Patent ID: 6804307
Filing Date: 2004-10-12
Classification: H04L

Abstract:
A method for transmitting a signal in a transmit diversity wireless communication system using 4 antennae, and a complex, multilevel orthogonal space-time code of dimension 4Ã—n wherein n is an integer the method comprising the steps of:configuring a first row of a multilevel orthogonal 4Ã—n matrix Gn(ML) as an arbitrary cyclic version of a Generalized Chirp-Like (GCL) sequence of length n; configuring a second row of the multilevel orthogonal 4Ã—n matrix Gn(ML) ask a complex-conjugated version of the first row having inverted signs of the first n/2 or the last n/2 out of n consecutive symbols in the first row; configuring a third row as a reverted version of the first row; and configuring a fourth row as a complex-conjugated version of the third row having inverted signs of the first n/2 or the last n/2 out of n consecutive symbols in the third row.