SSH EN 301 387 V1.1.1:1999

Sisteme Radio Fikse; Pajisje pikë-pikë; Hierarkia Dixhitale Pleziokrone (PDH); Sistemet radio dixhitale me kapacitet të ulët dhe të mesëm që punojnë në bandat e frekuencave 48,5 GHz në 50.2 GHz

Fixed Radio Systems; Point-to-point equipment; Plesiochronous Digital Hierarchy (PDH); Low and medium capacity digital radio systems operating in the frequency band 48,5 GHz to 50,2 GHz

Scope

The present document covers the minimum performance requirements for terrestrial fixed services radiocommunications equipment, as given below, in the frequency band 48,5 GHz to 50,2 GHz. The present document specifies the performance criteria for digital signals. As the maximum transmissible rate in a given bandwidth depends on system spectral efficiency, different classes are defined:-class 1: equipment based on a minimum 2-level modulation scheme (e.g. 2-FSK or equivalent); class 2: equipment based on a minimum 4-level modulation scheme (e.g. 4-FSK, 4-PSK, or equivalent). Safety aspects are outside the scope of the present document.