Comtech EF Data CDD-880 Uživatelský manuál stáhnout pdf (Strana 8)

Return Channel ACM

• Based on VersaFEC ACM

• Onl

roduct to su

ort ACM with E1 RAN while

yp pp

maintaining service quality

• ACM allows for automatic change in modulation and

code rate in response to changing link conditions

code

rate

response

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

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 CDD-880 Uživatelský manuál Strana 8