Results 51 to 60 of about 128,917 (278)
International Journal of Aerospace EngineeringAimed at the antijamming needs of the space tracking, telemetry command (TT&C) receiver under a low signal-to-noise ratio, the anti-interference advantage of the dual-sequence frequency hopping (DSFH) communication system is applied.
Guangkai Liu +4 more
doaj +1 more source
Least Square Estimation-Based Different Fast Fading Channel Models in MIMO-OFDM Systems
International Transactions on Electrical Energy Systems, 2023 In cellular wireless communication systems, channel estimation (CE) plays a pivotal role as a crucial technique applied in orthogonal frequency division multiplexing (OFDM) modulation. CE utilizes a variety of methods, including decision-directed channel
Walaa Hussein +6 more
doaj +1 more source
Optimal Power Control in Decentralized Gaussian Multiple Access Channels
, 2018 We consider the decentralized power optimization problem for Gaussian fast-fading multiple access channel (MAC) so that the average sum-throughput is maximized.
Singh, Kamal
core +1 more source
Advanced Materials, EarlyView.A green, freeform manufacturing approach that utilizes robust aqueous two‐phase systems to create intricate and scalable photonic structures and non‐planar mechanochromic hydrogel actuators from plant‐based hydroxypropyl cellulose. This approach broadens the structural possibilities of sustainable photonic devices and mechanochromic systems, offering ...
Xiao Song +14 more
wiley +1 more source
Sensing-Assisted Secure Communications over Correlated Rayleigh Fading Channels
EntropyWe consider a secure integrated sensing and communication (ISAC) scenario, where a signal is transmitted through a state-dependent wiretap channel with one legitimate receiver with which the transmitter communicates and one honest-but-curious target that
Martin Mittelbach +4 more
doaj +1 more source
Jurnal Nasional Teknik Elektro, 2017 This study is the simulation of SPIHT image compression using diversity selection combining techniques. The image is compressed by using SPIHT compression techniques after wavelet decomposition.
Baharuddin Abbas
doaj +1 more source
Measuring the Impact of Beamwidth on the Correlation Distance of 60 GHz Indoor and Outdoor Channels
IEEE Open Journal of Vehicular Technology, 2021 Due to narrow beamwidth and channel sparseness, millimeter-wave receivers will detect much less multipath than their microwave counterparts, fundamentally changing the small-scale fading properties.
Aidan Hughes +6 more
doaj +1 more source
Multiuser diversity in correlated Rayleigh-fading channels [PDF]
EURASIP Journal on Wireless Communications and Networking, 2012 This article studies the effect of scheduling and multiuser diversity on the performance of correlated Rayleigh-fading channels. More specifically, the power-limited channel average rate is obtained for quasi-static correlated fading channels. The results are obtained in the cases where there is perfect or imperfect channel state information available ...
Behrooz Makki, Thomas Eriksson
openaire +1 more source
Advanced Materials, EarlyView.Metasurface‐engineered NC‐TENG arrays integrate tactile pressure mapping, non‐contact gesture sensing, and acoustic signal readouts in one ultrathin module, and outperforms pristine PDMS in terms of electrical output and real‐time spatial mapping for next‐gen wearables.
Injamamul Arief +12 more
wiley +1 more source
Jordanian Journal of Computers and Information Technology, 2020 In this paper, the least-squares channel estimation (LSCE) is investigated for Massive-Multiple-Input Multiple-Output (Ma-MIMO) OFDM systems based on pilot tones.
Abdelhamid Riadi +2 more
doaj +1 more source