Patent ID: 7664171
Filing Date: 2010-02-16
Classification: H04L

Abstract:
1. A method for uplink burst equalization in broad wide access system, in which an equalizer uses a decision feedback equalizer, comprising the following steps of: pre-training process including sending training sequence and training the equalizer before transmitting user data; channel tracking process including recording coefficient after convergence of the equalizer, starting transmitting the user data, and the equalizer tracking wireless channel for channel changes; if channel changes result in an error rate exceeding a first threshold but not exceeding a second threshold, entering into a burst equalization process; and entering into the pre-training process again if the channel changes result in an error rate exceeding the second threshold; wherein said first threshold is a critical point when the changing speed of the channel exceed the tracking speed of the equalizer; said second threshold is a threshold bit error rate corresponding to a receiver.