Results 91 to 100 of about 165,363 (243)
Band Limited Signals Observed Over Finite Spatial and Temporal Windows: An Upper Bound to Signal Degrees of Freedom [PDF]
, 2014 The study of degrees of freedom of signals observed within spatially diverse broadband multipath fields is an area of ongoing investigation and has a wide range of applications, including characterising broadband MIMO and cooperative networks. However, a
Abhayapala, Thushara D. +2 more
core
A Genetic Algorithm Based Finger Selection Scheme for UWB MMSE Rake Receivers
, 2005 Due to a large number of multipath components in a typical ultra wideband (UWB) system, selective Rake (SRake) receivers, which combine energy from a subset of multipath components, are commonly employed.
Chiang, Mung +3 more
core +2 more sources
International Journal of Satellite Communications and Networking, EarlyView.ABSTRACT The integration of low Earth orbit (LEO) satellite constellations with commercial aircraft communication systems presents critical challenges in maintaining continuous connectivity during dynamic flight conditions. Current geostationary satellite systems suffer from high round‐trip latency (>$$ > $$ 500 ms) and inadequate coverage at high ...
Raúl Parada +4 more
wiley +1 more source
Summary of wireless indoor positioning technology in industry Internet
物联网学报, 2020 With the rapid development of industry in China,the manufacture needs technological change,and smart factory becomes the key during the changes.Smart factory needs the indoor positioning technology to position the staffs,the materials,the equipment and ...
HANGE C, Weijie LENG
doaj
Anti-Multipath Performance Improvement of an M-ary Position Phase Shift Keying Modulation System
Sensors, 2019 Low-Power Wide-Area Network (LPWAN) is the technology that the Internet-of-Things (IoT) uses in long-distance, wide-coverage scenarios. As one of the ultra-narrowband (UNB) modulation techniques, M-ary position phase shift keying (MPPSK) modulation can ...
Haiyuan Wang, Hongxian Tian
doaj +1 more source
MSFFNet: Multiscale Feature Fusion Network for Small Target Detection in Remote Sensing Images
CAAI Transactions on Intelligence Technology, EarlyView.ABSTRACT With the advancement of satellite remote sensing technology, object detection based on high‐resolution remote sensing imagery has emerged as a prominent research focus in the field of computer vision. Although numerous algorithms have been developed for remote sensing image object detection, they still suffer from challenges such as low ...
Hui Zong +5 more
wiley +1 more source
Statistical Multipath Model Based on Experimental GNSS Data in Static Urban Canyon Environment
Sensors, 2018 A deep understanding of multipath characteristics is essential to design signal simulators and receivers in global navigation satellite system applications.
Yuze Wang, Xin Chen, Peilin Liu
doaj +1 more source
Balanced Multipath Source Routing [PDF]
, 2008 We consider the problem of balancing the traffic load ideally over a wireless multihop network. In previous work, a systematic approach to this task was undertaken, starting with an approximate optimisation method that guarantees a provable congestion performance bound, and then designing a distributed implementation by modifying the DSR protocol. In
Shreyas Prasad +3 more
openaire +1 more source
CAAI Transactions on Intelligence Technology, EarlyView.ABSTRACT Analysing learners' facial expressions during learning and exploring their learning processes and emotional changes are of great significance for assisting teachers' teaching and promoting smart education. In complex learning environments, static facial expression recognition fails to capture the dynamic changes of learners' expressions losing
Wei Liu +6 more
wiley +1 more source
An Energy-Efficient and Robust Multipath Routing Protocol for Cognitive Radio Ad Hoc Networks
Sensors, 2017 Routing in cognitive radio ad hoc networks (CRAHNs) is a daunting task owing to dynamic topology, intermittent connectivity, spectrum heterogeneity, and energy constraints.
Kishor Singh, Sangman Moh
doaj +1 more source