Method and apparatus for transmission and reception of data
US7489755B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2005 |
| Grant date | Feb 10, 2009 |
| Priority date | — |
| Expiry date | Jun 26, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03522
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Various embodiments are described to provide for the transmission and reception of data in an improved manner. Data transmission is improved by including in a transmitter a null generator (110) to generate an output data symbol sequence that exhibits nulls in the frequency domain at particular frequencies that an input data symbol sequence does not. A pilot inserter (120) then adds a pilot symbol sequence to this output data symbol sequence to create a combined symbol sequence. Since the pilot symbol sequence exhibits pilot signals corresponding to the nulls of the output data symbol sequence in the frequency domain, the combined symbol sequence exhibits pilots that are orthogonal to the data in the frequency domain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.