Receivers based on closed-form parametric estimates of the probability density function for the received signal
US8488726B2 · kind B2 · utility
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Key dates
| Filing date | Aug 1, 2007 |
| Grant date | Jul 16, 2013 |
| Priority date | — |
| Expiry date | Apr 22, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/0202
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A closed-form parametric approach to channel-estimation is provided. In one aspect, a specific parametric expression is presented for the received signal pdf that accurately models the behavior of the received signal in IM/DD optical channels. The corresponding parametric channel-estimation approach simplifies the design of MLSE receivers. The general technique lends itself well to the estimation of the signal pdf in situations where there are multiple sources of noise with different distributions, such as ASE noise, together with Gaussian and quantization noise, and signal-dependent noise, for example.
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