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This paper investigates the performance enhancements using radio-frequency (RF) beamforming on closely spaced antennas in multiple-input multiple-output (MIMO) communication system. Of specific interest is the case of a array of extremely closely spaced antennas with complexity constraints, here implemented being restricted to a single RF chain. Our system model is developed in context of closely...
We present an interesting and powerful new framework connecting the achievable sum rate of multiple-input multiple-output (MIMO) wireless systems employing linear minimum mean-squared error (MMSE) receivers, and the ergodic MIMO mutual information. This allows the vast literature on ergodic MIMO mutual information to be directly applied to the analysis of MMSE receivers. As an example, the framework...
The non-coherent single-user multiple-input multiple-output (MIMO) channel in the low signal-to-noise ratio (SNR) regime is analyzed from the capacity point of view. We investigate the impact of channel and noise correlation on the mutual information for the on-off and Gaussian signaling schemes. The novelty is that we allow an arbitrary structure for both the channel and noise correlation matrices...
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