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In this paper the effects of channel estimation errors on spatial pre-coding schemes are analyzed. Under investigation is a novel pre-coding scheme with phase flipping, referred to as spatial phase coding (SPQ. The sensitivity of SPC to channel estimation errors in an OFDM system is compared to that of maximum ratio transmission (MRT), equal gain transmission (EGT) and transmit antenna selection diversity...
The performance of spatial pre-coding schemes depends on the amount of channel state information available at the transmitter. A novel approach is spatial pre-coding with phase flipping investigated in this paper. The scheme is referred to as spatial phase coding (SPQ). Two flipping criteria, the angle criterion (AC) and the absolute value criterion (AVC), are proposed which change the phase relation...
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