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 (V1.1.1)
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.