scope:

The present document specifies the minimum performance parameters for a high capacity digital radio-relay system operating in frequency bands with about 30 MHz channel spacing in the 4 GHz, 6L GHz, 7 GHz, 8L GHz, 13 GHz and 15 GHz bands. The channel capacity is 1 × STM-1 on each polarization that allows to transmit up to 2 × STM-1 signals at the same frequency by using both polarizations in co-channel dual polarized (CCDP) mode of operation with cross-polar interference canceller techniques (XPIC). The present document is also applicable to 1 × STM-1 systems operating only with co-polar arrangement of about 30 MHz for which the CCDP operation with XPIC is considered a non mandatory options; for those systems the clauses relevant to XPIC operation (i.e. co-channel "internal" interference) are not applicable. These systems are intended for local high capacity links (e.g. mobile infrastructure connections) where few channels may be used by different operators) and the crowded environment could require co-polar operation on adjacent channels.