New approach to a DS-CDMA-UWB system using a pseudo orthogonal code (POC)

Author:

Biteur Kada1,Benadda Belkacem1,Ayad Ahmed2

Affiliation:

1. Dept of Telecommunications, University Abou Bekr Belkaid of Tlemcen, Algeria + Information Processing and Telecommunication Laboratory (LTIT),University Tahri Mohamed, Bechar, Algeria

2. Dept of Electrical engineering, university Kasdi Merbah Ourgla, Algeria

Abstract

Ultra-Wideband Direct Sequences Code Division Multiple Access (DS-DMA) plays an important role in the case of multi-terminal multi-application communications of UWB devices. In the case of UWB systems that exploit the injection of the pulse itself directly to the antenna hence the very wide bandwidth, generation of suitable DS-CDMA codes poses a real challenge. In this paper we will describe our novel UWB transmission which uses pseudo-orthogonal time code (POC) as DS-CDMA sequences. The suggested codes are unipolar sequences with chips that may be dynamically modified to target a certain number of users or applications. Our approach bypasses the modulations schemes commonly used on UWB systems. Moreover, as perspectives to our work, it would be very interesting to realize our new approach based on an FPGA circuit.

Publisher

National Library of Serbia

Subject

General Materials Science

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