Comtech EF Data CDM-800 Manuel d'utilisateur télécharger pdf (Page 18)

Return Channel ACM

• Based on VersaFEC ACM

• Only product to support ACM with E1 RAN while

maintaining service quality

• ACM allows for automatic change in modulation and

code rate in response to changing link conditions

– Converts link margin into increased capacity

 Most of the year, the link operates at significantly increased throughput

 For the worst few hours of the year, the link may be available with lower

throughput

– Optimizes channel coding and modulation on a frame-by-

frame basis

– Allows each remote to operate optimally subject to antenna

size, location within the footprint, rain fade and other

impairments

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Comtech EF Data CDM-800 Manuel d'utilisateur Page 18