Apparatus and method for reducing co-channel radio interference
US6233443A · kind A · utility
18Cited by
10References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 13, 1999 |
| Grant date | May 15, 2001 |
| Priority date | — |
| Expiry date | Dec 13, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/126
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An apparatus and method reducing interference between multiple frequency modulated, FM, voice transmissions present in the same frequency bandwidth by receiving a radio signal which includes a first FM voice signal to be demodulated along with one or more additional FM voice signals which are present within a modulation bandwidth of the first FM voice signal, detecting the presence of a carrier frequency signal of the first FM signal and determining a lack of modulation of the detected carrier frequency signal by a voice signal, and squelching the received signal when the carrier signal is unmodulated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.