Preamble symbol transmitting method and device, and preamble symbol receiving method and device
US10778484B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 16, 2015 |
| Grant date | Sep 15, 2020 |
| Priority date | — |
| Expiry date | Apr 16, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/3818
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Provided are a preamble symbol generation method and receiving method, and a relevant frequency-domain symbol generation method and relevant device. The generated preamble symbol contains: a time-domain symbol with a first three-segment structure; or a time-domain symbol with a second three-segment structure; or a free combination of several time-domain symbols with the first three-segment structure and/or several time-domain symbols with the second three-segment structure arranged in any order. Using the entirety or a portion of a certain length of a time-domain main body signal as a prefix, it is possible to perform coherent detection, which solves the issues of performance degradation with non-coherent detection and differential decoding failure under complex frequency selective fading channels, and generating a postfix or hyper prefix based on the truncation of the entirety or a portion of the time-domain main body signal would enable the generated preamble symbol to have sound fractional frequency offset estimation performance and timing synchronization performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.