Patent ID: 8295387
Filing Date: 2012-10-23
Classification: H04L

Abstract:
1. An encoding and decoding method that generates an encoding preamble with at least two pairs of orthogonal complementary sequences in order to minimize distortion of a signal transmitted through a medium, the method comprising the steps of: generating a first orthogonally complementary sequence pair A applying the first orthogonally complementary sequence A applying the second orthogonally complementary sequence B emitting a resulting signal by means of quadrature modulation through a transmission medium over a channel and calculating filter coefficients by the equations: wherein * is a correlation operator, I is an in phase portion of a resulting signal that is received after transmission, Q is a quadrature phase portion of a resulting signal that is received after transmission, N I is received noise in the in phase portion I, and N Q is received noise in the quadrature phase portion Q, and wherein use of the filter coefficients with appropriate filters allows distortion associated with the transmission medium to be identified, minimized, and/or eliminated.