Iterative interference canceller for wireless multiple-access systems employing closed loop transmit diversity
US7623602B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2006 |
| Grant date | Nov 24, 2009 |
| Priority date | — |
| Expiry date | May 7, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03375
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An interference-canceling receiver processes coded, multiple-access, spread-spectrum transmissions that propagate through frequency-selective communication channels from multiple transmit antennas to multiple receive antennas in a closed-loop transmit-diversity channel. The receiver provides for repeated use of symbol-estimate weighting, subtractive cancellation with a stabilizing step-size, and mixed-decision symbol estimation. Receivers may be designed, adapted, and implemented explicitly in software or programmed hardware, or implicitly in standard Rake-based hardware, either within a Rake receiver at the finger level or outside the Rake at the user or subchannel symbol level. The receiver may be employed in user equipment on the forward link or in a base station on the reverse link.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.