Interleaving/de-interleaving using compressed bit-mapping sequences
US7600164B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 17, 2004 |
| Grant date | Oct 6, 2009 |
| Priority date | — |
| Expiry date | Mar 13, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/2767
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method of mapping input bit positions in an input sequence to output bit positions in an output sequence uses compressed mapping sequences stored in memory derived from a predetermined mapping function. The mapping function is decompressed into periodic component functions that are used to generate the compressed mapping sequences. Each compressed mapping sequence comprises a plurality of partial mapping values that represent one period of a corresponding component function or group of component functions. Partial mapping values are selected from each compressed mapping sequence based on a bit index of the current input bit and summed or otherwise combined to get an output index.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.