OFDM communication apparatus
US7646702B2 · kind B2 · utility
13Cited by
8References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 14, 2001 |
| Grant date | Jan 12, 2010 |
| Priority date | — |
| Expiry date | Aug 23, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/006
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An orthogonal frequency division multiplexing (OFDM) transmission apparatus and method generate a transmission sequence including first data, second data, and known signals such that more known signals are allocated to the first data than to the second data within the transmission sequence. The transmission sequence is OFDM multiplexed into a sequence of OFDM signals and transmitted. A receiver of the OFDM signal sequence uses the known signals for estimating transmission paths of the communicated OFDM signals and improving the reception of the data to which they are allocated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.