System and method for adaptive equalization in a wireless communication system
US6766142B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 23, 2001 |
| Grant date | Jul 20, 2004 |
| Priority date | — |
| Expiry date | Dec 16, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W52/24
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A wireless communication device receives audio data from a base station via a radio frequency (RF) communication link (i.e., a forward link) and transmits audio data to the base station via the RF communication link (i.e., a reverse link). The wireless communication device uses the inherent functionality of the reverse link, including an audio input device (120) to determine whether the wireless communication device is operating in a high noise environment. A signal analyzer (124) analyzes the audio signal on the reverse link and determines whether the ambient noise level exceeds predetermined threshold. If so, the signal analyzer (124) activates a filter (126) to filter the audio signal being provided to an audio output transducer (122). Band limiting the audio signal provided to the audio output transducer (122) improves intelligibility of the audio signal in the presence of noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.