Differentially encoded pilot word system and method for wireless transmissions of digital data
US5809083A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 23, 1994 |
| Grant date | Sep 15, 1998 |
| Priority date | — |
| Expiry date | Nov 23, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J3/0605
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system and method for transmitting digital data over a wireless channel uses periodically-transmitted, differentially encoded pilot words to allow a receiver to rapidly synchronize with a transmitter. Each differentially encoded pilot word comprises at least two pilot symbols that are separated by a fixed difference. The receiver monitors differences between symbols to locate the differentially encoded pilot words, and to thereby become synchronized with the transmitter. Once the receiver becomes synchronized with the transmitter, the receiver uses the pilot symbols of the differentially encoded pilot words to perform channel estimation and compensation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.