Method for processing an OFDM signal
US7388921B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 12, 2004 |
| Grant date | Jun 17, 2008 |
| Priority date | — |
| Expiry date | May 20, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/266
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
When decoding an OFDM signal, frame and frequency synchronisation is necessary. The invention shows a method enabling a high accuracy for frame and frequency synchronization, which leads to a very low error rate in comparison to prior art. The inventive method for processing an OFDM (Orthogonal Frequency Division Multiplex)-signal is based on calculating (S5) a maximum of metric values (Λ) for arrangements between a reference pilot pattern (REF-PP) and a received pilot pattern (REC-PP), on determining the respective maximizing arrangement, and on determining (S7) and maximizing integer frequency ({circumflex over (f)}I) and time offsets ({circumflex over (T)}sy) for frame synchronization and/or frequency synchronization (S8) of said OFDM-signal, wherein the calculation of said metric values (Λ) is based on the evaluation of pairs (REF-PC-PAIR (P,(k, l); P(k, l+Nl))) of reference pilot cells (REF-PC), the members of said pairs (REF-PC-PAIR (P,(k, l); P(k, l+Nl))) corresponding to the same discrete frequency (k) and to different discrete times (l), and based on the signals (R(k, l), R(k, l+Nl)) of corresponding received cells with respect to said discrete frequencies (k) and sad disc…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.