Propagation Modeling
♦ Propagation modeling relies on a system-theoretic view on the input-output relationship from the transmit to the receive antenna. |
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♦ The channel can be equivalently described in either the time or the frequency domain. |
♦ Most generally, the channel is considered to be a linear time-variant system, which additionally depends on the locations of the TX and RX antennas. The antenna element characteristics (directional gain, polarization) is, however, commonly attributed to the channel itself. ( – very new approaches change this) |
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♦ A channel sounder is a device for measuring the channel by transmitting specific test signals. Channel sounder devices can be classified by their ability to measure different subsets of channel properties and their technical base parameters, like the radio bandwidth. |
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