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Joint channel estimation and multi-user detection for SDMA/OFDM based on dual repeated weighted boosting search [PDF]
, 2011 A joint channel estimation and Multi-User Detection (MUD) scheme is proposed for multi-user Multiple-Input Multiple-Output (MIMO) Space Division Multiple Access / Orthogonal Frequency-Division Multiplexing (SDMA/OFDM) systems.
Chen, Sheng +3 more
core +2 more sources
Fast Sparse Bayesian Learning-Based Channel Estimation for Underwater Acoustic OFDM Systems
Applied Sciences, 2022 Harsh underwater channels and energy constraints are the two critical issues of underwater acoustic (UWA) communications. To achieve a high channel estimation performance under a severe underwater channel, sparse Bayesian learning (SBL)-based channel ...
Yong-Ho Cho
doaj +1 more source
The Extended-Window Channel Estimator for Iterative Channel-and-Symbol Estimation
EURASIP Journal on Wireless Communications and Networking, 2005 L'application de l'algorithme de maximisation des attentes (EM) à l'estimation des canaux aboutit à un estimateur itératif de canaux et de symboles (ICSE) bien connu. L'EM-ICSE itère entre un estimateur de symbole basé sur la récursivité avant-arrière (égaliseur BCJR) et un estimateur de canal, et peut fournir des estimations approximatives de canal ...
Renato da Rocha Lopes, John R. Barry
openaire +4 more sources
Efficient Estimation of Pauli Channels [PDF]
ACM Transactions on Quantum Computing, 2020 Pauli channels are ubiquitous in quantum information, both as a dominant noise source in many computing architectures and as a practical model for analyzing error correction and fault tolerance. Here, we prove several results on efficiently learning Pauli channels and more generally the Pauli projection of a quantum channel.
Steven T. Flammia, Joel J. Wallman
openaire +2 more sources
Estimation in the Group Action Channel [PDF]
2018 IEEE International Symposium on Information Theory (ISIT), 2018 5 pages ...
Emmanuel Abbe +2 more
openaire +3 more sources
Kalman interpolation filter for channel estimation of LTE downlink in high-mobility environments [PDF]
, 2012 The estimation of fast-fading LTE downlink channels in high-speed applications of LTE advanced is investigated in this article. In order to adequately track the fast time-varying channel response, an adaptive channel estimation and interpolation ...
Dai, Xuewu +14 more
core +2 more sources
Channel Estimation Based on Statistical Frames and Confidence Level in OFDM Systems
Applied Sciences, 2018 Channel estimation is an important module for improving the performance of the orthogonal frequency division multiplexing (OFDM) system. The pilot-based least square (LS) algorithm can improve the channel estimation accuracy and the symbol error rate ...
Xiao Zhou +3 more
doaj +1 more source
Unitarity Estimation for Quantum Channels
IEEE Transactions on Information Theory, 2023 Estimating the unitarity of an unknown quantum channel $\mathcal{E}$ provides information on how much it is unitary, which is a basic and important problem in quantum device certification and benchmarking. Unitarity estimation can be performed with either coherent or incoherent access, where the former in general leads to better query complexity while ...
Kean Chen +3 more
openaire +3 more sources
Advanced Channel Estimation for MIMO-OFDM in Realistic Channel Conditions
, 2007 An advanced decision-directed channel estimation scheme is proposed, which is suitable for employment in a wide range of multi-antenna multi-carrier systems as well as for communications over the entire range of practical channel conditions.
Akhtman, J. +3 more
core +2 more sources
Pilot design for underwater MIMO cosparse channel estimation based on compressed sensing
International Journal of Distributed Sensor Networks, 2021 In multiple-input multiple-output–orthogonal frequency-division multiplexing underwater acoustic communication systems, the correlation of the sampling matrix is the key of the channel estimation algorithm based on compressed sensing. To reduce the cross-
Yun Li +4 more
doaj +1 more source