Interleaving apparatus and method for symbol mapping in an HSDPA mobile communication system
US7200792B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2002 |
| Grant date | Apr 3, 2007 |
| Priority date | — |
| Expiry date | Jul 25, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2001/0098
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In an apparatus for data transmission in a communication system, a turbo encoder encodes data bits to generate systematic bits and parity bits, and a rate matcher matches the systematic bits and parity bits. A first interleaver writes the rate-matched systematic bits on a row by row basis, and performs inter-column permutation. A second interleaver writes the rate-matched parity bits on a row-by-row basis, and performs inter-column permutation. A modulator alternatively collects the permutated bits on a column by column basis from the first and second interleavers, and maps collected bits from the first and second interleavers onto one modulation symbol, wherein a size of the first interleaver is equal to a size of the second interleaver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.