Interference erasure using soft decision weighting of the Viterbi decoder input in OFDM systems
US8019029B1 · kind B1 · utility
17Cited by
15References
20Claims
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Key dates
| Filing date | Apr 3, 2008 |
| Grant date | Sep 13, 2011 |
| Priority date | — |
| Expiry date | Jun 5, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03426
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Disclosed is a technique for mitigating the effect of an in-band interferer in Orthogonal Frequency Division Multiplexing (OFDM) wireless or wired networks that employ soft decision Viterbi decoder in the physical layer. The technique uses an independent estimation of the signal quality, which is passed to the Viterbi algorithm decoder so that it is able to discard the corrupted subcarriers. This improves the error correction capability of the Viterbi algorithm decoder in a receiver, which leads to fewer retransmissions and into higher information throughput.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.