Adaptive filter equalizer systems
US4733402A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 23, 1987 |
| Grant date | Mar 22, 1988 |
| Priority date | — |
| Expiry date | Apr 23, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0894
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An adaptive filter (11) for use in a diversity receiver system (10) which includes circuitry (23, 24, 25, 26, 34) for determining the strongest received diversity signal or group of signals at each of a plurality of time delays or group of time delays and circuitry (27, 28, 29, 30, 31, 34) for calculating a weighting signal and for weighting only the strongest received diversity signal or group of signals at each of the time delays or group of time delays, the other received diversity signals at each time delay thereby being in effect weighted by zero. The weighted signals are then combined in a delay line (32, 33) having a plurality of taps at such time delays to produce an output receiver signal. In a particular embodiment, for example, the received signals are complex signals and the weights used for the strongest received diversity signal at each time delay are quantized weights selected from the group .+-.1.+-.j.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.