Soft linear and non-linear interference cancellation
US8774261B2 · kind B2 · utility
4Cited by
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13Claims
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Key dates
| Filing date | Jun 11, 2012 |
| Grant date | Jul 8, 2014 |
| Priority date | — |
| Expiry date | Jul 6, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03012
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A two stage interference cancellation (IC) process includes a linear IC stage that suppresses co-channel interference (CCI) and adjacent channel interference (ACI). The linear IC stage disambiguates otherwise super-trellis data for non-linear cancellation. Soft linear IC processing is driven by a-posteriori probability (Apop) information. A second stage performs expectation maximization/Baum Welch (EM-BW) processing that reduces residual ISI left over from the first stage and also generates the Apop which drives the soft linear IC in an iterative manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.