Circuit for multi-path interference mitigation in an optical communication system
US11258518B2 · kind B2 · utility
2Cited by
3References
20Claims
0Family size
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Key dates
| Filing date | Nov 18, 2020 |
| Grant date | Feb 22, 2022 |
| Priority date | — |
| Expiry date | Nov 18, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/6971
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A circuit and method for mitigating multi-path interference in direct detection optical systems is provided. Samples of an optical signal having a pulse amplitude modulated (PAM) E-field are processed by generating a PAM level for each sample. For each sample, the sample is subtracted from the respective PAM level to generate a corresponding error sample. The error samples are lowpass filtered to produce estimates of multi-path interference (MPI). For each sample, one of the estimates of MPI is combined with the sample to produce an interference-mitigated sample.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.