Procedure for estimating amplification factors of a CDMA signal
US7310366B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 19, 2003 |
| Grant date | Dec 18, 2007 |
| Priority date | — |
| Expiry date | Mar 5, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J13/004
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention concerns a procedure for estimating unknown amplification factors of a received CDMA signal, which encompasses a plurality of code channels, in which respectively an input signal from a symbol plane is split on a symbol plane through splitting with a split code (ωab(ν)) in a chip plane. The procedure is executed in the following steps: formation of a cost function dependent upon estimated values of all unknown amplification factors, partial differentiation of the cost function according to estimated value of the unknown amplification factors, formation of a matrix-vector-equation on the basis that all partial differentials of the cost function are zero and thus a minimum of the cost function is present, and the computation of at least some of the matrix coefficients of the matrix-vector-equation with a correlation function on the symbol plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.