Patent ID: 8064501

Claim:
A method for generating a periodic training signal comprising cyclically expanded training symbols for a transceiver which transmits data via a data transmission channel using a predetermined number N of modulated carrier signals of a multicarrier data transmission, comprising: (a) initializing an initial address pointer to a predetermined value, wherein the initial address pointer comprises an address in a memory; (b) starting from the address, reading cyclically from the memory 2*N stored samples to generate a first transformed training symbol; (c) calculating a subsequent address pointer using the initial address pointer and one or more cyclic expansion parameters, thereby defining a calculated address pointer; (d) starting from an address associated with the subsequent address pointer, reading cyclically from the memory 2*N stored samples to generate a subsequent transformed training symbol; (e) calculating a next calculated address pointer using an immediately previous calculated address pointer and one or more cyclic expansion parameters; (f) starting from an address associated with the next calculated address pointer, reading cyclically from the memory 2*N stored samples to generate the next transformed training symbol; and (g) repeating acts (e) and (f) until a predetermined number of transformed training symbols are generated.