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Using techniques such as spatial division multiplexing (SDM), transmit beamforming, and space-time block coding (STBC), MIMO systems like IEEE 802.11n are conceived to increase dramatically throughput or to improve the reception range. Nevertheless, MIMO equipment in an indoor environment shows that the power level received in non-noisy conditions is not sufficient to explain the throughput variations...
It has been proved that in an uncorrelated condition, the capacity of MIMO system will linearly increase with the minimum number of transmitter and receiver antennas. However, the practical capacity of Multiple-Antenna system may vary because of the existence of spatial-temporal correlation. Factors such as Antennas Spacing, Angular Spread, Power Angular Spectrum, Mean Angle-Of-Arrival, Multiple Clusters,...
In this paper, we propose a novel DOA estimation technique for broadband signals using a single UWB antenna inspired by the human auditory system. The received spectra of the UWB antenna are incident angle dependent in the x-y, x-z and y-z planes. The estimated DOA is then obtained by evaluating the correlation coefficients of the measured spectra with pre-determined incident angle dependent spectra...
In this paper we investigate the impact of fading correlation at the receiving elements of a compact antenna array in a relay assisted cooperative scheme in single-input multiple-output (SIMO) configuration with one or multiple relays operating in amplify-and-forward mode. We assume that the source and the relay terminals are each equipped with one antenna, while the destination terminal is equipped...
The paper reports on the performances of training-based channel estimation methods in a multiple input multiple output (MIMO) communication system with transmitter equipped with a uniform linear array (ULA) and receiver equipped with either uniform circular array (UCA) or uniform linear array (ULA). In the undertaken investigations, the receiver is assumed to be free from any obstacles while the transmitter...
In this paper, a new wideband multiple-input multiple-output (MIMO) fading channel model for vehicle-to-vehicle (V2V) communications is proposed. The MIMO V2V channel model, called for brevity T-model, captures the propagation effects that occur if vehicles move towards a junction with a side road and corner buildings. The starting point for the derivation of the T-model is a new geometric T-junction...
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