Communication channel and frequency offset estimator
US6393068B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 22, 1998 |
| Grant date | May 21, 2002 |
| Priority date | — |
| Expiry date | Sep 22, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2027/0065
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Estimates of both the communication channel impulse response coefficients and a received signal carrier frequency offset are generated simultaneously without either estimation interfering with or hampering of the other estimation. This is realized in an embodiment of the invention by utilizing both received symbols known to the receiver during a training sequence and a received signal to generate simultaneously an estimate of the impulse response coefficients of the communication channel and an estimate of the received signal carrier frequency offset. In one embodiment of the invention a first estimator and a second estimator are employed to generate the communication channel impulse response coefficients and the received signal carrier frequency offset, respectively. Specifically, in the first estimator, (a) data symbols in the training sequence, (b) the magnitude of the received signal, (c) the magnitude of an estimate for the received signal and (d) a step size based on a learning coefficient are employed in a first prescribed relationship to generate the communication channel impulse response coefficients. Simultaneously, in the second estimator, a second prescribed relationshi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.