Multiple-Input-Multiple-Output (Mimo) - Proxim Tsunami MP-8100 Series Installation And Management Manual

Overview
Figure 1-1 Wireless Network Topology (Point-to-Multipoint-Link)
A maximum of 250 SUs can be connected to a single BSU. Here, the BSU is equipped with either an omni-directional or a
wide angle antenna, whereas the SUs are equipped with a directional antenna.

1.3 Multiple-Input-Multiple-Output (MIMO)

Multiple-Input-Multiple-Output (MIMO) is a smart antenna technology that offers tremendous performance gains for wireless
devices at relatively low cost. The underlying technology of the MP-8100 radios are based on a combination of MIMO and
OFDM. High performance OFDM-MIMO radio combination enhances robustness using multiple transmitters and receivers,
allowing the MP-8100 units to completely take advantage of this antenna technology. In real-world environments, signals
reflect from various objects to reach the receiving antenna, hence a signal follows different distances before being received.
This phenomenon is called Multipath Propagation and causes interference and fading. On the receiver side, having multiple
receivers increases the amount of received power and also reduces multipath problems by combining the received signals for
each frequency component separately. Hence, MIMO significantly improves the overall gain.
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Tsunami MP-8100 Installation and Management Guide