Reference symbol structure for DFT spread OFDM system
US8891662B2 · kind B2 · utility
10Cited by
1References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 14, 2010 |
| Grant date | Nov 18, 2014 |
| Priority date | — |
| Expiry date | Jun 14, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2614
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Provided is a data transmission apparatus to transmit a reference orthogonal frequency division multiplexing (OFDM) symbol generated by frequency division multiplexing a reference symbol and a data symbol, and a data reception apparatus to estimate a channel using the reference OFDM symbol. Since the reference symbol and the data symbol are frequency division multiplexed, a Peak to Average Power Ratio (PAPR) may not increase greatly, and the transmission apparatus may transmit the reference OFDM symbol to the data reception apparatus more frequently. Accordingly, the data reception apparatus may estimate a channel accurately.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.