23 October 2017
Encryption at the physical layer has the advantage of being the last step before your data is transmitted across a fiber optic network, so encryption can protect all the applications above the optical layer. There’s been a lot of interest in this topic, with most of the major long distance optical network equipment providers offering some form of protection.
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By Light Counting | Posted: 5 October 2017
In the past several years, LTE networks have been upgraded using additional frequency bands, carrier aggregation, and LTE-A, and small cells have been added within macrocell coverage areas, driving up fronthaul bandwidth requirements to the point where now many operators and equipment suppliers have standardized on 10Gb/s-capable multi-rate transceivers for all their fronthaul needs, since they can meet the majority of different transport speed requirements with one device, while reducing the complexity of specific site designs and spares inventory. Many operators, especially those leasing their fronthaul fiber, have also deployed WDM systems in their fronthaul networks, as shown below. A typical fronthaul network incorporating WDM is shown below.
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