Achieving Maximum Capacity from a Fixed Region of Space
نویسندگان
چکیده
Previous results have shown channel capacity of multiple-antenna array communication systems linearly scales with the number of antennas. In reality, by increasing the number of antennas within a fixed region of space the antenna array become dense and spatial correlation (non-ideal antenna placement) significantly limits the capacity. In this paper, we derive a spatial precoder which eliminates the effects of nonideal antenna placement on the capacity performance of spatially constrained dense MIMO systems. The precoder is derived based on fixed and known parameters of MIMO channels, namely the antenna spacing and antenna placement which are known at the transmitter. Therefore, with this design, the precoder is fixed for fixed antenna placement and the transmitter does not require any feedback of channel state information (partial or full) from the receiver. Closed form solutions for the spatial precoder is derived and numerical results are presented to show the capacity improvements obtained for two types of spatially constrained antenna arrays.
منابع مشابه
Achieving Maximum Capacity From Spatially Constrained Dense MIMO Systems
In this paper, we derive a spatial precoding (power loading) scheme which eliminates the effects of non-ideal antenna placement on the capacity performance of spatially constrained dense MIMO systems. The precoder is derived based on fixed and known parameters of MIMO channels, namely the antenna spacing and antenna placement which are known at the transmitter. With this design, the precoder is...
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