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In this work, we present SDR-ARI - a software defined radio (SDR) approach to an angle-of-arrival-assisted relative interferometric (ARI) RADAR transceiver. It has a number of desirable attributes including the ability to reduce the synchronization, network, and hardware requirements when operating as the sole RADAR modality and its ability to augment existing pulsed and CW RADAR algorithms. While,...
Hybrid MIMO communication systems combine spatial multiplexing with diversity gain to achieve both high spectral efficiency and link reliability. We present a novel hybrid scheme that allows the use of any number of spatial multiplexing layers, plus one quasi-orthogonal layer (ABBA) of either 3 or 4 antennas. We transform the system equations in terms of linear dispersion codes, from which we derive...
Hybrid MIMO communication systems combine spatial multiplexing with diversity gain to achieve both high spectral efficiency and link reliability. We present a novel generalized hybrid scheme that allows the use of any number of spatial multiplexing layers (V-BLAST) and any number of quasi-orthogonal layers (ABBA).We also present a low-complexity, ordered, successive interference cancellation receiver...
This paper describes the behavior of two popular thin-QR decomposition algorithms when implemented using fixed-point arithmetic. This behavior is studied in the context of a V-BLAST receiver, and the effects of the limited precision are evaluated in terms of their impact on the receiver's bit error rate. Our analysis of V-BLAST under these conditions shows a strong dependence on the numerical precision,...
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