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Defining a Channel Sounding Measurement System for Characterization of 5G Air Interfaces

Application Notes

With its aggressive performance goals, the emerging 5G standard will almost certainly incorporate a combination of millimeter-wave (mmWave) frequencies, ultra-broad bandwidths and massive multipleinput/multiple-output (MIMO) methods. Although each of these adds difficulty to the design of transmitters and receivers, the most significant unknowns are in the over-the-air radio channels between user equipment (UE) and base station (BS). To fully characterize the channel, it is necessary to create mathematical models of channel performance and use them to define new air interface standards for 5G.

 

The successful deployment of mmWave-based systems requires a solid understanding of channel conditions. Currently, attention is being focused on radio-wave propagation at a variety of possible carrier frequencies above today’s densely populated spectrum in the region below 6 GHz. Detailed characterization of channel propagation is vital for the development of a reliable 5G wireless system design. A technique called channel sounding is necessary step towards understanding the channel and, thereby, enable the data rates, spectrum flexibility and ultra-broad bandwidth envisioned for 5G.

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