A Spectrum Detection Method and Device with Unknown Noise Variance
A noise variance and noise variance estimation technology, which is applied in transmission monitoring, electrical components, transmission systems, etc., can solve the problems of increased detection difficulty, performance degradation, and difficulty in obtaining noise variance, and achieves low complexity and real-time requirements. The effect of improving spectrum sensing performance and low implementation complexity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment Construction
[0018] The invention establishes a dynamic state space model of spectrum sensing under the condition of unknown noise variance, and simultaneously uses edge particle filter technology to jointly estimate the noise variance and the state of the primary user. The dynamic system model and the spectrum sensing process are described separately below.
[0019] 1. The spectrum sensing dynamic state space model established by the present invention is shown in formula (1).
[0020]
[0021] In the above formula, Indicates the state of the authorized user at time n, which is transferred according to a specific state transition function f(.). x n Indicates authorized users to transmit signals. There are two kinds of hypothesis tests in spectrum sensing, that is, the authorized user signal does not exist and the authorized user signal exists, respectively using H 0 and H 1 express. When the licensed user signal does not exist, that is, the licensed frequency band is idle, x n =...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com