Time and frequency interleaving system for transmitting digital data between fixed or mobile stations
US6704366B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 2000 |
| Grant date | Mar 9, 2004 |
| Priority date | — |
| Expiry date | Jun 8, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/50
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A transmitter for a radio transmission system has an encoder for encoding data according to an error correction code and supplying a digital output stream of bits which are then distributed over a selectable number of carriers belonging to a group of carriers that are uniformly distributed over a transmission channel, so as to constitute a frequency division multiplex. Then the stream is subjected to time interleaving responsive to a distribution given by the bit spreading module which achieves distribution and frequency interleaving operating on the carriers; the stream is then modulated in phase or possibly a phase and amplitude. A receiver matched with the transmitter has, in sequence, a time and frequency synchronizing module, a time-frequency transform module, a phase demodulator, a frequency deinterleaving module, a time deinterleaving module, and a decoder performing Viterbi decoding, bit deinterleaving, and a selecting interface module for selecting a set of operating parameters corresponding to those of the transmitted stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.