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Constant Amplitude Multiple Access Channel Coding for Impulse Radio UWB Networks  

Kim, Tong-Sok (KT Future Technology Laboratory)
Kim, Yong-Cheol (Dept. of ECE. University of Seoul)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SC / v.45, no.6, 2008 , pp. 42-47 More about this Journal
Abstract
In this article a novel constant amplitude precoding for impulse UWB system is proposed. According to IEEE 802.15.4a, impulse UWB can be used in indoor localization and sensor data transmission. Most USN(ubiquitous sensor networks) needs multiple access. However impulse UWB system has a limited capability to detect superpositioned signal induced by multiple access. To overcome this problem we have adopted the concept of CAMC(Constant Amplitude Multi-Code) deviced by Wada and Kim. The proposed system consists of systematic constant amplitude precoding and LDPC decoding. And this system shows a good BER performance in computer simulation.
Keywords
Impulse UWB; IEEE 802.15.4.a; LDPC;
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