Results 71 to 80 of about 123,247 (141)
Switchable Deep Beamformer [PDF]
arXiv, 2020 Recent proposals of deep beamformers using deep neural networks have attracted significant attention as computational efficient alternatives to adaptive and compressive beamformers. Moreover, deep beamformers are versatile in that image post-processing algorithms can be combined with the beamforming. Unfortunately, in the current technology, a separate
arxiv
Joint beamforming and reflection design for IRS‐aided co‐existing radar and communication
Electronics Letters, Volume 61, Issue 1, January/December 2025.Optimum performance of co‐existing radar and communication (CRC) system is a challenging task when the target and user exist within a crowded area where path‐loss is dominant. Inspired by the application of intelligent reflecting surface (IRS) in reconstructing the wireless transmission environment, this paper investigates deploying IRS to the CRC ...
Qijun Deng +4 more
wiley +1 more source
URGLQ: An Efficient Covariance Matrix Reconstruction Method for Robust Adaptive Beamforming [PDF]
arXiv, 2022 The computational complexity of the conventional adaptive beamformer is relatively large, and the performance degrades significantly due to the model mismatch errors and the unwanted signals in received data. In this paper, an efficient unwanted signal removal and Gauss-Legendre quadrature (URGLQ)-based covariance matrix reconstruction method is ...
arxiv
Robust Adaptive LCMV Beamformer Based On An Iterative Suboptimal Solution [PDF]
Radioengineering, 2015 The main drawback of closed-form solution of linearly constrained minimum variance (CF-LCMV) beamformer is the dilemma of acquiring long observation time for stable covariance matrix estimates and short observation time to track dynamic behavior of ...
Xiansheng Guo, Lei Chu, Baocang Li
doaj
A Real-Time Dual-Microphone Speech Enhancement Algorithm Assisted by Bone Conduction Sensor
Sensors, 2020 The quality and intelligibility of the speech are usually impaired by the interference of background noise when using internet voice calls. To solve this problem in the context of wearable smart devices, this paper introduces a dual-microphone, bone ...
Yi Zhou +3 more
doaj +1 more source
Electronics Letters, Volume 61, Issue 1, January/December 2025.This article proposes a distributed minimum variance distortionless response (MVDR) beamformer for speech enhancement, where the network‐wide steering vector used for generating MVDR is estimated in a distributed way. This method is iteratively performed, and in each iteration, the steering matrix and the beamformer coefficient are simultaneously ...
Xingyue Cui, Rui Wang
wiley +1 more source
Speaker Adapted Beamforming for Multi-Channel Automatic Speech Recognition [PDF]
arXiv, 2018 This paper presents, in the context of multi-channel ASR, a method to adapt a mask based, statistically optimal beamforming approach to a speaker of interest. The beamforming vector of the statistically optimal beamformer is computed by utilizing speech and noise masks, which are estimated by a neural network.
arxiv
IET Microwaves, Antennas &Propagation, Volume 19, Issue 1, January/December 2025.This study employs a method that combines adaptive beamforming (ABF) with self‐interference cancellation (SIC) to reduce self‐interference (SI) coupling among the STAR transceiver subarrays. On the basis of this premise, this paper presents an innovative method for simplifying the array's structure by integrating the traditional genetic algorithm (GA ...
Yong Bo +6 more
wiley +1 more source
Energy-Efficient Deterministic Adaptive Beamforming Algorithms for Distributed Sensor/Relay Networks [PDF]
arXiv, 2015 In this study, energy-efficient deterministic adaptive beamforming algorithms are proposed for distributed sensor/relay networks. Specifically, DBSA, D-QESA, D-QESA-E, and a hybrid algorithm, hybrid-QESA, that combines the benefits of both deterministic and random adaptive beamforming algorithms, are proposed. Rigorous convergence analyses are provided
arxiv
Robust Beamforming for Ultrasonic Imaging using Wavelet-based Thresholding and Coherence Weighting [PDF]
International Journal of Industrial Electronics, Control and OptimizationThe delay-and-sum (DS) beamforming and delay-weight-and-sum (DWS) beamforming are primary methods in ultrasonic imaging with phased arrays. Total focusing method (TFM) and Minimum Variance (MV) based adaptive beamforming are well-known methods within DS ...
Mozhgan Ehsani +2 more
doaj +1 more source