Results 1 to 10 of about 96,923 (298)
Constellation Precoded Beamforming [PDF]
arXiv, 2009 We present and analyze the performance of constellation precoded beamforming. This multi-input multi-output transmission technique is based on the singular value decomposition of a channel matrix. In this work, the beamformer is precoded to improve its diversity performance.
Hong Ju Park, Ender Ayanoglu
arxiv +5 more sources
Blind Interference Suppression with Uncalibrated Phased-Array Processing [PDF]
SensorsAs the number of devices using wireless communications increases, the amount of usable radio frequency spectrum becomes increasingly congested. As a result, the need for robust, adaptive communications to improve spectral efficiency and ensure reliable ...
Lauren O. Lusk, Joseph D. Gaeddert
doaj +2 more sources
Conference Record of the Thirty-Sixth Asilomar Conference on Signals, Systems and Computers, 2002., 2003 The Capon beamformer has better resolution and much better interference rejection capability than the standard (data-independent) beamformer, provided that the array steering vector corresponding to the signal of interest (SOI) is accurately known. However, whenever the knowledge of the SOI steering vector is imprecise (as is often the case in practice)
Petre Stoica, Zhisong Wang, Jian Li
openalex +3 more sources
Hybrid Beamforming in Massive MIMO for Next-Generation Communication Technology
Sensors, 2023 Hybrid beamforming is a viable method for lowering the complexity and expense of massive multiple-input multiple-output systems while achieving high data rates on track with digital beamforming.
Shahid Hamid +7 more
doaj +1 more source
Machine Learning-Based Beamforming in K-User MISO Interference Channels
IEEE Access, 2021 In this paper, we consider a K-user multiple-input and single-output interference channel and propose a machine learning-based beamforming design. To circumvent the difficulties of beamforming design in interference channels, we consider a beamforming ...
Hyung Jun Kwon, Jung Hoon Lee, Wan Choi
doaj +1 more source
IEEE Journal of Microwaves, 2021 Orthogonality in multibeam antennas is revisited. The difference between orthogonal beamforming and zero-forced beamforming is highlighted. The intriguing relation between orthogonality, reciprocity and losses is recapitulated.
Yanki Aslan +4 more
doaj +1 more source
Minimum Processing Beamforming [PDF]
IEEE/ACM Transactions on Audio, Speech, and Language Processing, 2021 Most of the well-known classic beamformers have resulted from optimization problems that minimize a cost function such as the mean-square error (MSE) between the noisy speech and a reference clean speech. The rationale behind these formulations involves a speech-versus-noise dichotomy, where anything branded as noise shall be suppressed as much as ...
Adel Zahedi +5 more
openaire +2 more sources
Assessment of multi-target distinguishing using deconvolved conventional beamforming [PDF]
MATEC Web of Conferences, 2019 Multi-target distinguishing based on beamforming is a popular topic in array signal processing. Conventional beamforming as a frequently used method is robust but constrained by the Rayleigh limit.
Lan Hualin +4 more
doaj +1 more source
Brain and Behavior, Volume 12, Issue 12, December 2022., 2022 Abstract Purpose Our purpose was to explore the relationship between cognitive impairment and neural network changes in patients newly diagnosed with self‐limited epilepsy with centrotemporal spikes (SeLECTS). Methods The Wechsler Intelligence Scale for Children, fourth edition was used to divide all SeLECTS patients into two groups: patients with full‐
Yihan Li +7 more
wiley +1 more source
Mapping Interictal activity in epilepsy using a hidden Markov model: A magnetoencephalography study
Human Brain Mapping, Volume 44, Issue 1, Page 66-81, January 2023., 2023 In this study, we use hidden Markov modeling (HMM) to create a unique statistical model of interictal brain activity for 10 pediatric epilepsy patients. This data‐driven model produces an output unique to each patient, and is used to localize the epileptogenic area(s).
Zelekha A. Seedat +13 more
wiley +1 more source