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The Scientific World Journal
Volume 2014 (2014), Article ID 171875, 11 pages
Research Article

Design of Pulse Waveform for Waveform Division Multiple Access UWB Wireless Communication System

School of Electronics and Information Engineering, Harbin Institute of Technology, Harbin 150001, China

Received 31 August 2013; Accepted 23 December 2013; Published 11 February 2014

Academic Editors: M. A. Abu-Rgheff, M. Min, and J.-K. Xiao

Copyright © 2014 Zhendong Yin et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A new multiple access scheme, Waveform Division Multiple Access (WDMA) based on the orthogonal wavelet function, is presented. After studying the correlation properties of different categories of single wavelet functions, the one with the best correlation property will be chosen as the foundation for combined waveform. In the communication system, each user is assigned to different combined orthogonal waveform. Demonstrated by simulation, combined waveform is more suitable than single wavelet function to be a communication medium in WDMA system. Due to the excellent orthogonality, the bit error rate (BER) of multiuser with combined waveforms is so close to that of single user in a synchronous system. That is to say, the multiple access interference (MAI) is almost eliminated. Furthermore, even in an asynchronous system without multiuser detection after matched filters, the result is still pretty ideal and satisfactory by using the third combination mode that will be mentioned in the study.