Performance of asynchronous multicarrier CDMA multiuser receiver over frequency selective fading channels

  1. Lookup NU author(s)
  2. Rui Liu
  3. Dr Graeme Chester
  4. Professor Bayan Sharif
  5. Yi Yi
Author(s)Sharif BS; Chester EG; Yi SJ; Liu R
Editor(s)
Publication type Conference Proceedings (inc. Abstract)
Conference Name14th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications
Conference LocationBejing, China
Year of Conference2003
Date7-10 September 2003
Volume2
Pages1536-1540
ISBN0780378229
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An asynchronous multicarrier code division multiple access (MC-CDMA) scheme over frequency selective multipath Rayleigh fading channels for the reverse link of a mobile communication system is investigated when the delay spread is in excess of a symbol interval. An architecture of a centralized decision feedback equalizer (CDFE) based on the minimum mean-square-error (MMSE) criterion is suggested to reduce both inter-symbol-interference (ISI) and multiple access interference (MAI) due to the multi-path propagation, and the MAI due to the effect of the reverse asynchronous reception mode at the base station. The receiver architecture is for multi-user detection (MUD) consisting of a multiple-layer feed-forward filter (ML-FFF) and a centralized feed back filter (CFBF). Results indicate that an enhancement in capacity and good interference resistance are obtained by the proposed multi-user detection scheme over the structure without CFBF (NCDFE), which only uses ML-FFF and FBF. Additionally, it is demonstrated that the structure performs multi-path energy Rake combining. (6 References).
PublisherIEEE
URLhttp://dx.doi.org/10.1109/PIMRC.2003.1260370
DOI10.1109/PIMRC.2003.1260370
NotesKe G NiuZ 2. Piscataway, NJ, USA. 14th IEEE 2003 International Symposium on Personal, Indoor and Mobile Radio Communications. Proceedings. Beijing, China. IEEE Commun. Soc. 7-10 Sept. 2003.
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