Method for transmitting scattered pilot signals in multi-carrier system
US8311134B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2008 |
| Grant date | Nov 13, 2012 |
| Priority date | — |
| Expiry date | Jun 21, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/0232
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for transmitting scattered pilot signals in a multi-carrier system is disclosed. The method includes: in each time slot, in time dimension, putting each 4 OFDM symbols into a group according to the order of the OFDM symbols; in each group of OFDM symbols, in frequency dimension, selecting, for each OFDM symbol, a plurality of valid sub-carriers to transmit scattered pilots, wherein for a same OFDM symbol, between each 2 valid sub-carriers selected, there are 7 valid sub-carriers; for different OFDM symbols in a same group, the valid sub-carriers selected are interleaving in frequency domain; and transmitting scattered pilot signals on the valid sub-carriers selected. The solution helps the multi-carrier system to handle multi-path channel with large delay spread, to obtain more accurate channel estimation and to achieve better receiving performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.