Receiver and method of recovering data from radio signals
US6567462B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 1999 |
| Grant date | May 20, 2003 |
| Priority date | — |
| Expiry date | Jul 23, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2201/70701
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A receiver that operates to recover data from spread spectrum radio signals, which include radio signals generated from a combination of the data and a data spreading code associated with the user and radio signals generated from a combination of a predetermined sequence of pilot data and a pilot spreading code. The receiver includes a plurality of antennas, each arranged to detect a different version of the radio signals. Base band conversion means is coupled to the plurality of antennas and arranged to generate, for each antenna, base band signal samples representative of the version of the radio signals. Data recovery means operates to correlate each version of the signal samples with respect to the pilot spreading code, form at least one covariance matrix from a frequency domain representation of a predetermined temporal window of the correlated pilot signals samples, correlate each version of the signal samples with respect to the user data spreading code, form a frequency domain representation of each version of the data correlated signal samples, and detect the data from the frequency domain data correlated signal samples in combination with the at least one covariance matri…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.