Adaptive equalizer which is independent of the amplitude of...

H - Electricity – 04 – L

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H04L 25/03 (2006.01) H03H 7/30 (2006.01) H03H 21/00 (2006.01) H04B 3/04 (2006.01) H04L 25/00 (2006.01) H04L 27/08 (2006.01)

Patent

CA 2460988

Adaptive equalizers are provided that compensate for transmission losses in an input signal, when the transmit signal amplitude is unknown. Several embodiments are provided, including a first embodiment having an equalizer core, a controllable-swing slicer and an amplitude control loop, a second embodiment having an equalizer core, a fixed-swing slicer and a control loop, a third embodiment having an equalizer core, a variable gain amplifier, and a variable gain amplifier control loop, and a fourth embodiment having an equalizer core, a fixed-swing slicer, a variable gain amplifier, and a variable gain amplifier control loop.

L'invention concerne des égaliseurs adaptifs indépendants de l'amplitude d'émission qui compensent les pertes de transmission d'un signal d'entrée lorsque l'amplitude du signal d'émission est inconnue. L'invention comprend plusieurs modes de réalisation, notamment un premier mode de réalisation comprenant un noyau d'égaliseur, un limiteur à excursion réglable et une boucle de commande d'amplitude, un second mode de réalisation comprenant un noyau d'égaliseur, un limiteur à excursion fixe et une boucle de commande, un troisième mode de réalisation comprenant un noyau d'égaliseur, un amplificateur à gain variable et une boucle de commande d'amplificateur à gain variable et un quatrième mode de réalisation comprenant un noyau d'égaliseur, un limiteur à excursion fixe, un amplificateur à gain variable et une boucle de commande d'amplificateur à gain variable.

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