Abstract
This paper presents the implementation of a GSM (Global System for Mobile Communications) network prototype based on SDR (Software Defined Radio) using the Linux-based OpenBTS software and the USRP (Universal Software Radio Peripheral) hardware. GSM has been chosen because it is one of the most successful standards with the most significant impact on the mobile telephony ecosystem. It has been the key to the development of subsequent generations. By integrating GSM with SDR, it is possible to implement a prototype of an experimental GSM network, which can become a testbed for future innovations and developments in SDR dynamics that seek to provide alternative mobile infrastructures to rural populations in Ecuador and around the word that they still are part of the great digital divide.
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