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Figure 2-2: WiN5200 Block Diagram
2.4
Features
2.4.1
Mobile WiMAX Wave 2 MIMO Features
Multiple-Input, Multiple-Output (MIMO) describes systems that use more than one radio and
antenna system at each end of the wireless link. In the past it was too costly to incorporate
multiple antennas and radios in a subscriber terminal. Recent advances in radio
miniaturization and integration technology now makes it feasible and cost effective.
Combining two or more received signals has the immediate benefit of improving received
signal strength, but MIMO also enables transmission of parallel data streams or greater
throughput. For example, in a 2 x 2 MIMO (two transmit and two receive elements), dual
polarization point-to-point system, the carrier's alloc ated frequency can be used twice,
effectively doubling the throughput data rate.
In point-to-multipoint systems employing MIMO, each base station antenna transmits a
different data stream and each subscriber terminal receives various components of the
transmitted signals with each of its subscriber antennas as illustrated in the figure below. By
WiN5200
Base-Band
Antenna
Product Description | 15
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