Patent ID: 6510229
Filing Date: 2003-01-21
Classification: G06F,H03M,H04B,H04H,H04J,H04K,H04L,H04M,H04N,H04W,Y02D

Abstract:
A multicarrier transmitting modem for a communications system, comprising:a port for receiving multiple serial strings of digital data; a scrambler for randomizing the strings of digital data, wherein the scrambler randomizes different ones of the multiple strings differently by varying the polynomials and seeds of the scrambler; a mapper for converting the randomized strings into randomized digital symbols representing the strings of digital data; an inverse discrete FFT transformer for converting the randomized symbols into digital representations of multiple modulated orthogonal carriers; means for converting the digital representations into an analog waveform; and an amplifier for transmitting the analog waveform to the communications system.