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In this paper, 3D imaging of forward-looking Ground Penetrating Radar (GPR) data acquired by rotating antennas have been done. The data acquisition procedure mimics data collection of the Tunnel Boring Machine (TBM). Real GPR data for a Karst scenario were analyzed, preprocessed and finally imaged with back-projection method. Results show that objects buried in the subsurface of the ground can be...
A simple and effective simulation model for keyhole multiple-input multiple-output (MIMO) channels is introduced. The keyhole is modeled as a pair of transmitting and receiving antennas relaying multipath signals from the transmitter region to the receiver region. In the separated transmitter and receiver regions, the double-directional radio channel (DDRC) model is used to model the multipath scattering...
This paper derives a new expression of the correlation coefficient for two omni-directional antennas in terms of the easy-to-measure S-parameters. The omni-directional antennas can be monopole or dipole antennas and they are aimed for use in MIMO communication systems whose capacity performance is significantly affected by signal correlation. With this new expression, it can greatly reduce the computational...
In this correspondence, the effect of mutual coupling and transmit correlation on the sum-rate capacity of a multiuser system is investigated for the case of the two-user MISO broadcast channel. Mutual coupling between antenna elements of the antenna array and transmit correlation are taken into account via the coupling matrix and the correlation matrix, respectively. A closed form formula for the...
The MIMO capacity for a single cell multiple-input and six outputs multiuser MIMO system is investigated. The channel model consists of an antenna array at each mobile terminal, the Rayleigh fading channel from the user to the base station, and also an antenna array at base station. The channel state information (CSI) is assumed to be always known at the base station, thus successive decoding for...
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