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The authors have experimentally demonstrated a 28.7 dB power budget for simultaneous transmission of 2.5 Gbit/s/node payload data and 80 Mbit/s/node control channels using the multichannel subcarrier multiplexing (MSCM) signalling technique. The power budget is sufficient to support a 234 node MSCM-WDM network with 2.5 Gbit/s/node 10 km radius coverage and 0.25 dB/km fibre attenuation; with 0.45 dB/km attenuation, the network can support up to 93 nodes.
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Lu et al. (1995) studied this question.
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