1. THESIMULATED MIMO-OFDMA SYSTEM
1.1. Q users (MS)
1.2. two transmit antennas
1.3. BS equipped with two receive antennas
1.4. Based on the estimated (SNR), the DCA is implemented byselecting the maximum SNR subcarriers and assignedthem to the corresponding users => the MIMO-OFDMA system's performance can be significantly improved
2. AN ANALYSIS OF THESPATIAL-TEMPORAL CORRELATIONPROPERTIES OF MIMO CHANNELSIMULATOR DEVELOPED BY THESCM AND THE ONERING CHANNELMODELING METHOD
2.1. The spatial-temporal correlationproperties of the MIMO channel obtained bythe SCM channel model method
2.1.1. The SCM method proposed by the 3GPP is basedon the link level parameters and the spatial parameters asthe AoA and AoD
2.1.2. The channel modeled by the SCM method con-sists of N paths
2.2. The spatial-temporal correlationproperties of the MIMO channel obtained bythe Extended Onering channel modelingmethod
2.2.1. The Onering MIMO channel models described are developed by using the GBSM method, whereas thescatters are arranged around the MS
3. A PERFORMANCE COMPARISONOF THE SCM METHOD TO THEOnering CHANNEL MODEL METHOD
3.1. Spatial-temporal correlation propertiesof the SCM and the Onering channelsimulators
3.1.1. If the BS antenna is perpendicular to the broadside ofMS-BS, then the spatial CCFs obtained by the two channelmodeling methods are similar, the differences are negligi-ble. In these cases, the SCM channel model can be re-placed by the Onering because of the reason of simplicity
3.1.2. In the other cases, SCM channel model should be se-lected for the MIMO frequency selective channelmodeling
3.1.3. Compared withthe Onering channel model method, the SCM channelmodel requires two additional parameters, namely, theAoA and the AoD
3.2. The frequency correlation functions ofMIMO channel obtained by the SCM and theOnering channel simulators
3.2.1. frequency correlation functions (FCF)