Spectrum sensing apparatus and method for cooperative cognitive radio network in non-gaussian noise environment, and fusion center apparatus and cooperative cognitive radio system using the same
US9628996B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2014 |
| Grant date | Apr 18, 2017 |
| Priority date | — |
| Expiry date | Oct 20, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W16/14
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Disclosed herein are a spectrum sensing apparatus and method for a cognitive radio (CCR) network in a non-Gaussian noise environment and an FC apparatus and CCR system using the same. The cooperative cognitive radio (CCR) system includes M cognitive radios (CRs), and a fusion center (FC). Each of the M CRs samples a baseband signal obtained by down-converting a radio signal detected in the corresponding frequency spectrum, and generates spectrum sensing information (SSI) indicating that a PU signal has been detected based on the results of the sampling. The FC determines a joint threshold λFC that can maximize an expected average throughput of a secondary user (SU) signal in a given communication environment including a maximum interference condition, calculates a joint test statistic from received M pieces of SSI, and determines whether the PU signal is present by comparing the calculated joint test statistic with the joint threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.