Impulse response shortening and symbol synchronization in...

Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train

Reexamination Certificate

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C375S350000, C375S360000, C375S232000, C370S509000, C370S511000, C370S514000

Reexamination Certificate

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07421029

ABSTRACT:
A method for receiving at a receiver having a variable filter a transmitted signal that includes a periodic training signal. The method includes (a) receiving and sampling the transmitted signal at the receiver to produce a digital complex baseband signal; (b) filtering the digital complex baseband signal with the variable filter; (c) detecting the periodic training signal in the filtered digital complex baseband signal; (d) determining a desired channel impulse response based on the detected periodic training signal; (e) calculating filter coefficients required by the variable filter to achieve the desired channel impulse response; and (f) adjusting the variable filter according to the calculated filter coefficients. A receiver for implementing the method is also provided.

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