The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 12, 2004
Filed:
Jan. 27, 2000
Branislav Popović, Solna, SE;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
Transmitting a signal in a transmit diversity wireless communication system using 4 antennae, using a complex, multilevel orthogonal space-time code of dimension 4×n, and length p=n. In an exemplary embodiment the method includes the steps of: configuring a first row of a multilevel orthogonal 4×n matrix G as an arbitrary cyclic version of a Generalized Chirp-Like (GCL) sequence of length n; configuring a second row of a multilevel orthogonal 4×n matrix G as the 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 a first n/2 or a last n/2 out of n consecutive symbols in the third row.