Digital imbalance correction method and device in a receiver for multi-carrier applications
US7376170B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 30, 2003 |
| Grant date | May 20, 2008 |
| Priority date | — |
| Expiry date | Jun 18, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/26524
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A digital imbalance correction device and method are provided including an input unit to receive first input signals. A time-to-frequency-domain-transformer performs a transformation of the first input signals from time-domain into frequency-domain. A subtractor receives second input signals and outputs a gain difference as a function of frequency at its output. A cross-correlator receives third input signals based on the input signals, and outputs a cross-correlation of the third input signals. A gain corrector receives a fourth input signal based the associated first input signal. A gain of the fourth input signal is corrected based on the power difference spectrum. A phase corrector receives a fifth input signal based the associated first input signal. A phase of the fifth input signal is corrected based on the cross-correlation output, such that the phase of the fifth input signal is in quadrature relation to the other one of the first input signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.