Running A GSM Network In A Box With Raspberry Pi2 #iLovePi2 #piday #raspberrypi @Raspberry_Pi
Build a GSM network with RasPi2 ,UmTRX and Osmocom. via rs-online
While it was just about possible to use OpenBTS with a Raspberry Pi version 1, the software required some careful fine tuning and, given the compute intensive nature of such software-defined radio (SDR) applications, it was a far from practical solution and such a setup would barely support calls. However, the Raspberry Pi 2, with not only 4x ARM cores but NEON SIMD extensions — which come in very handy for digital signal processing applications — is a much better fit.
In this post we take a look at installing and running the modular Osmocom GSM network stack on a Pi 2, hooked up via Ethernet to a UmTRX dual-channel SDR transceiver which provides the radio interface. One way to think of the UmTRX is as an exceptionally fast sound card, and it’s important to note that while it does perform some signal processing, this mostly takes place on the Pi, along with the upper layers of the stack.
Each Friday is PiDay here at Adafruit! Be sure to check out our posts, tutorials and new Raspberry Pi related products. Adafruit has the largest and best selection of Raspberry Pi accessories and all the code & tutorials to get you up and running in no time!
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.