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Application filed by Interdigital Tech CorpfiledCriticalInterdigital Tech Corp
Publication of SG155207A1publicationCriticalpatent/SG155207A1/en
The present invention is related to a method and apparatus for implementing space frequency block coding (SFBC) in an orthogonal frequency division multiplexing (OFDM) wireless communication system. The present invention is applicable to both a closed loop mode and an open loop mode. In the closed loop mode, power loading and eigen-beamforming are performed based on channel state information (CSI). A channel coded data stream is multiplexed into two or more data streams. Power loading is performed based on the CSI on each of the multiplexed data streams. SFBC encoding is performed on the data streams for each of the paired subcarriers. Then, eigen-beamforming is performed based on the CSI to distribute eigenbeams to multiple transmit antennas. The power loading may be performed on two or more SFBC encoding blocks or on each eigenmodes. Additionally, the power loading may be performed across subcarriers or subcarrier groups for weak eigenmodes.
SG200905357-0A2004-08-122005-08-11Method and apparatus for implementing space frequency block coding
SG155207A1
(en)
Method and apparatus for data processing to transmit in a wireless system (embodiments), a transmitter in the wireless system and a wireless communication apparatus
Method, apparatus and system for the transmission and reception of unencrypted channel information in an orthogonal frequency division multiplexing system