Spread spectrum communication system
US6272167A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 13, 1998 |
| Grant date | Aug 7, 2001 |
| Priority date | — |
| Expiry date | Aug 13, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2201/70701
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A correlation unit 100 de-spreads reception signal in a reception physical channel and a physical channel for channel estimation with a de-spread timing signal designated by a path control unit 330 and supplies the portions of reception symbols in the de-spread reception signal, corresponding to the pilot symbols and the reception symbols corresponding to the reception physical channel, to weighting coefficient estimation units 120 and a weighting circuit 130, respectively. The weighting coefficient estimation unit 120 carries out channel estimation corresponding to paths for individual finger units 200-1 through 200-8. The weighting circuit 130 multiplies a complex conjugate of the estimated weighting coefficient by the reception signal to produce the multiplication result to a RAKE combiner unit 400. The RAKE combiner unit 400 carries out maximum-ratio combining of the weighted reception signals supplied from the finger units 200-1 through 200-8 and produces the combination result via an output terminal 600.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.