摘要：
针对传统LT码编码效率不高、时延长且译码率低等问题，设计一种应用于无线传感器网络(WSN)的不定帧长LT码系统，对原始数据进行拆分编译码，从而满足WSN节点跟踪与数据传输要求的准确性、高效性以及不等差错保护。实验结果证明，该系统能提升WSN的编码率和译码率，提高数据中心的数据恢复率，增强LT码在实际系统应用中的可行性。
关键词:
无线传感器网络,
不定帧长LT码,
编码率,
译码率,
极限理论
Abstract:
Aiming at traditional LT code has the drawbacks of coding efficiency is not high, decoding time is long and decoding probability is low, this paper designs a system of Variable Frame Length(VFL) LT code in Wireless Sensor Network(WSN), takes the measure of frame length design, splits the source data and encodes them separately to meet requirement of accuracy and efficiency of data in networks and unequal protection requirements. Experimental results show that VFLLT system can effectively improve the coding efficiency, the decoding and recovery probability in WSN, and enhance the feasibility of LT code in actual system.
Key words:
Wireless Sensor Network(WSN),
Variable Frame Length Luby Transform(VFLLT) code,
encoding rate,
decoding rate,
limit theory
中图分类号:
赵旦峰, 钱晋希, 李炜. 无线传感器网络中不定帧长LT码系统研究[J]. 计算机工程, 2011, 37(10): 73-75.
DIAO Dan-Feng, JIAN Jin-Xi, LI Wei. Research of Variable Frame Length Luby Transform Code System in Wireless Sensor Network[J]. Computer Engineering, 2011, 37(10): 73-75.