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ETSI EN 301 461
M00001017
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ETSI EN 301 461 Fixed Radio Systems; Point-to-point equipment; High capacity fixed radio systems carrying SDH signals (2 x STM-1) in frequency bands with 40 MHz channel spacing and using Co-Channel Dual Polarized (CCDP) operation
standard by European Telecommunications Standards Institute, 11/01/2002
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The present document specifies the minimum performance parameters for a high capacity digital radio-relay systemoperating in frequency bands with 40 MHz channel spacing in the 4 GHz, 5 GHz, U6 GHz and 11 GHz bands. Thechannel capacity is 1 x STM 1 on each polarization that allows to transmit up to 2 x STM 1 signals in the same RFchannel by using both polarizations in co-channel dual polarized (CCDP) mode of operation withcross-polar interference canceller techniques (XPIC).The present document is also applicable to 1 x STM-1 ACCP systems operating with co-polar arrangement of40 MHz for which the CCDP operation with XPIC is considered a non applicable option; for those systems the clausesrelevant to XPIC operation (i.e. co-channel "internal" interference) are not applicable. These systems are intended forlocal high capacity links (e.g. mobile infrastructure connections) where few channels may be used by differentoperators) and the crowded environment may require co-polar operation on adjacent channels.