Crazy PA and software-defined-radio

Discussions and questions about the Crazyradio
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Maxzor
Beginner
Posts: 11
Joined: Sun Jan 17, 2016 11:01 am

Crazy PA and software-defined-radio

Post by Maxzor » Thu Jan 28, 2016 8:51 pm

HI crazyfliers!

I decided as an hobbyist to rewrite the UAV article on Wikipedia, to grasp a comprehensive scope about how the UAV sytems work. I am currently busy with the radiocommunication part, and would enjoy getting noob-level information.


Is the dongle an RF front-end? Which elements does compound it? How far is it from a Digital Signal Processor? What frequency range does it cover? What kind of modulation/demodulation is used (PWM, PPM, PCM, PSK,ASK,FSK, OFDMA, ...)?

I understood that the receiver supports Bluetooth LE and enhanced Shockburst. How far is the Crazyflie radio reveiver from supporting other 2.4GHz packet radios such as wireless mobile communication with Open System Interconnection (3G, LTE-A, other 4G), or even cognitive radio with Embedded Wirelesss Interconnection which would allow for automatic detection and demodulation of signals? As I saw GPS and Wifi extension boards how much is the receiver away from demodulating satellite/GNSS and Wifi waves itslef?

tobias
Bitcraze
Posts: 1716
Joined: Mon Jan 28, 2013 7:17 pm
Location: Sweden

Re: Crazy PA and software-defined-radio

Post by tobias » Fri Jan 29, 2016 8:24 am

Welcome to the forum Maxzor!

Most of the information you can find on the wiki or in the nRF51 datasheets but to speed it up a bit I'll answer the simple questions.

The nRF51 is not an SDR radio however the radio base band definitely use a lot of signal processing. It can cover 2.4 - 2.5 GHz and uses GFSK modulation.

As for 3G, LTE, GPS etc it won't be possible, with SDR technology it might be possible though.

Maxzor
Beginner
Posts: 11
Joined: Sun Jan 17, 2016 11:01 am

Re: Crazy PA and software-defined-radio

Post by Maxzor » Tue Feb 09, 2016 12:17 am

Thank you Tobias!

Have you also any input about how far the Crazyradio is from pairing with a classic 2.4GHz GFSK transmitter?

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