Adaptive equalizer operating at a sampling rate asynchronous...

Details Adaptive equalizer operating at a sampling rate asynchronous... Adaptive equalizer operating at a sampling rate asynchronous...

2007-07-24

2007-07-24

Ghayour, Mohammed (Department: 2611)

Pulse or digital communications

Equalizers

Automatic

C375S340000, C375S355000

Reexamination Certificate

active

10495941

ABSTRACT:
The invention relates to an LMS-based asynchronous receiver for digital transmission and recording systems. The receiver comprises a digital adaptive equalizer (EQ) for receiving a received sequence rn and for delivering an equalized sequence yn. The equalizer (EQ) operates at the sampling rate 1/Ts, asynchronous to the data rate 1/T. An equalizer adaptation method using LMS techniques is described for adapting equalizer taps asynchronously to the data rate via a control loop. A first sampling rate converter (SRC1) performs timing recovery at the data rate 1/T after equalization on the equalized sequence yn. A second sampling rate converter (SRC2) is provided for converting a delayed version of the received sequence rn into an intermediate control sequence ik at the data rate 1/T.

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