antenna selection for high SNR and large number of transmit antennas. We define the capacity gain as the constant term in the asymptotic expansion of the ergodic capacity with respect to the SNR. We show that this value is directly related to the channel state information (CSI) at the transmitter. We

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Abstract—The downlink capacity of cellular networks is known to be strongly limited by inter-cell interference. In order to mitigate this interference, a number of frequency reuse schemes have recently been proposed. In this paper, we compare the potential capacity gains of these schemes accounting

We provide an overview of the extensive recent results on the Shannon capacity of single-user and multiuser multiple-input multiple-output (MIMO) channels. Although enormous capacity gains have been predicted for such channels, these predictions are based on somewhat unrealistic assumptions about

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

Abstract—In this paper, we evaluate the capacity gains offered by MIMO systems relative to SISO by using two metrics: the ratio between the expected value of the two capacities and a weighted difference between the two capacities. We present results for these metrics for the case of a general

We obtain the Shannon capacity of a fading channel with channel side information at the transmitter and receiver, and at the receiver alone. The optimal power adaptation in the former case is "water-pouring" in time, analogous to water-pouring in frequency for time-invariant frequency

Abstract — Capacity gain from transmitter and receiver cooperation are compared in a relay network where the cooperating nodes are close together. When all nodes have equal average transmit power along with full channel state information (CSI), it is proved that transmitter cooperation outperforms

In this paper we analyse typical indoor propagation scenarios with respect to the capacity gain made available through use of multiple transmit and receive antennas. In particular, we investigate propagation channels with strong Hne of sight component, as evident when the transmit array

. In the wake of his sudden death, medical professionals and public followers were confused, and in some cases, dumbfounded. It can be argued that Fixx had beaten the odds by quitting smoking, losing weight, and becoming fit, thereby gaining years of life over what his genetic background foretold. Still, how