Method and measurement configuration for measuring the characteristics of radio channels
US6353731B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2000 |
| Grant date | Mar 5, 2002 |
| Priority date | — |
| Expiry date | Jun 5, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B17/309
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method for measuring characteristics of radio channels, in which the signals are received by a total of M1 receiving sensors in a linear antenna array, in which case the respective received signals are composed of wave elements of a transmitted signal with a different incidence direction and different delay, the transmitted signal contains a preselected test sequence, and the incidence angle as well as the delay of the dominant wave fronts are estimated simultaneously, taking account of the chip signal form of the test sequence, the signals from each antenna sensor are demodulated, and sampling is then carried out with Mc samples per chip in the test sequence. In this case, the resultant Nc×Mc samples are transformed to the frequency domain by discrete Fourier transformation, and the values which are obtained from this are corrected taking account the spectrum of the chip signal form, in which case the line vectors formed from the values obtained for each sensor can be combined to form a data matrix XF′(n), which contains invariances which characterize the channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.