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In practical multiple-input multiple-output (MIMO) systems, due to the close proximity among the antennas, the channels between different transmit and receive antennas are spatially correlated. Besides spatial correlation, closely placed antennas also experience mutual coupling among the antennas, which is due to the interaction of electro-magnetic fields at different antennas. In this paper, we present...
For multiple-input multiple-output (MIMO) antenna systems, if perfect channel state information (CSI) is available at the transmitter and receiver sides, advanced beamforming (ABF) can be applied at both sides so that the transmitted data streams can be decoupled easily, and adaptive modulation can be utilized to maximize the throughput. When the available CSI is imperfect, however, the data streams...
Orthogonal frequency division multiplexing (OFDM) has been adopted by many standards (e.g., IEEE 802.11a, IEEE 802.11g) because it offers high data-rates and low decoding complexity. Because of its high data-rate capability, OFDM is highly suitable for short range military applications. On the other hand, space-division multiplexing and multi-antenna transmissions over multi-input multi-output (MIMO)...
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