Apparatus and method for joint channel estimation
US5822380A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 12, 1996 |
| Grant date | Oct 13, 1998 |
| Priority date | — |
| Expiry date | Aug 12, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/0204
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An apparatus for estimating channel tap coefficients of a communication channel is provided which calculates channel tap coefficient estimates as a function of a received sample stream corresponding to the channel whose channel taps are being estimated and as a function of at least one other received sample stream corresponding to another receive channel. The apparatus receives digital sample streams from a plurality of receive channels and an impairment correlation matrix containing impairment correlation information among multiple receive channels. In one embodiment, the apparatus includes a precombiner which forms linear combinations of initial error samples from a first received sample stream and a second received sample stream to generate refined error samples for generating channel tap coefficient estimates. In one embodiment, an impairment correlation estimator receives the complex samples and the channel tap coefficients and generates an impairment correlation matrix for multiple receive channels. In one embodiment, a detector receives the complex samples, channel tap coefficients and the impairment correlation among multiple receive channels, and detects the transmitted in…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.