13 GHz Digital Radio System for Urban Areas

The new low capacity digital radio systems of the "R series" have been conceived and developed to meet the requirements of point-to-point links in urban areas. The capacities required for such systems are 2 to 8 Mbit/s for the European hierarchy and 1.5 to 6.3 Mbit/s for the USA hierarchy and are used to transmit telephone channels or data. The frequency bands used for these purpose range from 13 GHz to 23 GHz. This paper specifically describes the system operating in 12.75 - 13.25 GHz band.