Patent ID: 6650658
Filing Date: 2003-11-18
Classification: H04L,H04M

Abstract:
A system for communicating capabilities between a first telecommunication unit and a second telecommunication unit, the system comprising:a transmitter in the first telecommunication unit that generates a first tone set for signaling the second telecommunication unit, the first tone set including a set of tones that alias onto a first base tone when sub-sampled; the first tone set defined as: Cds=(32Ã—m)Â±n, for m=1,3,5, . . . , (N/32)and 0<12 where N=the number of downstream carrier tones supported at the first telecommunication unit, and N is an integer power of 2 greater than 32; anda receiver in the second telecommunication unit that samples the first tone set transmitted by the first telecommunication unit, the receiver sampling the first tone set at a rate below the Nyquist sampling frequency of the lowest frequency tone in the first tone set that is above the frequency of the first base tone; wherein sampling the first tone set causes tones in the first tone set that are above the first base tone to alias onto the base tone.