期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2013
卷号：48
期号：2
页码：1103-1108
出版社：Journal of Theoretical and Applied
摘要：Power consumption of nodes in a wireless sensor network (WSN) determines the life cycle of the WSN, so it is particularly important to design low-power and high-performance wireless sensor nodes in the network. Based on a simple analysis of the IEEE802.15.4 protocol specifications and comparison among the efficiencies of different physical layers, this paper illustrates the design and implementation of low-power and high-performance nodes in WSN from the perspectives of 2.4G physical layer baseband spread spectrum and O-QPSK modulation demodulation, proposes a cascade de-spreading method, and finally puts forward a modulation and demodulation scheme according to the IEEE 802.15.4 specifications and de-spreading method.
