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    High-speed Pulse Shaping Filter Systems And Methods

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    8473535.pdf (817.2Kb)
    Date
    6/25/2013
    Author
    Perumana, Bevin George
    Rachamadugu, Arun
    Pinel, Stephane
    Laskar, Joy
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    Abstract
    A first system and method relates to an analog current-mode method using branch systems. In the analog current-mode implementation, multiple branches systems can be scaled according to filter coefficients and switched using known data points. Positive coefficients can add current to the summing node, while negative coefficients can remove current from the summing node. Switches can be implemented with quick charge/discharge paths in order to operate at very high data rates. A second system and method relates to a digital look-up table based high-speed implementation. In the digital implementation, outputs can be pre-calculated as an n-bit output word that drives an n-bit DAC. Each bit of the n-bit word can then described as an independent function of the known data points. Each such function can be implemented as a high-speed combinational logic block. Both systems and methods enable the implementation of pulse shaping filters for multi-gigabit per second data transmission.
    URI
    http://hdl.handle.net/1853/56772
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