Null detector and method thereof
US7873123B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2007 |
| Grant date | Jan 18, 2011 |
| Priority date | — |
| Expiry date | Jul 23, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q3/2611
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A null detector and its corresponding method are provided. The null detector includes a power detector, a smoother, and an overlapper. The power detector outputs a power level signal according to the power level of a received signal. The smoother is coupled to the power detector for determining according to the power level signal whether the received signal is transmitting a null symbol, and then the smoother outputs a null detection signal at a first state value or a second state value indicating the result of the determination. The overlapper is coupled to the smoother for providing the duration and position of the null symbols transmitted by the received signal according to the null detection signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.