Pilot signal in an FDMA communication system
US8279978B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 15, 2011 |
| Grant date | Oct 2, 2012 |
| Priority date | — |
| Expiry date | Aug 15, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2672
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for receiving a pilot symbol in a receiver is disclosed. In one embodiment, the method includes removing a cyclic prefix from a received sequence to produce a modified sequence, transforming the modified sequence to a first frequency domain sequence according to a first transform, demapping a plurality of distributed subcarriers in the transformed modified sequence to extract a plurality of received symbols, deriving an intermediate channel estimate for each of the plurality of received symbols, and interpolating a final channel estimate based on the plurality of derived intermediate channel estimates. In one exemplary embodiment, the received symbols have one or more predefined characteristics such as a constant amplitude, and zero autocorrelation (CAZAC sequence).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.