A novel approach of spreading spectrum in OFDM systems

Pingzhou Tu*, Xiaojing Huang, Eryk Dutkiewicz

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

4 Citations (Scopus)

Abstract

A method for spectrum spreading in an Orthogonal Frequency Division Multiplexing (OFDM) system is proposed in this paper, resulting in a Spread Spectrum OFDM (SS-OFDM) system suitable for ultra-wideband (UWB) applications. By modifying the IFFT module in a conventional OFDM transmitter and interleaving the modulated signal samples within an OFDM symbol, the transmitted signal spectrum is spread greatly to realize spread spectrum communications. This method of spectrum spreading is also compared with that of the Multiband OFDM (MB-OFDM) system. The SS-OFDM signal has the characteristics of a white noise, and its power spectrum density is constant within the desired bandwidth. One of the main advantages of the proposed system is that it can be used for UWB communication without the need for frequency hopping. In addition, the transmitted signal bandwidth can be selected flexibly to meet different system requirements.

Original languageEnglish
Title of host publication2006 International Symposium on Communications and Information Technologies, ISCIT
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages487-491
Number of pages5
DOIs
Publication statusPublished - 2006
Externally publishedYes
Event2006 International Symposium on Communications and Information Technologies, ISCIT - Bangkok, Thailand
Duration: 18 Oct 200620 Oct 2006

Other

Other2006 International Symposium on Communications and Information Technologies, ISCIT
CountryThailand
CityBangkok
Period18/10/0620/10/06

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