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:
Jul. 13, 2004
Filed:
Feb. 22, 2000
Yann Farmine, Fonteray aux Roses, FR;
Oscar Clop, Fonteray aux Roses, FR;
Nicholas Whinnett, Paris, FR;
Motorola, Inc., Schaumburg, IL (US);
Abstract
A base station ( ) in a radio communication system is provided with an antenna array for communication with a plurality of mobile stations ( ). The transmissions of the base station ( ) are optimised by adjusting the phase between the signals transmitted by each antenna ( ) so that the product of the propagation channel estimates is maximised. The invention has particular application to CDMA-TDD modes of operation where it has been shown to perform favourably in comparison with known transmit diversity techniques. A further advantage is that it does not require added complexity in the channel estimation at each mobile station ( ).