US 7,586,979 B2
Method for transmitting signals using antenna diversity, for instance in mobile communication systems, transmitter, receiver and computer program product therefor
Alberto Serratore, Gravina di Catania (Italy); Giuseppe Avellone, Palermo (Italy); Francesco Rimi, Alcamo (Italy); Nicolo Ivan Piazzese, Acireale (Italy); and Agostino Galluzzo, Palma di Montechiaro (Italy)
Assigned to STMicroelectronics S.r.l., Agrate Brianza (Italy)
Filed on Oct. 02, 2008, as Appl. No. 12/244,521.
Application 12/244521 is a continuation of application No. 10/910955, filed on Aug. 03, 2004, granted, now 7,460,581.
Claims priority of application No. 03425535 (EP), filed on Aug. 05, 2003.
Prior Publication US 2009/0041090 A1, Feb. 12, 2009
This patent is subject to a terminal disclaimer.
Int. Cl. H04B 1/07 (2006.01)
U.S. Cl. 375—146  [375/148; 375/295; 375/299; 455/500] 23 Claims
OG exemplary drawing
 
1. A method for transmitting, via a first pair of antennas and at least one second pair of antennas, encoded digital symbols produced according to a modulation scheme, the method comprising:
organizing digital symbols in a set, said set of symbols including subsets of pairs of symbols that are used for transmission via said at least one second pair of antennas, said subsets being swapped temporally with respect to subsets of symbols that are used for transmission via said first pair of antennas;
using for transmission via said first pair of antennas a signal obtained by subjecting said organized digital symbols to spreading with a code-division-multiple-access code, then to space-time coding, then to scrambling with a scrambling code, and then to adding with respective pilot flows for channel estimation; and
using for transmission via said at least one second pair of antennas a signal obtained by subjecting said swapped temporally subsets of symbols to spreading with a code-division-multiple-access code, then to space-time coding, then to scrambling with a scrambling code, and then to adding with respective pilot flows for channel estimation,
wherein at least one between said code-division-multiple-access code and said scrambling code used for the transmission via said at least one second pair of antennas is different from the code-division-multiple-access code and said scrambling code used for the transmission via said first pair of antennas.