Results 31 to 40 of about 26,944 (191)

Some new inequalities for the minimum eigenvalue of M-matrices [PDF]

Journal of Inequalities and Applications, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Wang, Feng, Sun, De-shu
openaire   +1 more source

Cooperative Spectrum Sensing Algorithm Based on Double Eigenvalue Limiting Distribution

Dianxin kexue, 2014
A spectrum sensing algorithm using double eigenvalue limiting（DEL）distributions was presented. The difference between the maximum and the minimum eigenvalue was exploited as the test statistic.
Zhijin zhao, Weikang Hu, Haiquan Wang
doaj   +2 more sources

Some Bounds on Eigenvalues of the Hadamard Product and the Fan Product of Matrices

Mathematics, 2019
In this paper, an upper bound on the spectral radius ρ ( A ∘ B ) for the Hadamard product of two nonnegative matrices (A and B) and the minimum eigenvalue τ ( C ★ D ) of the Fan product of two M-matrices (C and D) are researched.
Qianping Guo, Jinsong Leng, Houbiao Li, Carlo Cattani   +3 more
doaj   +1 more source

Maximizing the Minimum Eigenvalue in Constant Dimension

CoRR
In an instance of the minimum eigenvalue problem, we are given a collection of $n$ vectors $v_1,\ldots, v_n \subset {\mathbb{R}^d}$, and the goal is to pick a subset $B\subseteq [n]$ of given vectors to maximize the minimum eigenvalue of the matrix $\sum_{i\in B} v_i v_i^{\top} $.
Adam Brown, Aditi Laddha, Mohit Singh
openaire   +2 more sources

An eigenvalue distribution derived ‘Stability Measure’ for evaluating Minimum Variance portfolios [PDF]

, 2022
The Minimum Variance portfolio is subject to varying degrees of stability and robustness. We, therefore, propose a theoretical measure of its stability relative to a Marchenko–Pastur derived random correlation matrix.
Smyth, William, Broby, Daniel
core   +1 more source

Cooperative Spectrum Sensing Using Eigenvalue Fusion for OFDMA and Other Wideband Signals

Journal of Sensor and Actuator Networks, 2013
In this paper, we propose a new approach for the detection of OFDMA and other wideband signals in the context of centralized cooperative spectrum sensing for cognitive radio (CR) applications.
Dayan A. Guimarães, Carlos R. N. da Silva, Rausley A. A. de Souza   +2 more
doaj   +1 more source

Machine Learning Methods for Inferring the Number of UAV Emitters via Massive MIMO Receive Array

Drones, 2023
To provide important prior knowledge for the direction of arrival (DOA) estimation of UAV emitters in future wireless networks, we present a complete DOA preprocessing system for inferring the number of emitters via a massive multiple-input multiple ...
Yifan Li, Feng Shu, Jinsong Hu, Shihao Yan, Haiwei Song, Weiqiang Zhu, Da Tian, Yaoliang Song, Jiangzhou Wang   +8 more
doaj   +1 more source

Optimal Controller and Filter Realisations using Finite-precision, Floating- point Arithmetic. [PDF]

, 2005
The problem of reducing the fragility of digital controllers and filters implemented using finite-precision, floating-point arithmetic is considered.
Whidborne, James F., Wu, Jun, Chen, Sheng, Gu, Da-Wei, Whidborne, J.F., Wu, J., Gu, D.-W., Chen, S.   +7 more
core   +1 more source

Characteristic Min-Polynomial and Eigen Problem of a Matrix over Min-Plus Algebra

JTAM (Jurnal Teori dan Aplikasi Matematika), 2023
Let R_ε=R∪{-∞}, with R being a set of all real numbers. The algebraic structure (R_ε,⊕,⊗) is called max-plus algebra. The task of finding the eigenvalue and eigenvector is called the eigenproblem.
Sahmura Maula Al Maghribi, Siswanto Siswanto, Sutrima Sutrima   +2 more
doaj   +1 more source

Analyzing Performance of Eigenvalue-based Spectrum Sensing within LoRaCog Framework

Journal of Telecommunications and Information Technology
The CR technology enhances spectrum utilization by allowing access to unused licensed channels, while spectrum sensing allows secondary users to verify channel availability before the transmission.
Batool Jaafar Bashar, Hikmat Abdullah
doaj   +1 more source