Method and apparatus for interference cancellation by a user equipment using blind detection
US9723496B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2013 |
| Grant date | Aug 1, 2017 |
| Priority date | — |
| Expiry date | Sep 17, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/0058
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In order to cancel any interference due to the second signal (e.g., from a non-serving cell) from a signal received at a UE, without receiving additional control information, the UE blindly estimates parameters associated with decoding the second signal. This may include determining a metric based on sets of symbols associated with the signals in order to determine parameters for the second signal, e.g., the transmission mode, modulation format, and/or spatial scheme of the second signal. The parameters for the signal may be determined based on a comparison of the metric with a threshold. When a spatial scheme and a modulation format is unknown, the blind estimation may include determining a plurality of constellations of possible transmitted modulated symbols associated with a potential spatial scheme and modulation format combination. Interference cancellation can be performed using the constellations and a corresponding probability weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.