Abstract- We consider multiple antenna systems in which a large number of antennas occupy a given physical volume. In this regime the assumptions of the standard models of multiple antennas systems become questionable. We show that for such spatially dense multiple antenna systems one should expect

Abstract – Conventional multi-input multi-output (MIMO) models are not efficient to assess the benefits of multiple-antenna systems with area limitation on antenna arrays in realistic propagation environments. Physical models, though capturing these factors, are too complex for tractable analysis

Abstract — We consider the problem of digital communication in a Rayleigh flat fading environment using a multiple antenna system. We assume that the transmitter doesn’t know the channel coefficients, and that the receiver has only an estimate of them. We further assume that the transmitter

The performance of multiple antenna systems can be greatly improved by making the channel state information (CSI) available at the transmitter. In practice, therefore, a finite-rate feedback link is employed to convey a quantized version of the CSI to the transmitter. This semi-tutorial paper

Modeling multiple antenna systems in realistic environments- a composite channel approach

In this paper, we study a multiple antenna system where the transmitter is equipped with quantized information about instantaneous channel realizations. Assuming that the transmitter uses the quantized information for beamforming, we derive a universal lower bound on the outage probability for any

Abstract—We address the problem of providing the best possible service to new users joining a multicellular multiple antenna system without affecting existing users. Since, interferencewise, new users are invisible to existing users, the network is dubbed Phantom Net. I.

An information theoretic analysis of multiple antenna systems shows that the possible gain due to transmitter-sided channel knowledge is usually small for uncorrelated fading. However, it is not obvious how these results translate to real-world transmission strategies. Thus, in this paper the error

beit geholfen haben.

-exist in the same wireless channel. Multiple-antenna systems provide additional degrees of freedom to alleviate the requirements across these layers. As a modulation scheme in the physical layer, it improves the reliability against channel fluctuation by resolving the propagation paths and increases the data rate