MIMO Transmission schemes for LTE and HSPA Networks, 3G
MIMO Transmission schemes for LTE and HSPA Networks, 3G
MIMO Transmission schemes for LTE and HSPA Networks, 3G
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6.2.4. <strong>MIMO</strong> WITH ULA‐4VWith the ULA-4V antenna configuration, SDMA benefits are evident <strong>for</strong> macro-cellular deployments. TheDoppler-spread tolerance is also evident due to the long-term beam<strong>for</strong>ming. At the cell edge, ULA-4V helpswith increasing SNR with rank-one transmission as well as improved SIR statistics due to SDMA schedulingin the interfering base stations.3.0Downlink Average Sector Spectral Efficiency with 4-br Linear Array2.5bps/Hz2.01.51.00.50.0Rel-8 <strong>HSPA</strong>+1x2 3 km/hr(Baseline)Rel-8 <strong>HSPA</strong>+1x2 250 km/hr(Baseline)Rel-8 <strong>LTE</strong> 1x23 km/hr(Baseline)Rel-8 <strong>LTE</strong> 1x2250 km/hr(Baseline)Rel-8 <strong>HSPA</strong>+4x2 3 km/hrRel-8 <strong>HSPA</strong>+ Rel-8 <strong>LTE</strong> 4x2 Rel-8 <strong>LTE</strong> 4x24x2 250 km/hr 3 km/hr 250 km/hrFigure 31. <strong>LTE</strong> DL average sector SE with ULA-4V antenna configuration0.080Downlink Cell Edge Spectral Efficiency with 4-br Linear Array0.070bps/Hz0.0600.0500.0400.0300.0200.0100.000Rel-8 <strong>HSPA</strong>+1x2 3 km/hr(Baseline)Rel-8 <strong>HSPA</strong>+1x2 250 km/hr(Baseline)Rel-8 <strong>LTE</strong> 1x23 km/hr(Baseline)Rel-8 <strong>LTE</strong> 1x2250 km/hr(Baseline)Rel-8 <strong>HSPA</strong>+4x2 3 km/hrRel-8 <strong>HSPA</strong>+ Rel-8 <strong>LTE</strong> 4x2 Rel-8 <strong>LTE</strong> 4x24x2 250 km/hr 3 km/hr 250 km/hrFigure 32. <strong>LTE</strong> DL edge SE with DIV antenna configuration45
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