Referências
- SVERZUT, J.R. - “Redes GSM, GPRS, EDGE e UMTS – Uma evolução a caminho da terceira geração (3G)”, Ed Érica, 2005;
- M Rahnema - “Overview of the GSM system and protocol architecture” - Communications Magazine, IEEE, 1993 - ieeexplore.ieee.org;
- G Brasche, B Walke – “Concepts, services, and protocols of the new GSM phase 2+ generalpacket radio service” - Communications Magazine, IEEE, 1997 - ieeexplore.ieee.org;
- J Cai, DJ Goodman - “General packet radio service in GSM” - Communications Magazine, IEEE, 1997 - ieeexplore.ieee.org;
- T Ojanpera, R Prasad – “An overview of air interface multiple access for IMT-2000/UMTS” - Communications Magazine, IEEE, 1998 - ieeexplore.ieee.org;
- http://images.google.com.br.