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A Double-Threshold Channel Estimation Method Based on Adaptive Frame Statistics.
Publication Type: Academic Journal
Source(s): Mathematics (2227-7390). Aug2023, Vol. 11 Issue 15, p3342. 22p.
Abstract: Channel estimation is an important module to enhance the performance of orthogonal frequency division multiplexing (OFDM) systems. However, the presence of a large amount of noise in time-varying multipath fading channels significantly affects the chan...
Underwater Acoustic Channel Estimation via an Orthogonal Matching Pursuit Algorithm Based on the Modified Phase-Transform-Weighted Function.
Publication Type: Academic Journal
Source(s): Journal of Marine Science & Engineering. Jul2023, Vol. 11 Issue 7, p1397. 22p.
Abstract: In the context of torpedo guidance systems, the performance of active sonar in channel parameter estimation and target detection and recognition is significantly degraded by the multipath effect and the time-varying characteristics of the underwater ac...
Spectrum Allocation and User Scheduling Based on Combinatorial Multi-Armed Bandit for 5G Massive MIMO.
Publication Type: Academic Journal
Source(s): Sensors (14248220). Sep2023, Vol. 23 Issue 17, p7512. 15p.
Abstract: As a key 5G technology, massive multiple-input multiple-output (MIMO) can effectively improve system capacity and reduce latency. This paper proposes a user scheduling and spectrum allocation method based on combinatorial multi-armed bandit (CMAB) for ...
Iterative Pilot-Based Reference Frame Estimation for Improved Data Rate in Two-Dimensional Display Field Communications.
Publication Type: Academic Journal
Source(s): Applied Sciences (2076-3417). Sep2023, Vol. 13 Issue 17, p9916. 14p.
Abstract: Recently, display-to-camera (D2C) communication, including display field communication (DFC), has gained attention due to advancements in display technology and the widespread availability of cameras in handheld devices. In this study, we proposed an i...
Superimposed Perfect Binary Array-Aided Channel Estimation for OTFS Systems.
Publication Type: Academic Journal
Source(s): Entropy. Aug2023, Vol. 25 Issue 8, p1163. 18p.
Abstract: Orthogonal time-frequency space (OTFS) modulation outperforms orthogonal frequency-division multiplexing in high-mobility scenarios through better channel estimation. Current superimposed pilot (SP)-based channel estimation improves the spectral effici...
Deep Learning Peephole LSTM Neural Network-Based Channel State Estimators for OFDM 5G and Beyond Networks.
Publication Type: Academic Journal
Source(s): Mathematics (2227-7390). Aug2023, Vol. 11 Issue 15, p3386. 19p.
Abstract: This study uses deep learning (DL) techniques for pilot-based channel estimation in orthogonal frequency division multiplexing (OFDM). Conventional channel estimators in pilot-symbol-aided OFDM systems suffer from performance degradation, especially in...
Model-Driven Deep-Learning-Based Underwater Acoustic OTFS Channel Estimation.
Publication Type: Academic Journal
Source(s): Journal of Marine Science & Engineering. Aug2023, Vol. 11 Issue 8, p1537. 18p.
Abstract: Accurate channel estimation is the fundamental requirement for recovering underwater acoustic orthogonal time–frequency space (OTFS) modulation signals. As the Doppler effect in the underwater acoustic channel is much more severe than that in the radio...
On Scalability of FDD-Based Cell-Free Massive MIMO Framework.
Publication Type: Academic Journal
Source(s): Sensors (14248220). Aug2023, Vol. 23 Issue 15, p6991. 20p.
Abstract: Cell-free massive multiple-input multiple-output (MIMO) systems have the potential of providing joint services, including joint initial access, efficient clustering of access points (APs), and pilot allocation to user equipment (UEs) over large coverag...
An Improved SAMP Algorithm for Sparse Channel Estimation in OFDM System.
Publication Type: Academic Journal
Source(s): Sensors (14248220). Aug2023, Vol. 23 Issue 15, p6668. 14p.
Abstract: Channel estimation of an orthogonal frequency division multiplexing (OFDM) system based on compressed sensing can effectively reduce the pilot overhead and improve the utilization rate of spectrum resources. The traditional SAMP algorithm with a fixed ...
Review on Channel Estimation for Reconfigurable Intelligent Surface Assisted Wireless Communication System.
Publication Type: Academic Journal
Source(s): Mathematics (2227-7390). Jul2023, Vol. 11 Issue 14, p3235. 30p.
Abstract: With the dramatic increase in the number of mobile users and wireless devices accessing the network, the performance of fifth generation (5G) wireless communication systems has been severely challenged. Reconfigurable intelligent surface (RIS) has rece...