Method and apparatus for interleaving a data stream using quadrature permutation polynomial functions (QPP)
US8595584B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 2008 |
| Grant date | Nov 26, 2013 |
| Priority date | — |
| Expiry date | Feb 8, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/6525
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A semiconductor device comprising processing logic. The processing logic is arranged to configure interleaver logic to re-order data symbols of a data stream according to a quadrature permutation polynomial function. The processing logic is further arranged to: divide a cyclic group of values defined by the QPP function into a set of subgroups, the set of subgroups being capable of being defined by a set of linear functions; derive inverse functions for the set of linear functions defining the subgroups; and configure the interleaver logic to load the data symbols of the data stream into a buffer at locations within the buffer corresponding to a cyclic group of values representative of the inverse function for the QPP function based on the inverse functions of the set of linear functions defining the subgroups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.