Results 51 to 60 of about 5,110,902 (386)
Power of Deep Learning for Channel Estimation and Signal Detection in OFDM Systems [PDF]
IEEE Wireless Communications Letters, 2017 This letter presents our initial results in deep learning for channel estimation and signal detection in orthogonal frequency-division multiplexing (OFDM) systems. In this letter, we exploit deep learning to handle wireless OFDM channels in an end-to-end
Hao Ye, Geoffrey Y. Li, B. Juang
semanticscholar +1 more source
Channel Estimation for Intelligent Reflecting Surface Assisted MIMO Systems: A Tensor Modeling Approach [PDF]
IEEE Journal on Selected Topics in Signal Processing, 2020 Intelligent reflecting surface (IRS) is an emerging technology for future wireless communications including 5G and especially 6 G. It consists of a large 2D array of (semi-)passive scattering elements that control the electromagnetic properties of radio ...
Gilderlan T. de Araújo +2 more
semanticscholar +1 more source
Optimal channels for channelized quadratic estimators
Journal of the Optical Society of America A, 2016 We present a new method for computing optimized channels for estimation tasks that is feasible for high-dimensional image data. Maximum-likelihood (ML) parameter estimates are challenging to compute from high-dimensional likelihoods. The dimensionality reduction from M measurements to L channels is a critical advantage of channelized quadratic ...
Eric Clarkson, Meredith Kupinski
openaire +3 more sources
Performance of adaptive bayesian equalizers in outdoor environments [PDF]
, 1997 Outdoor communications are affected by multipath propagation that imposes an upper limit on the system data rate and restricts possible applications. In order to overcome the degrading effect introduced by the channel, conventional equalizers implemented
Casadevall Palacio, Fernando José +1 more
core +1 more source
Channel Estimation and Training Design for Active RIS Aided Wireless Communications [PDF]
IEEE Wireless Communications Letters, early access, 2023, 2023 Active reconfigurable intelligent surface (ARIS) is a newly emerging RIS technique that leverages radio frequency (RF) reflection amplifiers to empower phase-configurable reflection elements (REs) in amplifying the incident signal. Thereby, ARIS can enhance wireless communications with the strengthened ARIS-aided links.
arxiv +1 more source
Integrated Sensing and Communication With Massive MIMO: A Unified Tensor Approach for Channel and Target Parameter Estimation [PDF]
IEEE Transactions on Wireless CommunicationsBenefitting from the vast spatial degrees of freedom, the amalgamation of integrated sensing and communication (ISAC) and massive multiple-input multiple-output (MIMO) is expected to simultaneously improve spectral and energy efficiencies as well as the ...
Ruoyu Zhang +6 more
semanticscholar +1 more source
Embedded Pilot-Aided Channel Estimation for OTFS in Delay–Doppler Channels [PDF]
IEEE Transactions on Vehicular Technology, 2018 Orthogonal time frequency space (OTFS) modulation was shown to provide significant error performance advantages over orthogonal frequency division multiplexing (OFDM) in delay–Doppler channels.
P. Raviteja, K. Phan, Yi Hong
semanticscholar +1 more source
Channel estimation for spatial modulation [PDF]
2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), 2013 In single-stream multiple-input multiple-output (MIMO) schemes, such as spatial modulation (SM) and space shift keying (SSK), a single transmit antenna is activated at any given time. Therefore, unlike multi-stream MIMO transmitters, simultaneous pilot transmissions are prohibitive because of a single radio-frequency (RF) chain.
Wu, Xiping +2 more
openaire +7 more sources
Detection of Channel Variations to Improve Channel Estimation Methods [PDF]
Circuits, Systems, and Signal Processing, 2014 “The final publication is available at Springer via http://dx.doi.org/[10.1007/s00034-014-9767-8]” [Abstract] In current digital communication systems, channel information is typically acquired by supervised approaches that use pilot symbols included in the transmit frames.
Dapena, Adriana +3 more
openaire +5 more sources
Compressive sensing based Bayesian sparse channel estimation for OFDM communication systems: high performance and low complexity [PDF]
, 2014 In orthogonal frequency division modulation (OFDM) communication systems, channel state information (CSI) is required at receiver due to the fact that frequency-selective fading channel leads to disgusting inter-symbol interference (ISI) over data ...
Adachi, Fumiyuki +3 more
core +4 more sources