Code allocation method in an MC-CDMA telecommunication system
US7428248B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 11, 2002 |
| Grant date | Sep 23, 2008 |
| Priority date | — |
| Expiry date | Mar 16, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/026
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A object of the present invention is to decrease or avoid the distortion of an MC-CDMA signal transmitted over a reverse link channel for a given amplifier efficiency.The present invention concerns a code allocation method for a mobile telecommunication system. According to the invention, for each of a plurality of available spreading codes or available combinations of spreading codes a value of a first variable (PAPRk) characteristic of the dynamic range of a modulated signal (Sk) is determined, and for each of a plurality of users a value of a second variable (αk) characteristic of the propagation loss incurred over the transmission channel of the user is determined. A spreading code or combination of spreading codes producing a low dynamic range is allocated to said user if the propagation loss over its transmission channel is high.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.