Yunnan Wu, Philip A. Chou, and Sun-Yuan Kung
The exchange of independent information between
two nodes in a wireless network can be viewed as two
unicast sessions, corresponding to information trans-
fer along one direction and the opposite direction. In
this paper we show such information exchange can
be efficiently performed by exploiting network cod-
ing and the physical-layer broadcast property offered
by the wireless medium, which improves upon con-
ventional solutions that separate the processing of
the two unicast sessions. We propose a distributed
scheme that obviates the need for synchronization and
is robust to random packet loss and delay, and so on.
The scheme is simple and incurs minor overhead.