Transmission channel characteristic equalizer
US5303263A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 1992 |
| Grant date | Apr 12, 1994 |
| Priority date | — |
| Expiry date | Jun 24, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/025
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An equalizer including a channel estimator allowing a Viterbi algorithm processor to estimate transmitted symbols accurately, so that the impulse response of a transmission channel may not deviate from the correct one. The equalizer outputs an transmitted symbol sequence estimate having the largest path metric by correcting the channel impulse response by parameter coefficients of the LMS (Least Mean Square) or RLS (Recursive Least Square) algorithm, by compensating for phase fluctuations due to the frequency offset and phase jitter of received signals, or by using a sequence included in an intermediate portion of a TDMA (Time Division Multiple Access) frame format.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.