Fast initialization using seamless rate adaptation

Abstract

A method for initializing modems in a multicarrier transmission system to establish a communication link between the transmitter and the receiver. An exemplary embodiment includes the steps of providing a predetermined parameter value that approximates a corresponding actual parameter value of the communication link, establishing a data communication link between a first transceiver and a second transceiver using the predetermined parameter value to allow the transmission of data, determining the actual parameter value, and seamlessly increasing the data rate of the established data communication link by using the determined actual parameter value to provide an steady state communication link with an updated data rate.

1 . A method to establish a communication link between the transceivers comprising: 
 providing at least one predetermined parameter value, having an associated first data rate, that approximates at least one corresponding actual parameter value of the communication link;    establishing a data communication link between the transceivers using the at least one predetermined parameter value as an approximation of the at least one actual parameter value of the communication link to allow transmission of data between the transceivers at the first data rate;    determining the actual parameter value, associated with a second data rate, corresponding to the at least one predetermined parameter value after establishing the data communication link using the predetermined parameter value; and    seamlessly adapting the first data rate of the established communication link to the second data rate.    
     
     
         2 . A system for establishing a communication link comprising: 
 means for providing at least one predetermined parameter value, having an associated first data rate, that approximates at least one corresponding actual parameter value of the communication link;    means for establishing a data communication link between the transceivers using the at least one predetermined parameter value as an approximation of the at least one actual parameter value of the communication link to allow transmission of data between the transceivers at the first data rate;    means for determining the actual parameter value, associated with a second data rate, corresponding to the at least one predetermined parameter value after establishing the data communication link using the predetermined parameter value; and    means for seamlessly transitioning from the first data rate of the established communication link to the second data rate.