Patent ID: 8755263

Claim:
A method of sending a signal through a transmission medium over a channel using a device comprising a transmitter; the transmitter comprising a pulse generator, a preamble generator block, a quadrature modulator and an upconverter operatively coupled to the preamble generator, and a composition block; the method comprising the steps of: receiving a pulse from the pulse generator at the preamble generator block; generating a preamble in response to the pulse with the preamble generator block by using at least one pair of complementary sequences or codes, with A 1 ,B 1 being one of the at least one pair and A 2 ,B 2 being the other of the at least one pair, with each of the at least one pair of sequences or codes being of length L, and wherein the sequence pairs A 1 ,B 1 and A 2 ,B 2 are mutually orthogonal; with the preamble generator block applying codes A 1 and A 2 to a phase signal I, and thereafter applying codes B 1 and B 2 to a phase signal Q; quadrature modulating and upconverting the phase signal I and thereafter the phase signal Q using the quadrature modulator and the upconverter; with the composition block generating a composed signal from the quadrature modulated and upconverted signals from the quadrature modulator and upconverter; and transmitting the composed signal to the transmission medium over the channel.