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MC-CDMA with Quadrature Spreading over Frequency Selective Fading Channels
KTH, Superseded Departments, Signals, Sensors and Systems.ORCID iD: 0000-0001-9697-9978
1997 (English)In: Conference Record / IEEE Global Telecommunications Conference, New York: IEEE , 1997, 315-319 p.Conference paper, Published paper (Refereed)
Abstract [en]

MultiCarrier CDMA (MC­CDMA) schemes re­solve the frequency selectivity in multipath fading channels  and have good spectral properties. Spreading the information  over many subcarriers adds flexibility to the system and a re­dundancy between subcarriers that can be combined nicely  with the derived frequency diversity out from the fading channel.  In this paper the performance of a MC­CDMA scheme over  frequency selective, slowly fading channels is studied analytically and by computer simulations. The MC­CDMA system  uses a BPSK modulation, quadrature (complex) spreading  codes, and a simple correlator receiver. Quadrature spread­  ing codes are used to reduce the effect of the multipath fad­ing channel and restore some of the orthogonality losses be­  tween users. The obtained results show considerable per­formance improvement compared to conventional Orthogonal  Frequency Division Multiplexing (OFDM) scheme and MC­CDMA schemes that use non­quadrature spreading. The ef­fect of frequency offsets on the system performance is also  addressed in this paper.

Place, publisher, year, edition, pages
New York: IEEE , 1997. 315-319 p.
National Category
Computer and Information Science
Research subject
SRA - ICT
Identifiers
URN: urn:nbn:se:kth:diva-28165DOI: 10.1109/GLOCOM.1997.632561ISBN: 0-7803-4198-8 (print)OAI: oai:DiVA.org:kth-28165DiVA: diva2:384206
Conference
The 1997 IEEE Global Telecommunications Mini-Conference; Phoenix, AZ, USA; 3 November 1997 through 8 November 1997
Note
QC 20110114Available from: 2011-01-07 Created: 2011-01-07 Last updated: 2011-11-29Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
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More styles
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  • de-DE
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  • nn-NO
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  • Other locale
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Output format
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