Results 71 to 80 of about 3,470 (184)
Measurement-Based LoS/NLoS Channel Modeling for Hot-Spot Urban Scenarios in UMTS Networks
International Journal of Antennas and Propagation, 2014 A measurement campaign is introduced for modeling radio channels with either line-of-sight (LoS) or non-line-of-sight (NLoS) connection between user equipment (UE) and NodeB (NB) in an operating universal mobile telecommunications system.
Jiajing Chen +7 more
doaj +1 more source
Comparison of SUN and Wi-Fi P2P WSN in M2M Environments
International Journal of Distributed Sensor Networks, 2015 In wireless sensor network, two scenarios are combined which involve either short-range or long-range communications. IEEE 802.15.4g and IEEE 802.11 are considered in machine to machine environments, because they can utilize the identical frequency band.
Eui-Suk Oh +3 more
doaj +1 more source
Dianxin kexueWith the development of smart grids, power line communication (PLC) faces challenges such as surging service data and increasing transmission rates, making high-precision channel estimation crucial for enhancing communication performance.
Liu Yan, Zhu Enguo, Zheng Guoquan
doaj
Time-Varying Channel Estimation Based on Distributed Compressed Sensing for OFDM Systems
SensorsFor orthogonal frequency division multiplexing (OFDM) systems in high-mobility scenarios, the estimation of time-varying multipath channels not only has a large error, which affects system performance, but also requires plenty of pilots, resulting in low
Yong Ding +4 more
doaj +1 more source
Noncoherent CSK communication system and its performance analysis
Tongxin xuebao, 2007 A noncoherent CSK communication system with adjustable weights was proposed.Both theoretical analysis and simulation for its BER performance under the environment of multipath channels were studied.The results show that the BER performance of the system ...
CHEN Hong-bin, FENG Jiu-chao
doaj +2 more sources
Scientific ReportsIn this paper, we investigate the decoding performance and corresponding decoding strategies for polar-coded orthogonal frequency division multiplexing (OFDM) system operating under multipath fading channels.
Mingbao Wu +5 more
doaj +1 more source
A Robust Time-Frequency Synchronization Method for Underwater Acoustic OFDM Communication Systems
IEEE AccessThe strong multipath and long delay extensions can lead to large errors in the timing offset estimation and carrier frequency offset estimation of the Orthogonal Frequency Division Multiplexing (OFDM) underwater communication system, resulting in ...
Chi Yang +5 more
doaj +1 more source
Accuracy Bounds for Array-Based Positioning in Dense Multipath Channels. [PDF]
Sensors (Basel), 2018 Wilding T +3 more
europepmc +1 more source
Технічна інженеріяThe article discusses current issues related to ensuring the reliability of data transmission channels in modern information networks. The main destabilising factors affecting the quality of wireless channels are identified, in particular multipath ...
O.I. Lastivka, O.P. Nechyporuk
doaj +1 more source
Channel estimation of UFMC system in multipath channel
Dianxin kexue, 2018 As a candidate waveform of 5G,universal filter multi-carrier (UFMC) technology could inhibit out-of-band radiation,achieve loose synchronization and well support the short bursts of things in the transmission.However,in the UFMC transmission without cyclic prefix (CP),inter-symbol interference (ISI) and subcarrier interference (ICI) are generated in ...
Xiang YU, Yanni GAO, Sirui DUAN
openaire +2 more sources