omnidirectional dynamic communication. …”
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216
Main-Branch Structure Iterative Detection Using Approximate Message Passing for Uplink Large-Scale Multiuser MIMO Systems
Published 2016-01-01“…In this paper, we introduce an iterative detection algorithm for uplink large-scale multiuser MIMO-OFDM communication systems. We design a Main-Branch structure iterative turbo detector using the Approximate Message Passing algorithm simplified by linear approximation (AMP-LA) and using the Mean Square Error (MSE) criterion to calculate the correlation coefficients between main detector and branch detector for the given iteration. …”
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217
Performance improvement of non-orthogonal multiple access scheme using code division multiplexing
Published 2017-11-01“…Currently, the standardization of fifth-generation mobile communication system (5G), which realizes 10 Gbps transmission, is in progress. …”
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218
A New Robust Method for Mobile Robot Multifloor Navigation in Distributed Life Science Laboratories
Published 2016-01-01“…This method proposes a solution for many technical issues including (a) mapping and localization with ceiling landmarks and a StarGazer module for achieving an accurate and low cost multifloor navigation system, (b) a new method for path planning to navigate across multiple floor environments called backbone method and embedded transportation management system, (c) elevator environment handler with the necessary procedures to interact with the elevator presenting a new approach for elevator entry button and internal buttons detection, and (d) communication system to get an expandable network; this method utilizes a TCP/IP network for the communication. …”
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219
A Novel SLM Scheme for PAPR Reduction in OFDM Systems
Published 2011-01-01“…Orthogonal frequency-division multiplexing (OFDM) is an attractive transmission technique for high-bit-rate communication systems. One major drawback of OFDM is the high peak-to-average power ratio (PAPR) of the transmitter's output signal. …”
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220
Analysis and Design of a Novel Multiband Antenna for Mobile Terminals
Published 2015-01-01“…It is very suitable for multifunctional terminal applications in wireless communication systems.…”
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