Phase noise compensation for MIMO WLAN systems

Details Phase noise compensation for MIMO WLAN systems Phase noise compensation for MIMO WLAN systems

2005-05-19

2009-10-27

Liu, Shuwang (Department: 2611)

Pulse or digital communications

Receivers

Interference or noise reduction

C375S260000, C455S296000, C455S063100

Reexamination Certificate

active

07609789

ABSTRACT:
The present invention provides a method for reducing phase noise in OFDM systems by analyzing a time-dependent representation of the phase noise that changes in real time according to received data. The analysis of real time signals is based on processing statistical properties of phase noise and received data. The statistical properties of phase noise are represented by a covariance matrix Rψψ. The basis of the multiplicative phase noise decomposition which represents the varying in time phase noise component, is selected from the eigenvectors of Rψψ. The present invention suggests replacing the fixed representation of the phase noise as suggested by prior art with a system and time-dependent representation that changes in real time according to received data.The method according to the present invention is implemented within An OFDM transceiver.

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