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Method and circuit for controlling setup of multichannel system

  • US 6,222,888 B1
  • Filed: 02/22/2000
  • Issued: 04/24/2001
  • Est. Priority Date: 12/16/1997
  • Status: Expired due to Term
First Claim
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1. A circuit for use in a high speed multi-channel transmission system, which system is intended to transmit data at a rate R using K sub-channels through a channel having varying transmission characteristics, said circuit comprising:

  • a sub-channel parameter memory for storing data capacities associated with some or all of said sub-channels, including initial data capacities and adapted data capacities; and

    a processing unit which can perform a configuration procedure to generate said initial data capacities to configure said system to operate at the data rate R; and

    said processing unit being further configured to repeat said configuration procedure later during a data transmission to generate said adapted data capacities when significant changes are required in the data rate R based on an evaluation of one or more of the following parameters;

    (a) signal-to-noise ratio for the K sub-channels;

    (b) variations in said transmission characteristics;

    (c) variations in said data rate; and

    (d) a specified allowable system adaptation time period; and

    wherein the processing unit executes the configuration procedure until said data rate is achieved or until a specified iteration criteria parameter is satisfied and thereafter repeatedly executes said configuration procedure as needed to maintain the data rate R.

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