Interleaver, deinterleaver, interleaving method, and deinterleaving method for OFDM data
US7170849B1 · kind B1 · utility
119Cited by
3References
29Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 8, 2002 |
| Grant date | Jan 30, 2007 |
| Priority date | — |
| Expiry date | Jan 19, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0071
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An interleaver and interleaving method each includes two stages, and is useful in coded orthogonal frequency division multiplexed (COFDM) wireless local area networks. A first stage performs a first block permutation and a second stage performs bit order permutation to effectuate a second group permutation. A corresponding de-interleaver does just the opposite at the receiver. A double-buffer version includes writing data into one memory block in a first order while reading data from the second block in a second order, with the first and second orders selected to effectuate the first block permutation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.