Patent ID: 6788749
Filing Date: 2004-09-07
Classification: H04L

Abstract:
A receiver, comprising:a variable gain amplifier having an input terminal, an output terminal, and a control terminal; an adaptive equalizer having an input terminal, an output terminal, and a control terminal, the adaptive equalizer input terminal coupled to the variable amplifier output terminal; a sampler having an input terminal, an output terminal, and a control terminal, the sampler input terminal coupled to the adaptive equalizer output terminal; a data detector having an input terminal, an error output terminal, a decision output terminal, and an erasure output terminal, the data detector input terminal coupled to the sampler output terminal; a control signal generator coupled to the data detector error output terminal, the data detector decision output terminal, and the data detector erasure output terminal; a first integrator coupled to receive signals from the control signal generator, and further coupled to provide signals to the variable gain amplifier; a second integrator coupled to receive signals from the control signal generator, and further coupled to provide signals to the adaptive equalizer; a loop filter having an input terminal and an output terminal, the loop filter input terminal coupled to receive signals from the control signal generator; and a voltage controlled oscillator (VCO) coupled to receive signals from the loop filter and further coupled to provide signals to the sampler; wherein the first integrator and the variable gain amplifier form part of a first control loop, the second integrator and the adaptive equalizer form part of a second control loop, the loop filter and the VCO form part of third control loop; and wherein the control signal generator, responsive to a signal received from the data detector erasure output terminal, maintains the control signals to the first, second, and third control loops, in a constant state.