Relative-signal-level data detection from a spread-spectrum signal using matched-filter obtained side information
US6359925B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 9, 1999 |
| Grant date | Mar 19, 2002 |
| Priority date | — |
| Expiry date | Mar 9, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0045
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An improvement to a spread-spectrum base station receiver having a matched filter. A symbol sampler samples at the symbol time TS, a plurality of symbol samples from the matched filter. A relative-signal-level decoder decodes the plurality of received-symbol samples, thereby generating a plurality of decoded-symbol samples. A noise sampler samples at a plurality of chip times kTC, but not at the symbol time TS, a plurality of noise samples from the matched filter, before, after, or a combination of before and after, a symbol sample. An estimator processes the plurality of noise samples. The erasure detector detects for each decoded-symbol sample from the plurality of decoded-symbol samples and from the plurality of noise samples, an erasure condition for the corresponding decoded-symbol sample, and thereby generates an erasure signal. An erasure decoder erasure decodes the input data using the erasure signals from the erasure detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.