Hybrid automatic repeat request combining method in orthogonal frequency division multiplexing system
US7652977B2 · kind B2 · utility
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12Claims
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Key dates
| Filing date | Jul 7, 2004 |
| Grant date | Jan 26, 2010 |
| Priority date | — |
| Expiry date | Jun 5, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2647
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention provides a HARQ (Hybrid Automatic Repeat Request) combining method in an OFDM (Orthogonal Frequency Division Multiplexing) system, which adopts improved Chase combining method weighted by SNR and variance of SNR to realize HARQ combining. The method can improve system performance in processing power and time delay, particularly in low SNR environment, and will not make the system more complex.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.