公开(公告)号：AU2009201306B2

公开(公告)日：2011-09-22

申请号：AU2009201306

申请日：2009-04-03

Applicant: INTERDIGITAL TECH CORP

Inventor： LIND OLESEN ROBERT ,  PASAD KALPENDU R ,  CHANG-SOO KOO ,  OZLUTURK FATIH M ,  JAEYOUNG KWAK ,  ELDAD ZEIRA ,  YUEJIN HUANG

IPC: H04J99/00 ,  H04K1/10 ,  H04L27/08

Abstract: 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 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 preformed on the data streams for each of the paired subcarriers. Then, eigen-beamforming is performed based on the CSI to distribute eigenbemas 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 the subcarriers or subcarrier groups for weak eigenmodes. C) Lu C:> Z C) Lu CD ui Lu co 00 co COMBINED co co CD C-U uj ZM m m in C9 u- C c') C, => co C-*) ZD Lu Lu I= m I Ar + -CcC co zi iE :;L i E3 C-) uj Lu 2 co CD iDui g C=) cm cn L -. J co F17 UNIT FFF UNIT c\j IFFT UNIT IFFT UNIT C\j C= Lu E5 C\i c\j Lu 2 ui 2