Methods and apparatus for combining and/or transmitting multiple symbol streams
US7706456B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2006 |
| Grant date | Apr 27, 2010 |
| Priority date | — |
| Expiry date | May 23, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/50
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A stream of modulation symbols from a zero symbol rate (ZSR) coding/modulation module and a stream of modulation symbols from another type of coding/modulation module are input into an interweaver module. The interweaver module mixes the two input streams when assigning modulation symbols to be communicated in a segment. If a ZSR modulation symbol is non-zero, the ZSR modulation symbol is allocated a transmission position. If the ZSR modulation symbol is a zero modulation symbol, the modulation symbol from the other coding/modulation module is allocated the transmission position. The non-zero modulation symbols from the ZSR module are higher in power than the non-zero modulation symbols from the other module, thus facilitating detection and recovery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.