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This work presents solutions to enhance the performance of urban cellular networks based on Multiple-Input Multiple-Output (MIMO) systems. First, some adjustments to the Base Stations (BSs) are proposed and evaluated, namely the reorientation of the antennas and two new placements of the BSs, while maintaining or even diminishing the number of required BSs. Afterwards, a cooperative wireless system...
This paper considers the use of a cooperative wireless communication system in order to enhance Multiple-Input Multiple-Output (MIMO) channel capacity. Within the cooperative system, a relay is selected by exploiting the MIMO spatial multiplexing feature in a simple and distributed approach, aiming at selecting the partner which yields the best MIMO capacity. The study is performed for a realistic...
In this paper the channel capacity of Multiple Input Multiple Output (MIMO) wireless systems within a Manhattan-like scenario is studied. Three Base Stations (BSs) placement models are proposed in this work, so as to enhance the channel capacity of the wireless system. The evaluation of the proposed BSs arrangements is performed using a simulator with realistic underlying models (test scenario, radio...
In this paper the spatial distribution of the channel capacity of Multiple Input Multiple Output (MIMO) wireless systems within a microcell scenario is studied. Based on the capacity location dependency, made clear by realistic simulation results, a segmentation of the cell area into high and low capacity regions is proposed. The Base Station (BS) and Mobile Stations (MSs) inter-antenna spacing impact...
In this paper we discuss the use of a simple wireless cooperative system based on Multiple-Input Multiple-Output (MIMO) spatial multiplexing, in order to enhance the channel capacity of single antenna and multiple antenna terminals in microcellular systems. The proposed cooperative system is envisioned for technology that is already available on the market, it can be implemented in a transparent manner...
The performance of multiple-input multiple-output systems using spatial multiplexing can be degraded when the spatial information channels are correlated. This work proposes a solution to this problem, which is based on a cooperative wireless communication system. Within the cooperative system, the relay is selected either randomly or using the smart selection scheme, a simple and distributed approach...
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