We investigate the use of multiple transmitting and/or receiving antennas for single user communications over the additive Gaussian channel with and without fading. We derive formulas for the capacities and error exponents of such channels, and describe computational procedures to evaluate

channel quality is near the peak. The diversity gain increases with the dynamic range of the fluctuations and is thus limited in environments with little scattering and/or slow fading. In such environments, we propose the use of multiple transmit antennas to induce large and fast channel fluctuations so

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Abstract — We propose a new classification of multiple antenna channels. The classification is performed in the space of Hermitian forms defined by the channel representation. We introduce a geodesic metric between Hermitian forms and we build a finite number of classes. The centroids

Abstract — The multiple antenna multicast channel is considered, in which the transmitter, equipped with an antenna array, sends a common message to multiple receivers, each of which are assumed to have only a single antenna. The information theoretic capacity of this channel is studied, along

Abstract−In multiple-antenna channels, the optimality of a transmission scheme hinges on a detailed characterization of the channel. In this paper, we will present measurement results from 2 to 8 GHz in both LOS and NLOS scenarios, at both office and residential environments. Data processing

Abstract-This paper studies the optimal transmission of layered multimedia sources, which require unequal target error rates in their bitstream, over open-loop multiple antenna systems. First, we analyze the behavior of the crossover point of the outage probability curves for vertical Bell Labs

In this paper we show that the problem of designing eficient multiple-antenna signal constellations for fading channels can be related to the problem of finding packings with large minimum distance in the complex Grassmannian space. We describe a numerical optimization procedure for finding good