Narrative Statement for Question 7

0537-EX-PL-2016 Text Documents

Georgia Institute of Technology

2016-08-03ELS_180188

Narrative Statement for #7

A. The applicant seeks an experimental license to operate a test network to measure the effects of
the urban propagation environment on various types of modulation waveforms used for wireless
sensor networks. Test transmitters will be deployed within a radius of the campus of the Georgia
Institute of Technology at temporary fixed and portable locations. Receivers will be installed at
fixed locations in the same area. Software Defined Radio (SDR) transmitters (Ettus Research B-
200) will be used to generate test waveforms and then candidate waveforms will be programmed
into prototype sensor transmitters. Test waveforms will be based on FSK with various types of
spreading and forward error correct coding applied and will have occupied bandwidths between
100 Hz and 100 kHz. Data recorded by the receivers will be analyzed to evaluate the impact of
multipath, interference and other propagation impairments.

B. Objectives of these tests are to 1) select an optimum waveform based on measurements of BER
and power required; 2) evaluate the impact of the selected waveform on the range and battery
life of inexpensive wireless sensor transmitters.

C. This experimental program will contribute to the state of the art in wireless sensor networks by
developing techniques to reduce the cost and extend the battery life and range of wireless
sensors.

Document Created: 2016-08-03 13:25:24
Document Modified: 2016-08-03 13:25:24

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