NFL Requests STA to Test CBRS to Replace UHF Communications
Friday, May 11, 2018 | Comments

The NFL applied for a special temporary authority (STA) proposing the use of two 20-megahertz-wide channels at each NFL team’s stadium for proof-of-concept and interference testing of Part 96 Citizen’s Broadband Service (CBRS). The NFL plans to ultimately replace UHF-based communications systems, which enable coaches to communicate with other coaches and with players during televised NFL games, now in place in NFL stadiums.

Ultimately, when fully developed and tested, it is anticipated that this communications system would operate in the Part 96 CBRS either as a priority access or a general access use, the STA narrative said.

The system under development will, for the purpose of the STA, use two contiguous channels, 3.655 – 3.675 GHz and 3.675 – 3.695 GHz. The emission would be orthogonal frequency division multiplexing (OFDM) at 250 milliwatts (or less) effective radiated power per transmitter.

The NFL anticipates that each stadium will require 80 transmitters. All transmitters would be operated entirely within the NFL stadiums and therefore will have the benefit of a high degree of attenuation from the stadium structures. Interference testing will occur at each test venue.

“Should any authorized user of this spectrum suffer interference, all testing of the system will cease and not resume unless and until all such interference has been resolved to the reasonable satisfaction of the complainant(s),” the application said.

The full application is here.

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