دانلود مقاله Forward Error Correction in Sensor Networks

Jaein Jeong and Cheng Tien Ee
Department of Electrical Engineering and Computer Science
University of California, Berkeley
May 16, 2003

Abstract
In any network, there are two basic methods to recover errorneous packets. One way is to use
Automatic Repeat Request (ARQ), and another is Forward Error Correction (FEC). Since, in sen-
sor networks, power is scarce and is primarily consumed by wireless transmission and reception,
we would prefer to use FEC rather than ARQ. In this paper we determine empirically the error
characteristics of wireless transmission signals, and from that, we implement and evaluate dierent
types of encoding schemes that are shown to be successful in reducing the error rates.

Key words: sensor networks, forward error correction, ChipCon Radio