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The introduction of physical layer network coding gives rise to the concept of turning a collision of transmissions on a wireless channel useful. In the idea of physical layer network coding, two synchronized simultaneous packet transmissions are carefully encoded such that the superimposed transmission can be decoded to produce a packet which is identical to the bitwise binary sum of the two transmitted packets.
Simple Wireless is a C++ library that provides simple wireless networking functions for Arduino boards, using many inexpensive radio modules. Simple Wireless uses the Virtual Wire library (by Mike McCauley) as the physical layer.
Transhumance is a middleware for peer-to-peer applications on mobile ad hoc networks. It provides full communication and deployment facilities (enhanced transport layer, events and groups management systems). This middleware has been tested on Nokia 770