Equalization circuit for unknown QAM constellation size
US6108375A · kind A · utility
7Cited by
2References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1997 |
| Grant date | Aug 22, 2000 |
| Priority date | — |
| Expiry date | Dec 18, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2027/0053
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a digital receiver, an equalizing unit includes a power controller adapted to scale received components of a quadrature amplitude modulated signal based on a constellation size of the quadrature amplitude modulated signal. Alternatively, a method of scaling components of a quadrature amplitude modulated signal includes the steps of searching the quadrature amplitude modulated signal to determine a constellation size, and scaling the components of the quadrature amplitude modulated signal based on the constellation size.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.