Data transmission method, transmitter, and receiver
US6449266B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2000 |
| Grant date | Sep 10, 2002 |
| Priority date | — |
| Expiry date | Feb 10, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/7093
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention relates to a data transmission method, a transmitter and a receiver in a system which utilizes the CDMA method, in which several users communicate simultaneously on the same frequency band, and in which each user has its own spreading code, and in which the information channel capacity of at least one user differs from the capacity of the other users, the receiver comprising converter means for converting a received transmission into a digital form, and a number of means for synchronizing and for calculating the characteristic required for a decision from the transmission of each received user. In order to advantageously receive transmissions with multiple data rates or capacities in a receiver according to the invention, said number of means each comprise a group of correlators which may synchronized with waveforms of different types, and the receiver comprises means for processing said characteristics calculated for different types of waveforms by eliminating the effect of their mutual correlations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.