Channel quality determination of a wireless communication channel based on received data
US8520755B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2009 |
| Grant date | Aug 27, 2013 |
| Priority date | — |
| Expiry date | Oct 28, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/206
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The invention refers to a method of determining a channel quality of a communication channel between a wireless transmitter and a wireless receiver, comprising receiving a transport block with one or a plurality of a modulation symbols (y1, . . . , ym) comprising a plurality of encoded information bits (x1, . . . , xn), de-mapping the modulation symbols to a plurality of soft values (LLR1, . . . , LLRn), calculating a mutual information—MI—measure (MI) as a function of the plurality of soft values (LLR1, . . . , LLRn), wherein the MI measure is indicative of a mutual dependence between the information bits (x1, . . . , xn) and the corresponding soft values of said transport block, and determining a channel quality indication value (CQI-Index) as a function of the MI measure (MI). The invention further refers to a program and to a wireless receiver for performing the method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.