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In this paper, we propose a robust pre-coder design method for Cognitive Radio Multi-Input Multi-Output (CR-MIMO) system under the consumption that the channel state information (CSI) estimations are imperfect from secondary base station (SBS) to primary user (PU) and secondary user (SU). Due to the uncertainties of the channel estimation error, both the outage probability of the received SNR of SU...
In [1] and [2], we have proposed a novel metric for evaluating the capacity to the total energy consumption ratio of Multiple Input Multiple Output (MIMO) systems. We have considered the context of Wireless Sensor Networks (WSNs) and we have evaluated the proposed metric over the distance between the transmitting and the receiving sides. We have identified the optimal MIMO system configuration for...
In this paper, the convergence-enhanced subspace channel estimation technique is investigated for MIMO-OFDM systems. The perturbation of noise subspace is inversely proportional to the number of OFDM symbols. Using the block circular property of the channel matrix, we propose the cyclic repetition method (CRM) to generate a group of equivalent signals for each OFDM symbol. The subspace channel estimation...
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