Receiver-side noise statistics and log likelihood ratio scaling for pre-equalization-based communication schemes
US12237952B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2023 |
| Grant date | Feb 25, 2025 |
| Priority date | — |
| Expiry date | Aug 25, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/067
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods, systems, and devices for wireless communications are described. The described techniques provide for a user equipment (UE) to perform receiver-side noise statistics (Rnn) estimation and for an extended reality (XR) device to perform log likelihood ratio (LLR) scaling estimation. For example, the UE may transmit a first set of reference signals to the XR device. The XR device may sample the reference signals and transmit an indication of quantized samples such that the UE may perform Rnn estimations and generate a pre-equalization matrix. The UE may transmit a set of pre-equalized reference signals to the XR device such that the XR device may estimate LLR scaling coefficients. In some examples, the UE may determine the pre-equalization matrix by performing a filtering of reference signal measurements. The UE may apply whitening to account for momentary interference, and may indicate a whitening matrix to the XR device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.