1. Arcada Polytechnic. Mobile and wireless communication systems - gsm, 2006.
http://wireless.arcada.fi/MOBWI/material/CN_1.html
.
2. 3GPP. The 3rd Generation Partnership Project (3GPP), 2014.
http://www.3gpp.org/
.
3. IEEE 802.15.1 Working Group. Ieee standard for local and metropolitan area networks – part 15.1: Wireless medium access control (mac) and physical layer (phy) specifications for wireless personal area networks (wpans).IEEE 802.15.1, IEEE Computer Society, 2005.
4. Identification cards – Contactless integrated circuit(s) cards – Proximity cards, 2000.
5. IrDA. Infrared data association.
http://www.irda.org/
, 2014.