Coding & modulation techniques in ERMES

The term ERMES stands for European Radio Message System. It was introduced by the European Telecommunication Standards Institute (ETSI) as a pan-European paging system. Both the equipment specifications and frequency band are harmonized. The only difference between countries is an identifier within the transmissions. The purpose of this artcile is to examine the technical characteristics - especially the coding and modulation operations. Any comments are purely personal.