Block decision feedback equalizer
US5790598A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 1996 |
| Grant date | Aug 4, 1998 |
| Priority date | — |
| Expiry date | Mar 1, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03796
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A block decision feedback equalizer uses a Cholesky algorithm to factor a channel impulse response correlation matrix in order to solve for data received over a dispersive communications channel. While the Cholesky algorithm increases the computational complexity of the initial data symbol estimate (the result of a linear block estimation), its use allows the employment of a recursive update for computing successive data symbols with little additional computation. Further, the Cholesky algorithm is free of limitations that would restrict detection to cases where the channel span or memory is smaller than the probe segment following the data block to be detected. Additional functions such as diversity combining, incorporation of a time-varying channel response model and fractional baud-period sampling are provided in the block detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.