Information exchange in wireless networks with network coding and physical-layer broadcast

Yunnan Wu, Philip A. Chou, and Sun-Yuan Kung

Abstract

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.

Details

Publication typeInproceedings
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