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In this work, the autocorrelation and autocovariance functions of the channel state information (CSI) in a multi-cell mobile network with fast fading is derived analytically. The derivation is based on the Rayleigh fading model. A squared Bessel function is found to be a good approximation of the autocovariance. Simulations confirm both the analytical result and approximation to be accurate for short...
In recent years, the infrared camouflage characteristics of spray have been studied widely, but there is few researches on the relationship between the characteristics of water mist and the SNR of missiles. Aiming at this problem, on the basis of the comprehensive analysis of water mist against infrared imaging missile complex process, the simulation model is established. Computer simulation experiment...
In this work, dynamic downlink power control schemes based on user type identification are proposed for LTE (Long Term Evolution) femtocells. In the proposed schemes, the users are distinguished by their serving cells and service types, and the power control is performed accordingly. Moreover, with a variable setting of data rate offset, the proposed schemes can achieve superior performance in terms...
In this work, a downlink power control scheme based on channel quality indicator (CQI) is proposed for LTE femtocells. Unlike the conventional methods, this scheme takes the service types of users into account. Without making strong assumptions, such as full knowledge of the network or perfect coordination among basestations, a completely decentralized solution is provided. Simulation results confirm,...
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