Blind dual error antenna diversity (DEAD) algorithm for beamforming antenna systems
US6950477B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jun 8, 2001 |
| Grant date | Sep 27, 2005 |
| Priority date | — |
| Expiry date | Jul 1, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/0363
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An adaptive antenna system includes N antennae, N forward equalizers operatively coupled to a respective one of the N antennae, and N processors performing a constant modulus algorithm (CMA) to thereby generate N respective control signals which adapt coefficients associated with each respective one of the forward equalizer. Preferably, the adaptive antenna system also includes a sampling device receiving a signal based on the collected output of the N forward equalizers, and a feedback equalizer receiving an output of the sampling device and generating a feedback signal biasing the signal received by the sampling device. If desired, the N control signals are applied to the N respective forward equalizers during a first operating mode, and a selected one of the N control signals is applied to the N forward equalizers during second mode of operation. A method of operating a beamforming antenna system is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.