The first GSM phone was introduced in Finland in July 1991 which has marked the beginning of a new era of telecommunications
On 1 July 1991 it was twenty years ago made the first call to the world of GSM commercial network between the then Finnish Prime Minister Harri Holkeri and Kaarina Suonio deputy mayor of the city of Tampere.
The first GSM network was built by Siemens and Tele Nokia – Nokia Siemens Networks today. The theme of the first telephone conversation via GSM (Global System for Mobile Communications) benefits the new GSM digital technology in terms of voice quality and security. The GSM system was adopted in 1987 in Europe as the standard for digital mobile telephony.
The second generation of cellular technology allowed the data and voice traffic. The international roaming and short message service laid the foundation for the boom in the use of the phone. In the following years, the number of GSM subscribers grew exponentially well beyond expectations, more than 500 million in the first decade.
The current GSM comprises of 838 networks in 234 countries around the world with over 4.4 billion users. GSM is still growing with 1 million new users being added every day, about 12 per second.
Present at the Mobile World Congress 2012, Nokia Siemens Networks offers the potential of its Flexi multiradio Antenna System can support operators in response to traffic demand in mobile broadband. The Flexi multiradio Antenna System is based on technology Active Antenna System (AAS), one of the key elements of the architecture of Liquid net Nokia Siemens Networks. Trial conducted in Italy with Telecom, the company is validating the improved performance of the radio stations.
Telecom Italy has participated very actively in the verification and testing of the Flexi multiradio Antenna System of Nokia Siemens Networks over several trials. The main Italian operator works with Nokia Siemens Networks joint project to research and development on smart antennas since 2006 and has contributed substantially to the development of Flexi multiradio Antenna System.
Active Antenna System technology integrates the various components of radio frequency (RF), such as power amplifiers and transceivers, in the antenna dipoles. This gives rise to an extraordinary ability to “beam forming” that provides significant performance increases and high energy efficiency. In addition to increased capacity and coverage, the ACD allows for greater flexibility of implementation on the ground, a site solution more compact, lower power consumption and supports multi-technology networks.
It also eliminates the need for separate RF units which are typically linked to the power supplies of the antennas traditional. As state of Nokia Siemens engineers, operators can increase the capacity of their radio stations up to 65% and increase coverage up to 30% compared to traditional antenna solutions.