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The multi-passive-combiner hub can easily be scaled up to provide more channels so that
it can sustain to handle the ever-increasing traffic load. This can be achieved by using more
demultiplexers and passive combiners within the hub. The cost involved is low because
demultiplexers and passive combiners are low-cost passive components. Figure 6 shows an
example in which the multi-passive-combiner hub provides more channels than the one
shown in Figure 4 while it realizes non-uniform channel allocation for non-uniform traffic.
(a)
(b)
Figure 5. Multi-passive-combiner hub can realize non-uniform channel allocation for non-uniform
traffic. (a). First example of non-uniform channel allocation. (b). Second example of non-uniform
channel allocation.
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