H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 27/22 (2006.01)
Patent
CA 2671999
The present invention balances the amplitude and phase of a received QPSK signal that may have been corrupted during transmission. The system determines the amplitude of the I and Q symbols of a received signal, compares them, and applies a correction to one or both channels to correct for amplitude imbalance. For phase imbalance, the system calculates the cross-correlation of the I and Q symbols which should average to zero. A correction factor is derived from the cross--correlation and applied to both channels, returning the phase cross-correlation to zero. The output from the system is a signal corrected in both amplitude and phase.
La présente invention vise à équilibrer l'amplitude et la phase d'un signal QPSK qui peut avoir été corrompu pendant la transmission. Le système détermine l'amplitude des symboles I et d'un signal reçu, les compare et applique une correction à une ou aux deux phases pour corriger le déséquilibre d'amplitude. En ce qui concerne le déséquilibre de phase, le système calcule la corrélation des symboles I et Q qui devrait être en moyenne zéro. Un facteur de correction est tiré de la corrélation croisée et appliqué aux deux phases, et la corrélation croisée des phases est remise à zéro. La sortie du système est un signal corrigé en amplitude et en phase.
Dick Stephen G.
Kazakevich Leonid
Ozluturk Fatih M.
Interdigital Technology Corporation
Ridout & Maybee Llp
LandOfFree
Correction of amplitude and phase imbalance in psk receivers does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Correction of amplitude and phase imbalance in psk receivers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Correction of amplitude and phase imbalance in psk receivers will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1996258