The bandwidth of the connection between each Remote Stations and the Central Processing Systems will be ~10 Gbit/s, of which ~ 2.5 Gbit/s will be occupied by the sustained datarate resulting from the sensors.

The wide area data transport system for LOFAR will be based on digital optical fibre communication. The method by which data will be encoded and transmitted is a function of the data rate to be supported, the distance over which data are to be transported, and the nature of the fibre infrastructure (existing commercial fiber, or proprietary fiber laid by the LOFAR project).

The WAN will be implemented using 10 Gigabit Ethernet (10 GbE) technology. This is the obvious choice for distances up to ~40 km with a single transmitter/receiver pair, but will also be used for longer distances unless cheap and reliable alternatives are available (e.g. by reuse of existing infrastructure).

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