Frequently asked questions
Which modulation does the primary user use?
The primary user uses an OFDM physical layer.
Which frequency will be used?
A 10 MHz band in the 2.4GHz ISM band will be used. This 10MHz band will be divided into four 2.5MHz channels.
Which time- and frequency slots does the primary user occupy?
The primary user can occupy 5 or 10 MHz within the defined 10 MHz frequency band. The PU can also hop from channel to channel. The timeslots of the PU are chosen during the challenge and need to be estimated by the contestants.
Which time- and frequency slots can the secondary user use?
The secondary user is free to use all available spectrum (10MHz) and during all timeslots. However, interference to the primary user will be penalized.