Abstract: A system for Digital Subscriber Line (DSL) data communications, and therefore the transceiver that contains the transmitter and the receiver implementing such system, based on Single Carrier Modulation (SCM). The invention includes an efficient vectoring structure that provides novel solution for crosstalk (505 and 506) elimination in SCM systems, which allows the cooperative operation at the transmitter (511) side as well as at the receiver (512) side. The present invention also includes a preamble insertion in a specific location of the transmission path, which makes possible the synchronization, direct channel response (503 and 504) estimation, crosstalk channel responses estimation and noise (507 and 508) estimation in agile manner, to make a continuous tracking of the changes of the channel (503 to 506) and the noise environment (505 to 508). It allows operation with low noise margin.

Abstract: An apparatus, program product and method are provided for use in automating the design of a custom DSP integrated circuit from a preexisting DSP core block and one or more additional circuit blocks interfaced with the DSP core block. An input display is displayed to a user, and is utilized to receive user input from the user for use in automatically building a custom DSP integrated circuit. The input display includes at least one selection input component for use in selecting at least one optional circuit block for inclusion in the custom DSP integrated circuit, and at least one configuration input component for use in customizing a customizable circuit block to be included in the custom DSP integrated circuit. The user input received from the user through the input display selects the optional circuit block and customizes the customizable circuit block.