Wideband spread spectrum modulation system for ubiquitous communication services

Authors:
Saki Yatano;Yumi Takizawa;Atsushi Fukasawa
Affiliations:
Department of Statistical Science, The Graduate University for Advanced Studies;Institute of Statistical Mathematics, Minato-ku, Tokyo, Japan;Institute of Statistical Mathematics, Minato-ku, Tokyo, Japan
Venue:
AIC'07 Proceedings of the 7th Conference on 7th WSEAS International Conference on Applied Informatics and Communications - Volume 7
Year:
2007

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Abstract

A wideband spread spectrum (SS) system is proposed in this paper for a radio air interface scheme of a ubiquitous network system. Ubiquitous network system is highly reactive to provide sufficient information for anybody, anytime, and anywhere for daily lives, business, and scientific utilities. This radio system is composed of wideband modulation, coherent demodulation, advanced synchronization based on a matched filter system, and interference canceller for enhanced capacity. In this paper, concept of ubiquitous communication network is clarified. A wideband transmission scheme of spread spectrum (SS) modulation with code division multiple access (CDMA) scheme is proposed for radio air interface. Prototype hardware was implemented and validated for this scheme.