... hyperframe [WAL-99]. Mobile Satellite Communication Networks12Figure 1.4 GSM full-rate speech coder. 1 Mobile Communication System Evolution 1.1 Historical PerspectiveThe mobile phone has proved ... system to be investigated.The evolution of mobile communications can be categorised into generations of develop-ment. Presently, we are on the verge of the third-generation (3G) of mobile systems. ... cellular mobile, but also cordless, public mobile radio, satellite and wireless-local area network (W-LAN) solutions. 2G systems are synonymous with the globalisation of mobile systems, and inMobile...