Telecommunications – Transmitter – Diversity
Reexamination Certificate
2000-04-07
2008-07-22
Mehrpour, Melody (Department: 2617)
Telecommunications
Transmitter
Diversity
C455S067110
Reexamination Certificate
active
07403748
ABSTRACT:
The present invention relates to a method and system for transmitting a transmission signal from an antenna array (19) to a receiving means (20) of a wireless communication system, wherein a signal quality measurement is performed at the receiving means (20) for predetermined antennas or beams of said antenna array (19). Based on a feedback information derived from the signal quality measurement, at least two of the predetermined antennas or beams of the antenna array (19) are selected. The selected antennas or beams are used for transmitting said transmission signal according to a transmit diversity or beamforming scheme. Thus, spectral efficiency and diversity gain can be enhanced by using only selected ones of the predetermined antennas or beams.
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“Universal Mobile Telecommunications System (UTMS); Physical channels and mapping of transport onto physical channels (FDD) (3G tS 25.211 version 3.1.1 Release 1999)” ETSI TS 125 211 V3.1.1 (Jan. 2000), XP002151815, p. 15, line 4-p. 22, line 12.
Katz Marcos
Keskitalo Ilkka
Ylitalo Juha
Harrington & Smith PC
Mehrpour Melody
Nokia Coporation
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